nVisium Blog The Top 5 Lessons Learned From the Great Facebook Outage of 2021

The internet was shaken by the outage of Facebook earlier this month. Dozens of big-name companies, including countless smaller ones, were affected by this outage. Because of something as simple as a misconfigured Domain Name System (DNS) record, every device with the Facebook app integration started DDoS-ing recursive DNS resolvers - DDoS meaning "Distributed Denial of Service." This, in turn, caused overloading in numerous cases across the board.