While details are scarce, the evidence thus far suggests that an update made to FB’s Border Gateway Protocol (BGP) records, which relates to how traffic is routed across the internet, may have caused the issue. It remains unclear if the incident was merely an accident or malicious in nature. As of publication, some services have begun to return online.
A satire account on 推特 seemingly convinced thousands that the problem at FB had been caused by a Chinese hacker.