diff --git a/web/database/database-module-provider.js b/web/database/database-module-provider.js
--- a/web/database/database-module-provider.js
+++ b/web/database/database-module-provider.js
@@ -16,6 +16,7 @@
   initSuccess: 'INIT_SUCCESS',
   initInProgress: 'INIT_IN_PROGRESS',
   initError: 'INIT_ERROR',
+  deleting: 'DELETING',
 });
 
 type DatabaseStatus = $Values<typeof databaseStatuses>;
@@ -61,12 +62,35 @@
     console.error(error);
   };
 
+  async clearSensitiveData(): Promise<void> {
+    this.status = databaseStatuses.deleting;
+    await this.workerProxy.scheduleOnWorker({
+      type: workerRequestMessageTypes.CLEAR_SENSITIVE_DATA,
+    });
+    const origin = window.location.origin;
+    try {
+      await this.workerProxy.scheduleOnWorker({
+        type: workerRequestMessageTypes.INIT,
+        sqljsFilePath: `${origin}${SQLJS_FILE_PATH}`,
+        sqljsFilename,
+      });
+
+      this.status = databaseStatuses.initSuccess;
+    } catch (error) {
+      this.status = databaseStatuses.initError;
+      console.error(`Database initialization failure`, error);
+    }
+  }
+
   async schedule(
     payload: WorkerRequestMessage,
   ): Promise<?WorkerResponseMessage> {
     if (this.status === databaseStatuses.notSupported) {
       throw new Error('Database not supported');
     }
+    if (this.status === databaseStatuses.deleting) {
+      throw new Error('Database being deleted');
+    }
 
     if (this.status === databaseStatuses.initInProgress) {
       await this.initPromise;
diff --git a/web/database/sqlite-data-handler-web.js b/web/database/sqlite-data-handler-web.js
new file mode 100644
--- /dev/null
+++ b/web/database/sqlite-data-handler-web.js
@@ -0,0 +1,58 @@
+// @flow
+
+import * as React from 'react';
+
+import { isLoggedIn } from 'lib/selectors/user-selectors.js';
+
+import { databaseModule } from './database-module-provider.js';
+import { useSelector } from '../redux/redux-utils.js';
+import { workerRequestMessageTypes } from '../types/worker-types.js';
+
+function SQLiteDataHandlerWeb(): React.Node {
+  const rehydrateConcluded = useSelector(
+    state => !!(state._persist && state._persist.rehydrated),
+  );
+  const currentLoggedInUserID = useSelector(state =>
+    state.currentUserInfo?.anonymous ? undefined : state.currentUserInfo?.id,
+  );
+  const loggedIn = useSelector(isLoggedIn);
+
+  const handleSensitiveData = React.useCallback(async () => {
+    try {
+      const currentUserData = await databaseModule.schedule({
+        type: workerRequestMessageTypes.GET_CURRENT_USER_ID,
+      });
+      if (
+        currentUserData?.userID &&
+        currentUserData.userID !== currentLoggedInUserID
+      ) {
+        await databaseModule.clearSensitiveData();
+      }
+      if (currentLoggedInUserID) {
+        await databaseModule.schedule({
+          type: workerRequestMessageTypes.SET_CURRENT_USER_ID,
+          userID: currentLoggedInUserID,
+        });
+      }
+    } catch (error) {
+      console.error(error);
+    }
+  }, [currentLoggedInUserID]);
+
+  React.useEffect(() => {
+    if (!rehydrateConcluded) {
+      return;
+    }
+    if (!loggedIn) {
+      return;
+    }
+
+    (async () => {
+      await handleSensitiveData();
+    })();
+  }, [handleSensitiveData, loggedIn, rehydrateConcluded]);
+
+  return null;
+}
+
+export { SQLiteDataHandlerWeb };
diff --git a/web/database/worker/db-worker.js b/web/database/worker/db-worker.js
--- a/web/database/worker/db-worker.js
+++ b/web/database/worker/db-worker.js
@@ -167,6 +167,13 @@
   if (message.type === workerRequestMessageTypes.INIT) {
     await initDatabase(message.sqljsFilePath, message.sqljsFilename);
     return;
+  } else if (message.type === workerRequestMessageTypes.CLEAR_SENSITIVE_DATA) {
+    encryptionKey = null;
+    if (sqliteDb) {
+      sqliteDb.close();
+    }
+    await localforage.clear();
+    return;
   }
 
   if (!sqliteDb) {
diff --git a/web/types/worker-types.js b/web/types/worker-types.js
--- a/web/types/worker-types.js
+++ b/web/types/worker-types.js
@@ -17,6 +17,7 @@
   GET_PERSIST_STORAGE_ITEM: 7,
   SET_PERSIST_STORAGE_ITEM: 8,
   REMOVE_PERSIST_STORAGE_ITEM: 9,
+  CLEAR_SENSITIVE_DATA: 10,
 });
 
 export type PingWorkerRequestMessage = {
@@ -68,6 +69,10 @@
   +key: string,
 };
 
+export type ClearSensitiveDataRequestMessage = {
+  +type: 10,
+};
+
 export type WorkerRequestMessage =
   | PingWorkerRequestMessage
   | InitWorkerRequestMessage
@@ -78,7 +83,8 @@
   | GetCurrentUserIDRequestMessage
   | GetPersistStorageItemRequestMessage
   | SetPersistStorageItemRequestMessage
-  | RemovePersistStorageItemRequestMessage;
+  | RemovePersistStorageItemRequestMessage
+  | ClearSensitiveDataRequestMessage;
 
 export type WorkerRequestProxyMessage = {
   +id: number,