A group of hackers known as “Lizard Sqaud” have already claimed responsibility for the Facebook and instagram outage as a quick search of #tangodown on twitter will readily confirm. Krebs on Security has many write-ups about this group and doubtless there will be another soon. This outage only started a few minutes ago but nobody knows how long it will persist. Until then twitter and reddit are still up.

TL;DR: It’s not just you. Facebook is down for everyone globally