diff --git a/x-pack/legacy/plugins/beats_management/public/lib/adapters/framework/kibana_framework_adapter.ts b/x-pack/legacy/plugins/beats_management/public/lib/adapters/framework/kibana_framework_adapter.ts
index 79ffe58d419bd..b2cfd826e6207 100644
--- a/x-pack/legacy/plugins/beats_management/public/lib/adapters/framework/kibana_framework_adapter.ts
+++ b/x-pack/legacy/plugins/beats_management/public/lib/adapters/framework/kibana_framework_adapter.ts
@@ -11,6 +11,8 @@ import * as React from 'react';
 import * as ReactDOM from 'react-dom';
 import { UIRoutes } from 'ui/routes';
 import { isLeft } from 'fp-ts/lib/Either';
+import { npSetup } from 'ui/new_platform';
+import { SecurityPluginSetup } from '../../../../../../../plugins/security/public';
 import { BufferedKibanaServiceCall, KibanaAdapterServiceRefs, KibanaUIConfig } from '../../types';
 import {
   FrameworkAdapter,
@@ -58,7 +60,7 @@ export class KibanaFrameworkAdapter implements FrameworkAdapter {
   };
 
   public async waitUntilFrameworkReady(): Promise<void> {
-    const $injector = await this.onKibanaReady();
+    await this.onKibanaReady();
     const xpackInfo: any = this.xpackInfoService;
     let xpackInfoUnpacked: FrameworkInfo;
 
@@ -95,8 +97,10 @@ export class KibanaFrameworkAdapter implements FrameworkAdapter {
     }
     this.xpackInfo = xpackInfoUnpacked;
 
+    const securitySetup = ((npSetup.plugins as unknown) as { security?: SecurityPluginSetup })
+      .security;
     try {
-      this.shieldUser = await $injector.get('ShieldUser').getCurrent().$promise;
+      this.shieldUser = (await securitySetup?.authc.getCurrentUser()) || null;
       const assertUser = RuntimeFrameworkUser.decode(this.shieldUser);
 
       if (isLeft(assertUser)) {
diff --git a/x-pack/legacy/plugins/logstash/public/sections/pipeline_edit/components/pipeline_edit/pipeline_edit.js b/x-pack/legacy/plugins/logstash/public/sections/pipeline_edit/components/pipeline_edit/pipeline_edit.js
index aa7f88a62397c..83446278fdeca 100755
--- a/x-pack/legacy/plugins/logstash/public/sections/pipeline_edit/components/pipeline_edit/pipeline_edit.js
+++ b/x-pack/legacy/plugins/logstash/public/sections/pipeline_edit/components/pipeline_edit/pipeline_edit.js
@@ -8,6 +8,7 @@ import React from 'react';
 import { render } from 'react-dom';
 import { isEmpty } from 'lodash';
 import { uiModules } from 'ui/modules';
+import { npSetup } from 'ui/new_platform';
 import { toastNotifications } from 'ui/notify';
 import { I18nContext } from 'ui/i18n';
 import { PipelineEditor } from '../../../../components/pipeline_editor';
@@ -21,7 +22,6 @@ app.directive('pipelineEdit', function($injector) {
   const pipelineService = $injector.get('pipelineService');
   const licenseService = $injector.get('logstashLicenseService');
   const kbnUrl = $injector.get('kbnUrl');
-  const shieldUser = $injector.get('ShieldUser');
   const $route = $injector.get('$route');
 
   return {
@@ -32,7 +32,7 @@ app.directive('pipelineEdit', function($injector) {
         scope.$evalAsync(kbnUrl.change(`/management/logstash/pipelines/${id}/edit`));
 
       const userResource = logstashSecurity.isSecurityEnabled()
-        ? await shieldUser.getCurrent().$promise
+        ? await npSetup.plugins.security.authc.getCurrentUser()
         : null;
 
       render(
diff --git a/x-pack/legacy/plugins/security/index.js b/x-pack/legacy/plugins/security/index.js
index 6ee8b5f8b2b10..bc403b803b8df 100644
--- a/x-pack/legacy/plugins/security/index.js
+++ b/x-pack/legacy/plugins/security/index.js
@@ -28,17 +28,10 @@ export const security = kibana =>
         enabled: Joi.boolean().default(true),
         cookieName: HANDLED_IN_NEW_PLATFORM,
         encryptionKey: HANDLED_IN_NEW_PLATFORM,
-        session: Joi.object({
-          idleTimeout: HANDLED_IN_NEW_PLATFORM,
-          lifespan: HANDLED_IN_NEW_PLATFORM,
-        }).default(),
+        session: HANDLED_IN_NEW_PLATFORM,
         secureCookies: HANDLED_IN_NEW_PLATFORM,
         loginAssistanceMessage: HANDLED_IN_NEW_PLATFORM,
-        authorization: Joi.object({
-          legacyFallback: Joi.object({
-            enabled: Joi.boolean().default(true), // deprecated
-          }).default(),
-        }).default(),
+        authorization: HANDLED_IN_NEW_PLATFORM,
         audit: Joi.object({
           enabled: Joi.boolean().default(false),
         }).default(),
@@ -46,13 +39,6 @@ export const security = kibana =>
       }).default();
     },
 
-    deprecations: function({ rename, unused }) {
-      return [
-        unused('authorization.legacyFallback.enabled'),
-        rename('sessionTimeout', 'session.idleTimeout'),
-      ];
-    },
-
     uiExports: {
       chromeNavControls: [],
       managementSections: ['plugins/security/views/management'],
diff --git a/x-pack/legacy/plugins/security/public/lib/api.ts b/x-pack/legacy/plugins/security/public/lib/api.ts
index ffa08ca44f376..c5c6994bf4be3 100644
--- a/x-pack/legacy/plugins/security/public/lib/api.ts
+++ b/x-pack/legacy/plugins/security/public/lib/api.ts
@@ -5,16 +5,12 @@
  */
 
 import { kfetch } from 'ui/kfetch';
-import { AuthenticatedUser, Role, User, EditUser } from '../../common/model';
+import { Role, User, EditUser } from '../../common/model';
 
 const usersUrl = '/internal/security/users';
 const rolesUrl = '/api/security/role';
 
 export class UserAPIClient {
-  public async getCurrentUser(): Promise<AuthenticatedUser> {
-    return await kfetch({ pathname: `/internal/security/me` });
-  }
-
   public async getUsers(): Promise<User[]> {
     return await kfetch({ pathname: usersUrl });
   }
diff --git a/x-pack/legacy/plugins/security/public/services/shield_user.js b/x-pack/legacy/plugins/security/public/services/shield_user.js
deleted file mode 100644
index 14a79f267ca75..0000000000000
--- a/x-pack/legacy/plugins/security/public/services/shield_user.js
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License;
- * you may not use this file except in compliance with the Elastic License.
- */
-
-import 'angular-resource';
-import angular from 'angular';
-import { uiModules } from 'ui/modules';
-
-const module = uiModules.get('security', ['ngResource']);
-module.service('ShieldUser', ($resource, chrome) => {
-  const baseUrl = chrome.addBasePath('/internal/security/users/:username');
-  const ShieldUser = $resource(
-    baseUrl,
-    {
-      username: '@username',
-    },
-    {
-      changePassword: {
-        method: 'POST',
-        url: `${baseUrl}/password`,
-        transformRequest: ({ password, newPassword }) => angular.toJson({ password, newPassword }),
-      },
-      getCurrent: {
-        method: 'GET',
-        url: chrome.addBasePath('/internal/security/me'),
-      },
-    }
-  );
-
-  return ShieldUser;
-});
diff --git a/x-pack/legacy/plugins/security/public/views/account/account.js b/x-pack/legacy/plugins/security/public/views/account/account.js
index db971bd97eab7..70a7b8dce727e 100644
--- a/x-pack/legacy/plugins/security/public/views/account/account.js
+++ b/x-pack/legacy/plugins/security/public/views/account/account.js
@@ -6,22 +6,13 @@
 
 import routes from 'ui/routes';
 import template from './account.html';
-import '../../services/shield_user';
 import { i18n } from '@kbn/i18n';
 import { I18nContext } from 'ui/i18n';
+import { npSetup } from 'ui/new_platform';
 import { AccountManagementPage } from './components';
 import React from 'react';
 import { render, unmountComponentAtNode } from 'react-dom';
 
-const renderReact = (elem, user) => {
-  render(
-    <I18nContext>
-      <AccountManagementPage user={user} />
-    </I18nContext>,
-    elem
-  );
-};
-
 routes.when('/account', {
   template,
   k7Breadcrumbs: () => [
@@ -31,13 +22,8 @@ routes.when('/account', {
       }),
     },
   ],
-  resolve: {
-    user(ShieldUser) {
-      return ShieldUser.getCurrent().$promise;
-    },
-  },
   controllerAs: 'accountController',
-  controller($scope, $route) {
+  controller($scope) {
     $scope.$on('$destroy', () => {
       const elem = document.getElementById('userProfileReactRoot');
       if (elem) {
@@ -45,8 +31,12 @@ routes.when('/account', {
       }
     });
     $scope.$$postDigest(() => {
-      const elem = document.getElementById('userProfileReactRoot');
-      renderReact(elem, $route.current.locals.user);
+      render(
+        <I18nContext>
+          <AccountManagementPage securitySetup={npSetup.plugins.security} />
+        </I18nContext>,
+        document.getElementById('userProfileReactRoot')
+      );
     });
   },
 });
diff --git a/x-pack/legacy/plugins/security/public/views/account/components/account_management_page.test.tsx b/x-pack/legacy/plugins/security/public/views/account/components/account_management_page.test.tsx
index 176b05f455439..366842e58e9e4 100644
--- a/x-pack/legacy/plugins/security/public/views/account/components/account_management_page.test.tsx
+++ b/x-pack/legacy/plugins/security/public/views/account/components/account_management_page.test.tsx
@@ -4,8 +4,11 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 import React from 'react';
-import { mountWithIntl } from 'test_utils/enzyme_helpers';
+import { act } from '@testing-library/react';
+import { mountWithIntl, nextTick } from 'test_utils/enzyme_helpers';
+import { securityMock } from '../../../../../../../plugins/security/public/mocks';
 import { AccountManagementPage } from './account_management_page';
+import { AuthenticatedUser } from '../../../../common/model';
 
 jest.mock('ui/kfetch');
 
@@ -32,10 +35,24 @@ const createUser = ({ withFullName = true, withEmail = true, realm = 'native' }:
   };
 };
 
+function getSecuritySetupMock({ currentUser }: { currentUser: AuthenticatedUser }) {
+  const securitySetupMock = securityMock.createSetup();
+  securitySetupMock.authc.getCurrentUser.mockResolvedValue(currentUser);
+  return securitySetupMock;
+}
+
 describe('<AccountManagementPage>', () => {
-  it(`displays users full name, username, and email address`, () => {
+  it(`displays users full name, username, and email address`, async () => {
     const user = createUser();
-    const wrapper = mountWithIntl(<AccountManagementPage user={user} />);
+    const wrapper = mountWithIntl(
+      <AccountManagementPage securitySetup={getSecuritySetupMock({ currentUser: user })} />
+    );
+
+    await act(async () => {
+      await nextTick();
+      wrapper.update();
+    });
+
     expect(wrapper.find('EuiText[data-test-subj="userDisplayName"]').text()).toEqual(
       user.full_name
     );
@@ -43,28 +60,60 @@ describe('<AccountManagementPage>', () => {
     expect(wrapper.find('[data-test-subj="email"]').text()).toEqual(user.email);
   });
 
-  it(`displays username when full_name is not provided`, () => {
+  it(`displays username when full_name is not provided`, async () => {
     const user = createUser({ withFullName: false });
-    const wrapper = mountWithIntl(<AccountManagementPage user={user} />);
+    const wrapper = mountWithIntl(
+      <AccountManagementPage securitySetup={getSecuritySetupMock({ currentUser: user })} />
+    );
+
+    await act(async () => {
+      await nextTick();
+      wrapper.update();
+    });
+
     expect(wrapper.find('EuiText[data-test-subj="userDisplayName"]').text()).toEqual(user.username);
   });
 
-  it(`displays a placeholder when no email address is provided`, () => {
+  it(`displays a placeholder when no email address is provided`, async () => {
     const user = createUser({ withEmail: false });
-    const wrapper = mountWithIntl(<AccountManagementPage user={user} />);
+    const wrapper = mountWithIntl(
+      <AccountManagementPage securitySetup={getSecuritySetupMock({ currentUser: user })} />
+    );
+
+    await act(async () => {
+      await nextTick();
+      wrapper.update();
+    });
+
     expect(wrapper.find('[data-test-subj="email"]').text()).toEqual('no email address');
   });
 
-  it(`displays change password form for users in the native realm`, () => {
+  it(`displays change password form for users in the native realm`, async () => {
     const user = createUser();
-    const wrapper = mountWithIntl(<AccountManagementPage user={user} />);
+    const wrapper = mountWithIntl(
+      <AccountManagementPage securitySetup={getSecuritySetupMock({ currentUser: user })} />
+    );
+
+    await act(async () => {
+      await nextTick();
+      wrapper.update();
+    });
+
     expect(wrapper.find('EuiFieldText[data-test-subj="currentPassword"]')).toHaveLength(1);
     expect(wrapper.find('EuiFieldText[data-test-subj="newPassword"]')).toHaveLength(1);
   });
 
-  it(`does not display change password form for users in the saml realm`, () => {
+  it(`does not display change password form for users in the saml realm`, async () => {
     const user = createUser({ realm: 'saml' });
-    const wrapper = mountWithIntl(<AccountManagementPage user={user} />);
+    const wrapper = mountWithIntl(
+      <AccountManagementPage securitySetup={getSecuritySetupMock({ currentUser: user })} />
+    );
+
+    await act(async () => {
+      await nextTick();
+      wrapper.update();
+    });
+
     expect(wrapper.find('EuiFieldText[data-test-subj="currentPassword"]')).toHaveLength(0);
     expect(wrapper.find('EuiFieldText[data-test-subj="newPassword"]')).toHaveLength(0);
   });
diff --git a/x-pack/legacy/plugins/security/public/views/account/components/account_management_page.tsx b/x-pack/legacy/plugins/security/public/views/account/components/account_management_page.tsx
index 2ed057ad73a12..6abee73e0b353 100644
--- a/x-pack/legacy/plugins/security/public/views/account/components/account_management_page.tsx
+++ b/x-pack/legacy/plugins/security/public/views/account/components/account_management_page.tsx
@@ -4,29 +4,41 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 import { EuiPage, EuiPageBody, EuiPanel, EuiSpacer, EuiText } from '@elastic/eui';
-import React from 'react';
+import React, { useEffect, useState } from 'react';
+import { SecurityPluginSetup } from '../../../../../../../plugins/security/public';
 import { getUserDisplayName, AuthenticatedUser } from '../../../../common/model';
 import { ChangePassword } from './change_password';
 import { PersonalInfo } from './personal_info';
 
 interface Props {
-  user: AuthenticatedUser;
+  securitySetup: SecurityPluginSetup;
 }
 
-export const AccountManagementPage: React.FC<Props> = props => (
-  <EuiPage>
-    <EuiPageBody restrictWidth>
-      <EuiPanel>
-        <EuiText data-test-subj={'userDisplayName'}>
-          <h1>{getUserDisplayName(props.user)}</h1>
-        </EuiText>
+export const AccountManagementPage = (props: Props) => {
+  const [currentUser, setCurrentUser] = useState<AuthenticatedUser | null>(null);
+  useEffect(() => {
+    props.securitySetup.authc.getCurrentUser().then(setCurrentUser);
+  }, [props]);
 
-        <EuiSpacer size="xl" />
+  if (!currentUser) {
+    return null;
+  }
 
-        <PersonalInfo user={props.user} />
+  return (
+    <EuiPage>
+      <EuiPageBody restrictWidth>
+        <EuiPanel>
+          <EuiText data-test-subj={'userDisplayName'}>
+            <h1>{getUserDisplayName(currentUser)}</h1>
+          </EuiText>
 
-        <ChangePassword user={props.user} />
-      </EuiPanel>
-    </EuiPageBody>
-  </EuiPage>
-);
+          <EuiSpacer size="xl" />
+
+          <PersonalInfo user={currentUser} />
+
+          <ChangePassword user={currentUser} />
+        </EuiPanel>
+      </EuiPageBody>
+    </EuiPage>
+  );
+};
diff --git a/x-pack/legacy/plugins/security/public/views/management/edit_role/index.js b/x-pack/legacy/plugins/security/public/views/management/edit_role/index.js
index 09c612526918f..27c9beb4ba828 100644
--- a/x-pack/legacy/plugins/security/public/views/management/edit_role/index.js
+++ b/x-pack/legacy/plugins/security/public/views/management/edit_role/index.js
@@ -11,10 +11,10 @@ import { kfetch } from 'ui/kfetch';
 import { fatalError, toastNotifications } from 'ui/notify';
 import { npStart } from 'ui/new_platform';
 import template from 'plugins/security/views/management/edit_role/edit_role.html';
-import 'plugins/security/services/shield_user';
 import 'plugins/security/services/shield_role';
 import 'plugins/security/services/shield_indices';
 import { xpackInfo } from 'plugins/xpack_main/services/xpack_info';
+import { UserAPIClient } from '../../../lib/api';
 import { ROLES_PATH, CLONE_ROLES_PATH, EDIT_ROLES_PATH } from '../management_urls';
 import { getEditRoleBreadcrumbs, getCreateRoleBreadcrumbs } from '../breadcrumbs';
 
@@ -69,9 +69,8 @@ const routeDefinition = action => ({
 
       return role.then(res => res.toJSON());
     },
-    users(ShieldUser) {
-      // $promise is used here because the result is an ngResource, not a promise itself
-      return ShieldUser.query().$promise.then(users => _.map(users, 'username'));
+    users() {
+      return new UserAPIClient().getUsers().then(users => _.map(users, 'username'));
     },
     indexPatterns() {
       return npStart.plugins.data.indexPatterns.getTitles();
diff --git a/x-pack/legacy/plugins/security/public/views/management/edit_user/components/edit_user_page.test.tsx b/x-pack/legacy/plugins/security/public/views/management/edit_user/components/edit_user_page.test.tsx
index 5c71d0da3954a..639646ce48e22 100644
--- a/x-pack/legacy/plugins/security/public/views/management/edit_user/components/edit_user_page.test.tsx
+++ b/x-pack/legacy/plugins/security/public/views/management/edit_user/components/edit_user_page.test.tsx
@@ -4,38 +4,42 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
-import { mountWithIntl } from 'test_utils/enzyme_helpers';
+import { act } from '@testing-library/react';
+import { mountWithIntl, nextTick } from 'test_utils/enzyme_helpers';
 import { EditUserPage } from './edit_user_page';
 import React from 'react';
+import { securityMock } from '../../../../../../../../plugins/security/public/mocks';
 import { UserAPIClient } from '../../../../lib/api';
 import { User, Role } from '../../../../../common/model';
 import { ReactWrapper } from 'enzyme';
+import { mockAuthenticatedUser } from '../../../../../../../../plugins/security/common/model/authenticated_user.mock';
 
 jest.mock('ui/kfetch');
 
-const buildClient = () => {
-  const apiClient = new UserAPIClient();
+const createUser = (username: string) => {
+  const user: User = {
+    username,
+    full_name: 'my full name',
+    email: 'foo@bar.com',
+    roles: ['idk', 'something'],
+    enabled: true,
+  };
 
-  const createUser = (username: string) => {
-    const user: User = {
-      username,
-      full_name: 'my full name',
-      email: 'foo@bar.com',
-      roles: ['idk', 'something'],
-      enabled: true,
+  if (username === 'reserved_user') {
+    user.metadata = {
+      _reserved: true,
     };
+  }
 
-    if (username === 'reserved_user') {
-      user.metadata = {
-        _reserved: true,
-      };
-    }
+  return user;
+};
 
-    return Promise.resolve(user);
-  };
+const buildClient = () => {
+  const apiClient = new UserAPIClient();
 
-  apiClient.getUser = jest.fn().mockImplementation(createUser);
-  apiClient.getCurrentUser = jest.fn().mockImplementation(() => createUser('current_user'));
+  apiClient.getUser = jest
+    .fn()
+    .mockImplementation(async (username: string) => createUser(username));
 
   apiClient.getRoles = jest.fn().mockImplementation(() => {
     return Promise.resolve([
@@ -63,6 +67,14 @@ const buildClient = () => {
   return apiClient;
 };
 
+function buildSecuritySetup() {
+  const securitySetupMock = securityMock.createSetup();
+  securitySetupMock.authc.getCurrentUser.mockResolvedValue(
+    mockAuthenticatedUser(createUser('current_user'))
+  );
+  return securitySetupMock;
+}
+
 function expectSaveButton(wrapper: ReactWrapper<any, any>) {
   expect(wrapper.find('EuiButton[data-test-subj="userFormSaveButton"]')).toHaveLength(1);
 }
@@ -74,10 +86,12 @@ function expectMissingSaveButton(wrapper: ReactWrapper<any, any>) {
 describe('EditUserPage', () => {
   it('allows reserved users to be viewed', async () => {
     const apiClient = buildClient();
+    const securitySetup = buildSecuritySetup();
     const wrapper = mountWithIntl(
       <EditUserPage.WrappedComponent
         username={'reserved_user'}
         apiClient={apiClient}
+        securitySetup={securitySetup}
         changeUrl={path => path}
         intl={null as any}
       />
@@ -86,17 +100,19 @@ describe('EditUserPage', () => {
     await waitForRender(wrapper);
 
     expect(apiClient.getUser).toBeCalledTimes(1);
-    expect(apiClient.getCurrentUser).toBeCalledTimes(1);
+    expect(securitySetup.authc.getCurrentUser).toBeCalledTimes(1);
 
     expectMissingSaveButton(wrapper);
   });
 
   it('allows new users to be created', async () => {
     const apiClient = buildClient();
+    const securitySetup = buildSecuritySetup();
     const wrapper = mountWithIntl(
       <EditUserPage.WrappedComponent
         username={''}
         apiClient={apiClient}
+        securitySetup={securitySetup}
         changeUrl={path => path}
         intl={null as any}
       />
@@ -105,17 +121,19 @@ describe('EditUserPage', () => {
     await waitForRender(wrapper);
 
     expect(apiClient.getUser).toBeCalledTimes(0);
-    expect(apiClient.getCurrentUser).toBeCalledTimes(0);
+    expect(securitySetup.authc.getCurrentUser).toBeCalledTimes(0);
 
     expectSaveButton(wrapper);
   });
 
   it('allows existing users to be edited', async () => {
     const apiClient = buildClient();
+    const securitySetup = buildSecuritySetup();
     const wrapper = mountWithIntl(
       <EditUserPage.WrappedComponent
         username={'existing_user'}
         apiClient={apiClient}
+        securitySetup={securitySetup}
         changeUrl={path => path}
         intl={null as any}
       />
@@ -124,16 +142,15 @@ describe('EditUserPage', () => {
     await waitForRender(wrapper);
 
     expect(apiClient.getUser).toBeCalledTimes(1);
-    expect(apiClient.getCurrentUser).toBeCalledTimes(1);
+    expect(securitySetup.authc.getCurrentUser).toBeCalledTimes(1);
 
     expectSaveButton(wrapper);
   });
 });
 
 async function waitForRender(wrapper: ReactWrapper<any, any>) {
-  await Promise.resolve();
-  await Promise.resolve();
-  await Promise.resolve();
-  await Promise.resolve();
-  wrapper.update();
+  await act(async () => {
+    await nextTick();
+    wrapper.update();
+  });
 }
diff --git a/x-pack/legacy/plugins/security/public/views/management/edit_user/components/edit_user_page.tsx b/x-pack/legacy/plugins/security/public/views/management/edit_user/components/edit_user_page.tsx
index 91f5f048adc6d..bbffe07485f8d 100644
--- a/x-pack/legacy/plugins/security/public/views/management/edit_user/components/edit_user_page.tsx
+++ b/x-pack/legacy/plugins/security/public/views/management/edit_user/components/edit_user_page.tsx
@@ -28,6 +28,7 @@ import {
 } from '@elastic/eui';
 import { toastNotifications } from 'ui/notify';
 import { FormattedMessage, injectI18n, InjectedIntl } from '@kbn/i18n/react';
+import { SecurityPluginSetup } from '../../../../../../../../plugins/security/public';
 import { UserValidator, UserValidationResult } from '../../../../lib/validate_user';
 import { User, EditUser, Role } from '../../../../../common/model';
 import { USERS_PATH } from '../../../../views/management/management_urls';
@@ -40,6 +41,7 @@ interface Props {
   intl: InjectedIntl;
   changeUrl: (path: string) => void;
   apiClient: UserAPIClient;
+  securitySetup: SecurityPluginSetup;
 }
 
 interface State {
@@ -82,7 +84,7 @@ class EditUserPageUI extends Component<Props, State> {
   }
 
   public async componentDidMount() {
-    const { username, apiClient } = this.props;
+    const { username, apiClient, securitySetup } = this.props;
     let { user, currentUser } = this.state;
     if (username) {
       try {
@@ -91,7 +93,7 @@ class EditUserPageUI extends Component<Props, State> {
           password: '',
           confirmPassword: '',
         };
-        currentUser = await apiClient.getCurrentUser();
+        currentUser = await securitySetup.authc.getCurrentUser();
       } catch (err) {
         toastNotifications.addDanger({
           title: this.props.intl.formatMessage({
diff --git a/x-pack/legacy/plugins/security/public/views/management/edit_user/edit_user.js b/x-pack/legacy/plugins/security/public/views/management/edit_user/edit_user.js
index bd9d6f2b1ca35..ab218022c6ee6 100644
--- a/x-pack/legacy/plugins/security/public/views/management/edit_user/edit_user.js
+++ b/x-pack/legacy/plugins/security/public/views/management/edit_user/edit_user.js
@@ -7,7 +7,6 @@ import routes from 'ui/routes';
 import template from 'plugins/security/views/management/edit_user/edit_user.html';
 import 'angular-resource';
 import 'ui/angular_ui_select';
-import 'plugins/security/services/shield_user';
 import 'plugins/security/services/shield_role';
 import { EDIT_USERS_PATH } from '../management_urls';
 import { EditUserPage } from './components';
@@ -15,12 +14,18 @@ import { UserAPIClient } from '../../../lib/api';
 import React from 'react';
 import { render, unmountComponentAtNode } from 'react-dom';
 import { I18nContext } from 'ui/i18n';
+import { npSetup } from 'ui/new_platform';
 import { getEditUserBreadcrumbs, getCreateUserBreadcrumbs } from '../breadcrumbs';
 
 const renderReact = (elem, changeUrl, username) => {
   render(
     <I18nContext>
-      <EditUserPage changeUrl={changeUrl} username={username} apiClient={new UserAPIClient()} />
+      <EditUserPage
+        changeUrl={changeUrl}
+        username={username}
+        apiClient={new UserAPIClient()}
+        securitySetup={npSetup.plugins.security}
+      />
     </I18nContext>,
     elem
   );
diff --git a/x-pack/legacy/plugins/security/public/views/management/management.js b/x-pack/legacy/plugins/security/public/views/management/management.js
index db2175e91c5de..59da63abbb83f 100644
--- a/x-pack/legacy/plugins/security/public/views/management/management.js
+++ b/x-pack/legacy/plugins/security/public/views/management/management.js
@@ -13,10 +13,10 @@ import 'plugins/security/views/management/edit_user/edit_user';
 import 'plugins/security/views/management/edit_role/index';
 import routes from 'ui/routes';
 import { xpackInfo } from 'plugins/xpack_main/services/xpack_info';
-import '../../services/shield_user';
 import { ROLES_PATH, USERS_PATH, API_KEYS_PATH } from './management_urls';
 
 import { management } from 'ui/management';
+import { npSetup } from 'ui/new_platform';
 import { i18n } from '@kbn/i18n';
 import { toastNotifications } from 'ui/notify';
 
@@ -36,7 +36,7 @@ routes
   })
   .defaults(/\/management/, {
     resolve: {
-      securityManagementSection: function(ShieldUser) {
+      securityManagementSection: function() {
         const showSecurityLinks = xpackInfo.get('features.security.showLinks');
 
         function deregisterSecurity() {
@@ -93,12 +93,11 @@ routes
         if (!showSecurityLinks) {
           deregisterSecurity();
         } else {
-          // getCurrent will reject if there is no authenticated user, so we prevent them from seeing the security
-          // management screens
-          //
-          // $promise is used here because the result is an ngResource, not a promise itself
-          return ShieldUser.getCurrent()
-            .$promise.then(ensureSecurityRegistered)
+          // getCurrentUser will reject if there is no authenticated user, so we prevent them from
+          // seeing the security management screens.
+          return npSetup.plugins.security.authc
+            .getCurrentUser()
+            .then(ensureSecurityRegistered)
             .catch(deregisterSecurity);
         }
       },
diff --git a/x-pack/legacy/plugins/security/public/views/management/users_grid/users.js b/x-pack/legacy/plugins/security/public/views/management/users_grid/users.js
index a7115f449ebfd..8d4e0526251d7 100644
--- a/x-pack/legacy/plugins/security/public/views/management/users_grid/users.js
+++ b/x-pack/legacy/plugins/security/public/views/management/users_grid/users.js
@@ -8,7 +8,6 @@ import React from 'react';
 import { render, unmountComponentAtNode } from 'react-dom';
 import routes from 'ui/routes';
 import template from 'plugins/security/views/management/users_grid/users.html';
-import 'plugins/security/services/shield_user';
 import { SECURITY_PATH, USERS_PATH } from '../management_urls';
 import { UsersListPage } from './components';
 import { UserAPIClient } from '../../../lib/api';
diff --git a/x-pack/legacy/plugins/security/public/views/overwritten_session/overwritten_session.tsx b/x-pack/legacy/plugins/security/public/views/overwritten_session/overwritten_session.tsx
index 76088443212b2..fb39c517e1c2c 100644
--- a/x-pack/legacy/plugins/security/public/views/overwritten_session/overwritten_session.tsx
+++ b/x-pack/legacy/plugins/security/public/views/overwritten_session/overwritten_session.tsx
@@ -10,36 +10,40 @@ import React from 'react';
 import { render } from 'react-dom';
 import chrome from 'ui/chrome';
 import { I18nContext } from 'ui/i18n';
+import { npSetup } from 'ui/new_platform';
+import { SecurityPluginSetup } from '../../../../../../plugins/security/public';
 import { AuthenticatedUser } from '../../../common/model';
 import { AuthenticationStatePage } from '../../components/authentication_state_page';
 
 chrome
   .setVisible(false)
   .setRootTemplate('<div id="reactOverwrittenSessionRoot" />')
-  .setRootController('overwritten_session', ($scope: any, ShieldUser: any) => {
+  .setRootController('overwritten_session', ($scope: any) => {
     $scope.$$postDigest(() => {
-      ShieldUser.getCurrent().$promise.then((user: AuthenticatedUser) => {
-        const overwrittenSessionPage = (
-          <I18nContext>
-            <AuthenticationStatePage
-              title={
-                <FormattedMessage
-                  id="xpack.security.overwrittenSession.title"
-                  defaultMessage="You previously logged in as a different user."
-                />
-              }
-            >
-              <EuiButton href={chrome.addBasePath('/')}>
-                <FormattedMessage
-                  id="xpack.security.overwrittenSession.continueAsUserText"
-                  defaultMessage="Continue as {username}"
-                  values={{ username: user.username }}
-                />
-              </EuiButton>
-            </AuthenticationStatePage>
-          </I18nContext>
-        );
-        render(overwrittenSessionPage, document.getElementById('reactOverwrittenSessionRoot'));
-      });
+      ((npSetup.plugins as unknown) as { security: SecurityPluginSetup }).security.authc
+        .getCurrentUser()
+        .then((user: AuthenticatedUser) => {
+          const overwrittenSessionPage = (
+            <I18nContext>
+              <AuthenticationStatePage
+                title={
+                  <FormattedMessage
+                    id="xpack.security.overwrittenSession.title"
+                    defaultMessage="You previously logged in as a different user."
+                  />
+                }
+              >
+                <EuiButton href={chrome.addBasePath('/')}>
+                  <FormattedMessage
+                    id="xpack.security.overwrittenSession.continueAsUserText"
+                    defaultMessage="Continue as {username}"
+                    values={{ username: user.username }}
+                  />
+                </EuiButton>
+              </AuthenticationStatePage>
+            </I18nContext>
+          );
+          render(overwrittenSessionPage, document.getElementById('reactOverwrittenSessionRoot'));
+        });
     });
   });
diff --git a/x-pack/plugins/security/public/authentication/authentication_service.ts b/x-pack/plugins/security/public/authentication/authentication_service.ts
new file mode 100644
index 0000000000000..23c45c88e563a
--- /dev/null
+++ b/x-pack/plugins/security/public/authentication/authentication_service.ts
@@ -0,0 +1,31 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { HttpSetup } from 'src/core/public';
+import { AuthenticatedUser } from '../../common/model';
+
+interface SetupParams {
+  http: HttpSetup;
+}
+
+export interface AuthenticationServiceSetup {
+  /**
+   * Returns currently authenticated user and throws if current user isn't authenticated.
+   */
+  getCurrentUser: () => Promise<AuthenticatedUser>;
+}
+
+export class AuthenticationService {
+  public setup({ http }: SetupParams): AuthenticationServiceSetup {
+    return {
+      async getCurrentUser() {
+        return (await http.get('/internal/security/me', {
+          headers: { 'kbn-system-api': true },
+        })) as AuthenticatedUser;
+      },
+    };
+  }
+}
diff --git a/x-pack/plugins/security/public/authentication/index.mock.ts b/x-pack/plugins/security/public/authentication/index.mock.ts
new file mode 100644
index 0000000000000..c8d77a5b62c6f
--- /dev/null
+++ b/x-pack/plugins/security/public/authentication/index.mock.ts
@@ -0,0 +1,13 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { AuthenticationServiceSetup } from './authentication_service';
+
+export const authenticationMock = {
+  createSetup: (): jest.Mocked<AuthenticationServiceSetup> => ({
+    getCurrentUser: jest.fn(),
+  }),
+};
diff --git a/x-pack/plugins/security/public/authentication/index.ts b/x-pack/plugins/security/public/authentication/index.ts
new file mode 100644
index 0000000000000..a55f4d7bb95b3
--- /dev/null
+++ b/x-pack/plugins/security/public/authentication/index.ts
@@ -0,0 +1,7 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+export { AuthenticationService, AuthenticationServiceSetup } from './authentication_service';
diff --git a/x-pack/plugins/security/public/index.ts b/x-pack/plugins/security/public/index.ts
index dc34fcbbe7d1e..336ec37d76a1b 100644
--- a/x-pack/plugins/security/public/index.ts
+++ b/x-pack/plugins/security/public/index.ts
@@ -6,7 +6,10 @@
 
 import { PluginInitializer } from 'src/core/public';
 import { SecurityPlugin, SecurityPluginSetup, SecurityPluginStart } from './plugin';
+
+export { SecurityPluginSetup, SecurityPluginStart };
 export { SessionInfo } from './types';
+export { AuthenticatedUser } from '../common/model';
 
 export const plugin: PluginInitializer<SecurityPluginSetup, SecurityPluginStart> = () =>
   new SecurityPlugin();
diff --git a/x-pack/plugins/security/public/mocks.ts b/x-pack/plugins/security/public/mocks.ts
new file mode 100644
index 0000000000000..3c0c59d10abd1
--- /dev/null
+++ b/x-pack/plugins/security/public/mocks.ts
@@ -0,0 +1,19 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { authenticationMock } from './authentication/index.mock';
+import { createSessionTimeoutMock } from './session/session_timeout.mock';
+
+function createSetupMock() {
+  return {
+    authc: authenticationMock.createSetup(),
+    sessionTimeout: createSessionTimeoutMock(),
+  };
+}
+
+export const securityMock = {
+  createSetup: createSetupMock,
+};
diff --git a/x-pack/plugins/security/public/nav_control/nav_control_service.test.ts b/x-pack/plugins/security/public/nav_control/nav_control_service.test.ts
index 3879d611d46eb..a9a89ee05f561 100644
--- a/x-pack/plugins/security/public/nav_control/nav_control_service.test.ts
+++ b/x-pack/plugins/security/public/nav_control/nav_control_service.test.ts
@@ -10,6 +10,8 @@ import { ILicense } from '../../../licensing/public';
 import { SecurityNavControlService } from '.';
 import { SecurityLicenseService } from '../../common/licensing';
 import { nextTick } from 'test_utils/enzyme_helpers';
+import { securityMock } from '../mocks';
+import { mockAuthenticatedUser } from '../../common/model/authenticated_user.mock';
 
 const validLicense = {
   isAvailable: true,
@@ -29,13 +31,17 @@ describe('SecurityNavControlService', () => {
     const license$ = new BehaviorSubject<ILicense>(validLicense);
 
     const navControlService = new SecurityNavControlService();
+    const mockSecuritySetup = securityMock.createSetup();
+    mockSecuritySetup.authc.getCurrentUser.mockResolvedValue(
+      mockAuthenticatedUser({ username: 'some-user', full_name: undefined })
+    );
     navControlService.setup({
       securityLicense: new SecurityLicenseService().setup({ license$ }).license,
+      authc: mockSecuritySetup.authc,
     });
 
     const coreStart = coreMock.createStart();
     coreStart.chrome.navControls.registerRight = jest.fn();
-    coreStart.http.get.mockResolvedValue({ username: 'some-user' });
 
     navControlService.start({ core: coreStart });
     expect(coreStart.chrome.navControls.registerRight).toHaveBeenCalledTimes(1);
@@ -93,6 +99,7 @@ describe('SecurityNavControlService', () => {
     const navControlService = new SecurityNavControlService();
     navControlService.setup({
       securityLicense: new SecurityLicenseService().setup({ license$ }).license,
+      authc: securityMock.createSetup().authc,
     });
 
     const coreStart = coreMock.createStart();
@@ -111,6 +118,7 @@ describe('SecurityNavControlService', () => {
     const navControlService = new SecurityNavControlService();
     navControlService.setup({
       securityLicense: new SecurityLicenseService().setup({ license$ }).license,
+      authc: securityMock.createSetup().authc,
     });
 
     const coreStart = coreMock.createStart();
@@ -126,6 +134,7 @@ describe('SecurityNavControlService', () => {
     const navControlService = new SecurityNavControlService();
     navControlService.setup({
       securityLicense: new SecurityLicenseService().setup({ license$ }).license,
+      authc: securityMock.createSetup().authc,
     });
 
     const coreStart = coreMock.createStart();
@@ -146,6 +155,7 @@ describe('SecurityNavControlService', () => {
     const navControlService = new SecurityNavControlService();
     navControlService.setup({
       securityLicense: new SecurityLicenseService().setup({ license$ }).license,
+      authc: securityMock.createSetup().authc,
     });
 
     const coreStart = coreMock.createStart();
diff --git a/x-pack/plugins/security/public/nav_control/nav_control_service.tsx b/x-pack/plugins/security/public/nav_control/nav_control_service.tsx
index aeeb84219c937..153e7112dc95b 100644
--- a/x-pack/plugins/security/public/nav_control/nav_control_service.tsx
+++ b/x-pack/plugins/security/public/nav_control/nav_control_service.tsx
@@ -9,11 +9,12 @@ import { CoreStart } from 'src/core/public';
 import ReactDOM from 'react-dom';
 import React from 'react';
 import { SecurityLicense } from '../../common/licensing';
-import { AuthenticatedUser } from '../../common/model';
 import { SecurityNavControl } from './nav_control_component';
+import { AuthenticationServiceSetup } from '../authentication';
 
 interface SetupDeps {
   securityLicense: SecurityLicense;
+  authc: AuthenticationServiceSetup;
 }
 
 interface StartDeps {
@@ -22,13 +23,15 @@ interface StartDeps {
 
 export class SecurityNavControlService {
   private securityLicense!: SecurityLicense;
+  private authc!: AuthenticationServiceSetup;
 
   private navControlRegistered!: boolean;
 
   private securityFeaturesSubscription?: Subscription;
 
-  public setup({ securityLicense }: SetupDeps) {
+  public setup({ securityLicense, authc }: SetupDeps) {
     this.securityLicense = securityLicense;
+    this.authc = authc;
   }
 
   public start({ core }: StartDeps) {
@@ -38,14 +41,8 @@ export class SecurityNavControlService {
 
         const shouldRegisterNavControl =
           !isAnonymousPath && showLinks && !this.navControlRegistered;
-
         if (shouldRegisterNavControl) {
-          const user = core.http.get('/internal/security/me', {
-            headers: {
-              'kbn-system-api': true,
-            },
-          }) as Promise<AuthenticatedUser>;
-          this.registerSecurityNavControl(core, user);
+          this.registerSecurityNavControl(core);
         }
       }
     );
@@ -60,16 +57,16 @@ export class SecurityNavControlService {
   }
 
   private registerSecurityNavControl(
-    core: Pick<CoreStart, 'chrome' | 'http' | 'i18n' | 'application'>,
-    user: Promise<AuthenticatedUser>
+    core: Pick<CoreStart, 'chrome' | 'http' | 'i18n' | 'application'>
   ) {
+    const currentUserPromise = this.authc.getCurrentUser();
     core.chrome.navControls.registerRight({
       order: 2000,
       mount: (el: HTMLElement) => {
         const I18nContext = core.i18n.Context;
 
         const props = {
-          user,
+          user: currentUserPromise,
           editProfileUrl: core.http.basePath.prepend('/app/kibana#/account'),
           logoutUrl: core.http.basePath.prepend(`/logout`),
         };
diff --git a/x-pack/plugins/security/public/plugin.ts b/x-pack/plugins/security/public/plugin.ts
index 0f10f9d89f25a..50e0b838c750f 100644
--- a/x-pack/plugins/security/public/plugin.ts
+++ b/x-pack/plugins/security/public/plugin.ts
@@ -9,18 +9,20 @@ import { LicensingPluginSetup } from '../../licensing/public';
 import {
   SessionExpired,
   SessionTimeout,
+  ISessionTimeout,
   SessionTimeoutHttpInterceptor,
   UnauthorizedResponseHttpInterceptor,
 } from './session';
 import { SecurityLicenseService } from '../common/licensing';
 import { SecurityNavControlService } from './nav_control';
+import { AuthenticationService } from './authentication';
 
 export interface PluginSetupDependencies {
   licensing: LicensingPluginSetup;
 }
 
 export class SecurityPlugin implements Plugin<SecurityPluginSetup, SecurityPluginStart> {
-  private sessionTimeout!: SessionTimeout;
+  private sessionTimeout!: ISessionTimeout;
 
   private navControlService!: SecurityNavControlService;
 
@@ -43,12 +45,15 @@ export class SecurityPlugin implements Plugin<SecurityPluginSetup, SecurityPlugi
     this.securityLicenseService = new SecurityLicenseService();
     const { license } = this.securityLicenseService.setup({ license$: licensing.license$ });
 
+    const authc = new AuthenticationService().setup({ http: core.http });
+
     this.navControlService.setup({
       securityLicense: license,
+      authc,
     });
 
     return {
-      anonymousPaths,
+      authc,
       sessionTimeout: this.sessionTimeout,
     };
   }
diff --git a/x-pack/plugins/security/public/session/index.ts b/x-pack/plugins/security/public/session/index.ts
index 253207dc1b717..5c245029e3983 100644
--- a/x-pack/plugins/security/public/session/index.ts
+++ b/x-pack/plugins/security/public/session/index.ts
@@ -5,6 +5,6 @@
  */
 
 export { SessionExpired } from './session_expired';
-export { SessionTimeout } from './session_timeout';
+export { SessionTimeout, ISessionTimeout } from './session_timeout';
 export { SessionTimeoutHttpInterceptor } from './session_timeout_http_interceptor';
 export { UnauthorizedResponseHttpInterceptor } from './unauthorized_response_http_interceptor';
diff --git a/x-pack/plugins/security/public/session/session_timeout.tsx b/x-pack/plugins/security/public/session/session_timeout.tsx
index 0069e78b5f372..e237201699b9b 100644
--- a/x-pack/plugins/security/public/session/session_timeout.tsx
+++ b/x-pack/plugins/security/public/session/session_timeout.tsx
@@ -41,7 +41,7 @@ export interface ISessionTimeout {
   extend(url: string): void;
 }
 
-export class SessionTimeout {
+export class SessionTimeout implements ISessionTimeout {
   private channel?: BroadcastChannel<SessionInfo>;
   private sessionInfo?: SessionInfo;
   private fetchTimer?: number;
diff --git a/x-pack/plugins/security/server/config.ts b/x-pack/plugins/security/server/config.ts
index b3f96497b0538..4f1c25702ae97 100644
--- a/x-pack/plugins/security/server/config.ts
+++ b/x-pack/plugins/security/server/config.ts
@@ -8,7 +8,6 @@ import crypto from 'crypto';
 import { Observable } from 'rxjs';
 import { map } from 'rxjs/operators';
 import { schema, Type, TypeOf } from '@kbn/config-schema';
-import { duration } from 'moment';
 import { PluginInitializerContext } from '../../../../src/core/server';
 
 export type ConfigType = ReturnType<typeof createConfig$> extends Observable<infer P>
@@ -35,7 +34,6 @@ export const ConfigSchema = schema.object(
       schema.maybe(schema.string({ minLength: 32 })),
       schema.string({ minLength: 32, defaultValue: 'a'.repeat(32) })
     ),
-    sessionTimeout: schema.maybe(schema.nullable(schema.number())), // DEPRECATED
     session: schema.object({
       idleTimeout: schema.nullable(schema.duration()),
       lifespan: schema.nullable(schema.duration()),
@@ -88,22 +86,11 @@ export function createConfig$(context: PluginInitializerContext, isTLSEnabled: b
         secureCookies = true;
       }
 
-      // "sessionTimeout" is deprecated and replaced with "session.idleTimeout"
-      // however, NP does not yet have a mechanism to automatically rename deprecated keys
-      // for the time being, we'll do it manually:
-      const deprecatedSessionTimeout =
-        typeof config.sessionTimeout === 'number' ? duration(config.sessionTimeout) : null;
-      const val = {
+      return {
         ...config,
         encryptionKey,
         secureCookies,
-        session: {
-          ...config.session,
-          idleTimeout: config.session.idleTimeout || deprecatedSessionTimeout,
-        },
       };
-      delete val.sessionTimeout; // DEPRECATED
-      return val;
     })
   );
 }
diff --git a/x-pack/plugins/security/server/index.ts b/x-pack/plugins/security/server/index.ts
index e189b71345ffc..33f554be5caa3 100644
--- a/x-pack/plugins/security/server/index.ts
+++ b/x-pack/plugins/security/server/index.ts
@@ -4,9 +4,15 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
-import { PluginInitializerContext } from '../../../../src/core/server';
+import { TypeOf } from '@kbn/config-schema';
+import {
+  PluginConfigDescriptor,
+  PluginInitializer,
+  PluginInitializerContext,
+  RecursiveReadonly,
+} from '../../../../src/core/server';
 import { ConfigSchema } from './config';
-import { Plugin } from './plugin';
+import { Plugin, PluginSetupContract, PluginSetupDependencies } from './plugin';
 
 // These exports are part of public Security plugin contract, any change in signature of exported
 // functions or removal of exports should be considered as a breaking change.
@@ -17,8 +23,17 @@ export {
   InvalidateAPIKeyParams,
   InvalidateAPIKeyResult,
 } from './authentication';
-export { PluginSetupContract } from './plugin';
+export { PluginSetupContract };
 
-export const config = { schema: ConfigSchema };
-export const plugin = (initializerContext: PluginInitializerContext) =>
-  new Plugin(initializerContext);
+export const config: PluginConfigDescriptor<TypeOf<typeof ConfigSchema>> = {
+  schema: ConfigSchema,
+  deprecations: ({ rename, unused }) => [
+    rename('sessionTimeout', 'session.idleTimeout'),
+    unused('authorization.legacyFallback.enabled'),
+  ],
+};
+export const plugin: PluginInitializer<
+  RecursiveReadonly<PluginSetupContract>,
+  void,
+  PluginSetupDependencies
+> = (initializerContext: PluginInitializerContext) => new Plugin(initializerContext);
diff --git a/x-pack/plugins/security/server/plugin.ts b/x-pack/plugins/security/server/plugin.ts
index cdd2a024310bb..9c4b01f94ef4d 100644
--- a/x-pack/plugins/security/server/plugin.ts
+++ b/x-pack/plugins/security/server/plugin.ts
@@ -110,10 +110,7 @@ export class Plugin {
     this.logger = this.initializerContext.logger.get();
   }
 
-  public async setup(
-    core: CoreSetup,
-    { features, licensing }: PluginSetupDependencies
-  ): Promise<RecursiveReadonly<PluginSetupContract>> {
+  public async setup(core: CoreSetup, { features, licensing }: PluginSetupDependencies) {
     const [config, legacyConfig] = await combineLatest([
       createConfig$(this.initializerContext, core.http.isTlsEnabled),
       this.initializerContext.config.legacy.globalConfig$,
@@ -169,7 +166,7 @@ export class Plugin {
       csp: core.http.csp,
     });
 
-    return deepFreeze({
+    return deepFreeze<PluginSetupContract>({
       authc,
 
       authz: {