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
@@ -81,6 +81,20 @@
     }
   }
 
+  async clearSensitiveData(): Promise<void> {
+    this.status = databaseStatuses.notSupported;
+    await this.workerProxy.scheduleOnWorker({
+      type: workerRequestMessageTypes.CLEAR_SENSITIVE_DATA,
+    });
+  }
+
+  async isDatabaseWorkable(): Promise<boolean> {
+    if (this.status === databaseStatuses.initInProgress) {
+      await this.initPromise;
+    }
+    return this.status === databaseStatuses.initSuccess;
+  }
+
   async schedule(
     payload: WorkerRequestMessage,
   ): Promise<?WorkerResponseMessage> {
diff --git a/web/database/sqlite-data-handler.js b/web/database/sqlite-data-handler.js
new file mode 100644
--- /dev/null
+++ b/web/database/sqlite-data-handler.js
@@ -0,0 +1,60 @@
+// @flow
+
+import * as React from 'react';
+
+import { databaseModule } from './database-module-provider.js';
+import { useSelector } from '../redux/redux-utils.js';
+import { workerRequestMessageTypes } from '../types/worker-types.js';
+
+function SQLiteDataHandler(): React.Node {
+  const rehydrateConcluded = useSelector(
+    state => !!(state._persist && state._persist.rehydrated),
+  );
+  const currentLoggedInUserID = useSelector(state =>
+    state.currentUserInfo?.anonymous ? undefined : state.currentUserInfo?.id,
+  );
+
+  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(() => {
+    (async () => {
+      if (currentLoggedInUserID) {
+        await databaseModule.userLoggedIn(currentLoggedInUserID);
+      }
+      if (!rehydrateConcluded) {
+        return;
+      }
+
+      const isWorkable = await databaseModule.isDatabaseWorkable();
+      if (!isWorkable) {
+        return;
+      }
+      await handleSensitiveData();
+    })();
+  }, [currentLoggedInUserID, handleSensitiveData, rehydrateConcluded]);
+
+  return null;
+}
+
+export { SQLiteDataHandler };
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
@@ -171,6 +171,13 @@
   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,