https://www.bleepingcomputer.com/news/technology/facebook-outage-leads-to-massive-user-exodus-to-telegram-signal/

Facebook has finally confirmed that a BGP routing blunder caused the worldwide outage affecting its social media platforms and apps.

This comes after competitors like Signal and Telegram shared info on a massive exodus of Facebook users joining or switching to other platforms following the 6-hour-long downtime that impacted Facebook, Instagram, and WhatsApp.