[userbinator]

As someone who's used open proxies to get around geo-IP-tracking/restrictions/censoring, I get the point about excessive bandwidth usage (you can apply per-IP ratelimiting for that), but it does make me a bit sad that open proxies are now considered "malicious"...

[MariuszGalus]

I used the word malicious because I saw people and have a list of credentials now from compromised accounts and spambots. Mainly from Russia. Also, all the sport betting websites that were being hit. I think there must have been something shady there. I was also used for ad-click fraud. :|