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Why Facebook and Instagram went down for hours yesterday : NPR | #cybersecurity | #cyberattack | #education | #technology | #infosec



An update to Facebook’s routers that coordinate network traffic went wrong on Monday, sending a wave of disruption and effectively shutting down Instagram, Facebook and WhatsApp.

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Anadolu Agency via Getty Images

An update to Facebook’s routers that coordinate network traffic went wrong on Monday, sending a wave of disruption and effectively shutting down Instagram, Facebook and WhatsApp.

Anadolu Agency via Getty Images

When Facebook suffered an outage of about six hours on Monday, businesses suffered along with it. The platform and its Instagram and WhatsApp siblings play key roles in commerce, with some companies relying on Facebook’s network instead of their own websites.

But on Monday, that network came crashing down. It wasn’t a hack, Facebook said, but rather a self-inflicted problem.

An update to Facebook’s routers that coordinate network traffic went wrong, sending a wave of disruptions rippling through its systems. As a result, all things Facebook were effectively shut down, worldwide.

Why did the outage last so long?

The problem was made worse — and its solution more elusive — because the outage also whacked Facebook’s own internal systems and tools that it relies on for daily operations. Employees also reportedly faced difficulty in physically reaching the space where the routers are housed.

“From a technical perspective, they’re going to have to review what they do and how they’ve designed things,” cybersecurity expert Barrett Lyon said in an interview with NPR.

The outage cost the company tens of millions of dollars, Marketwatch says, comparing the company’s lost hours with its most recent revenue report.





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