Originally Posted by
Mod
1. Possible they detected you going in under an unknown IP for the first time; if you changed the PW in the first instance of logging in under that IP, might be autoflagged for investigation.
2. If you and the owner have both been accessing the account periodically within a short time period, it may have also been autoflagged the moment you touched the PW.
3. If the proxy you used was public and from a well-known proxy site, possible it's already been used and blacklisted previously.