Cyber Risks · Krebs on Security

What Happened to Facebook, Instagram, & WhatsApp?

Summary: On October 4, 2021, Facebook, Instagram and WhatsApp went down globally after a routine BGP update gone wrong revoked the records telling the internet how to reach the company's domains. Facebook's Santosh Janardhan said configuration changes on the backbone routers caused a cascading effect that halted its services, and the company said it found no evidence user data was compromised.

Key Takeaway: The errant update also locked employees out of internal tools and, per reports, building badges, so the people who could revert the change could not reach the systems to do it - and Packet Clearing House saw a 40 percent global increase in wayward DNS traffic while billions of devices kept asking where Facebook was.

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Topics
Data Breaches
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