Twitter - How to revoke the access to connected apps
You can easily expand the features of Twitter using third party apps/services, such as TweetDeck, Bitly,....etc.
When you no longer use a connected app, you can always revoke its access to your Twitter account:
Sign-in to your Twitter account.
Click on the gear icon > Settings.
Go to the Apps section.
The list of connected app is displayed to the right.
Click on the Revoke access button to disconnect an app from your Twitter account.