https://www.theguardian.com/technology/2021/oct/05/what-caused-facebook-whatsapp-instagram-outage
Of course such disruptions will continue through the years and not just to FB.
https://engineering.fb.com/2021/10/04/networking-traffic/outage/
Sometimes its by accident, but sometimes its a well orchestrated shutdown.
https://www.theverge.com/2021/10/4/22709123/facebook-outage-down-detector-cloudflare
https://www.cnbc.com/2021/10/05/facebook-says-sorry-for-mass-outage-and-reveals-why-it-happened.html
https://www.techradar.com/news/whatsapp-instagram-and-facebook-are-all-down-right-now
https://blog.cloudflare.com/october-2021-facebook-outage/
https://en.wikipedia.org/wiki/2021_Facebook_outage
https://downdetector.com/status/facebook/map , https://downdetector.com
https://downdetector.com/archive
https://www.csis.org/programs/strategic-technologies-program/significant-cyber-incidents
