Twitter exposed private Circle tweets

Twitter has revealed that a "security incident" occurred, leading to private tweets sent to Twitter Circles being exposed publicly to users outside of the intended Circle. Twitter Circle is a privacy feature introduced in August 2022, allowing users to send tweets to a select group of individuals with the assurance of keeping them private from the general public. According to Twitter's description of the feature, Twitter Circle enables users to share their thoughts with a smaller, chosen audience, and only those added to the Circle can interact and reply to the shared tweets. However, starting around April 7th, Twitter users began noticing that tweets sent to Twitter Circles were no longer private. Instead, they were displayed publicly in the timelines of people outside of the intended Circle. In a recent notification sent to affected users, Twitter acknowledged that a 'security incident' was responsible for the unintended exposure of private Twitter Circle tweets. The notification, sent by Twitter, informed users that their accounts may have been potentially impacted by the incident that occurred in April 2023. Twitter's security team identified the issue and promptly resolved it to prevent further visibility of these tweets outside of the intended Circle. Twitter conducted a comprehensive investigation to understand the cause of the incident and has taken measures to address the issue. The platform expresses deep regret for the occurrence, as it is committed to safeguarding the privacy of its users.