According to a blog post published Wednesday by Internet monitoring service BGPMon, the hijack lasted a total of six minutes and affected 80 separate address blocks. It started at 4:43 UTC and continued for three minutes. A second hijacking occurred at 7:07 UTC and also lasted three minutes. Meanwhile, a second monitoring service, Qrator Labs, said the event lasted for two hours, although the number of hijacked address blocks varied from 40 to 80 during that time.
While BGP rerouting events are often the result of human error rather than malicious intent, BGPMon researchers said several things made Wednesday’s incident “suspicious.” First, the rerouted traffic belonged to some of the most sensitive companies, which—besides Google, Facebook, Apple, and Microsoft—also included Twitch, NTT Communications, and Riot Games. Besides the cherrypicked targets, hijacked IP addresses were broken up into smaller, more specific blocks than those announced by affected companies, an indication the rerouting was “intentional.”