Facebook and Instagram partially rejoined the global Internet on Monday afternoon, crippling the social media platform in nearly six hours.
Facebook and its WhatsApp and Instagram apps went dark around noon Eastern time, after website monitoring group DownDetector said it was the biggest failure ever, with 10.6 million problem reports globally.
Around 5:45 p.m. ET, some Facebook users began gaining partial access to the social media app. The connection problem persisted for at least some people in WhatsApp.
The outage was the second blow to the social media giant in several days after a whistleblower on Sunday accused the company of repeatedly prioritizing profits over crackdown on hate speech and misinformation.
Shares of Facebook, which has nearly 2 billion daily active users, opened lower after a whistleblower report and slipped further to trade down 5.3% in afternoon trading on Monday. They were on their way to their worst day in nearly a year, amid widespread selling in technology stocks.
Security experts said the disruption could be the result of an internal fault, although sabotage by an insider would be theoretically possible.
“Facebook basically locked your keys in your car,” tweeted Jonathan Zittren, director of Harvard’s Berkman Klein Center for Internet and Society.
(Except for the title, this story has not been edited by NB staff and is published from a syndicated feed.)