Facebook Inc (FB.O) blamed a "faulty configuration change" for a nearly six-hour outage on Monday that prevented the company's 3.5 billion users from accessing its social media and messaging services such as WhatsApp, Instagram and Messenger, Reuters reported.
However, the company in a late Monday blog post did not specify who executed the configuration change and whether it was planned.
Several Facebook employees who declined to be named had told Reuters earlier that they believed that the outage was caused by an internal mistake in how internet traffic is routed to its systems.
The failures of internal communication tools and other resources that depend on that same network in order to work compounded the error, the employees said. Security experts have said an inadvertent mistake or sabotage by an insider were both plausible.
The Facebook outage is the largest ever tracked by web monitoring group Downdetector.
The outage was the second blow to the social media giant in as many days after a whistleblower on Sunday accused the company of repeatedly prioritizing profit over clamping down on hate speech and misinformation.
As the world flocked to competing apps such as Twitter and TikTok, shares of Facebook fell 4.9%, their biggest daily drop since last November, amid a broader selloff in technology stocks on Monday. Shares rose about half a percent in after-hours trade following resumption of service.
KI/PR
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