Google error it the root cause of a widespread Internet outage in Japan that lasted for about an hour on Friday, August 25. The incident was caused by a BGM route hijack that began at 12:22 PM local Japan time and was fixed by 1:01 PM.
Border Gateway Protocol (BGP) is a standardized exterior gateway protocol designed to exchange routing and reachability information among autonomous systems (AS) on the Internet. It interconnects the networks of major Internet service providers that announce which IP addresses are available on their networks.
If an ISP provides wrong information on the availability of IP address blocks we are in presence of a BGM route hijack ISPs.