Facebook began alerting users that a technical error in its Messenger Kids app allowed children to engage in group chats with unapproved users, The Verge reports. Facebook confirmed alerts were sent to thousands of users and that it had turned off the affected chats. It is unclear how long the problem persisted before it was discovered. Launched in December 2017, the app was designed to give parents the ability to approve who minors could message but has faced scrutiny for how it handles children's privacy. 
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