Security News > 2023 > May > Twitter says 'security incident' exposed private Circle tweets
Twitter disclosed that a 'security incident' caused private tweets sent to Twitter Circles to show publicly to users outside of the Circle.
Twitter Circle is a feature released in August 2022 that allows users to send tweets to a small circle of people, promising to keep them private from the public.
Around April 7th, Twitter users began warning that tweets to Twitter Circles were no longer private and shown publicly to people outside of the Circle in their timelines.
In a notification sent to impacted users yesterday, Twitter says a 'security incident' is behind the public display of private Twitter Circle tweets.
"We're contacting you because your Twitter account may have been potentially impacted by a security incident that occurred earlier this year", reads a security incident notification sent by Twitter yesterday.
"In April 2023, a security incident may have allowed users outside of your Twitter Circle to see tweets that should have otherwise been limited to the Circle to which you were posting. This issue was identified by our security team and immediately fixed so that these tweets were no longer visible outside of your Circle."