Facing the wrong way
Can this work in reverse to shield the world from unmaintained Google servers? Google Groups has been serving a prolific spammer from Chinanet-FJ for 8+ years now. See https://groups.google.com/d/msg/rec.sport.disc/aSXOr2Pna1g/3Ev8xKes3LYJ or just search Usenet for "Nike". Oh right, Google doesn't really want to stop attacks. They want to consume all of your data.