The company says it doesn’t have evidence that suggests anyone was able to exploit the vulnerability. However, it notes, “we can’t be completely sure so we are taking extra caution.” The company is contacting people it thinks may have had their app exposed to the bug with instructions on how to protect their account. The bug doesn’t affect the iOS Twitter app.

If you get a message from the company, it says you should follow the instructions it provides as soon as possible. Just to be sure, if you use Twitter on your Android phone, you should also update to the latest version through the Play Store as soon as possible. In the meantime, the company says you can contact its Data Protection Office to get additional about your account’s security if you’re concerned.