At least one security firm thinks the culprit of the Facebook outage could be
a border gateway protocol routing leak.
Routing internet traffic around the world relies on the border gateway protocol (BGP), which manages how internet traffic is routed the internet. BGP relies on trust between network operators to not send incorrect or malicious data. But mistakes happen, and malformed data can form a “route leak” that leads to confusion over where internet traffic should go, and can lead to massive outages.
In a BGP route leak, the routing announcements from an autonomous system that guides the information to its destination is inaccurate and is rejected by either receiver, the sender or an intermediary along the route that packet is supposed to travel.
That may be what happened to Facebook.
“At approximately 12:52PM EST on March 13th, 2019, it appears that an accidental BGP routing leak from a European ISP to a major transit ISP, which was then propagated onwards to some peers and/or downstreams of the transit ISP in question, resulted in perceptible disruption of access to some well-known Internet properties for a short interval,” explained Roland Dobbins, a NETSCOUT principal engineer in an email to TechCrunch.
Facebook and its related family of apps have been down for most of Wednesday.
There’s not much more information to share at this point,
but the web is freaking out (as is to be expected).
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