Facebook says more than 800,000 users may have been affected by a bug that unblocked people they previously had blocked. The company said Monday that the bug was active between May 29 and June 5.

Facebook says more than 800,000 users may have been affected by a bug that unblocked people they previously had blocked. The company said Monday that the bug was active between May 29 and June 5.

Facebook is warning some 800,000 users that a bug caused the system to unblock some people that they had previously blocked. It meant that the supposedly-blocked users could view the profiles of ...

Facebook announced on Monday it will notify 800,000 people about a bug that unblocked accounts those users had previously blocked. The bug was active between May 29 and June 5. In a blog post, ...

Facebook revealed that a “software bug ‘unblocked’ some people who had previously been blocked by another user, meaning the unblocked user could suddenly see some posts from the person who blocked ...