"IP based backoff is a speed bump" Exactly what I want from it. Speed bumps solve problems. Locking your car doors solves a problem. Neither guarantee anyth

"IP based backoff is a speed bump" Exactly what I want from it. Speed bumps solve problems. Locking your car doors solves a problem. Neither guarantee anything but both have real effects which make people's lives better. That is, there can be another "N" here where the account gets shut down completely. If it ends up happening against one account from more than, say, 50 different IPs then shut it down and resort to inconveniencing the real user. Let's say 8 tries * 50 IPs, 400 is the new N where total cutoff happens. Too high? This makes it more likely that the bona fide customer won't be bothered by stupid script kiddies.