(CNET): “The three social networks — all owned by Facebook — started having issues around 11:40 a.m. ET, according to Down Detector, a crowdsourced website that tracks online outages.”
“Security expert Brian Krebs said it appears to be a DNS related-issue, adding that something ’caused the company to revoke key digital records that tell computers and other Internet-enabled devices how to find these destinations online.'”
https://www.npr.org/live-updates/facebook-whistleblower-allegations
(NPR): “A Facebook whistleblower says the social network puts profits over safety, and has handed thousands of pages of internal company documents to federal law enforcement.”