So, being completely inactive on this forum, I don't really care about my accounts security and all.
Given that that's the case, I still have e-mail notifications on cause I like to lurk certain topics.
Recently supposedly there was a trade requested towards @

without my knowledge, so I assume my account was compromised.
Looked at his profile and, as I thought, there's been ~60 positive trade requests in ~15 minutes.
I assume these requests are being done on hijacked accounts, just like my own, after changing my positive rep to negative, it was overwritten, so I decided to change my account details.
Currently seeing if he's still able to change my response, to see if it was because my account was compromised, or because there's an exploit afoot, but we will see with time.
For now I'll be contacting a moderator for this issue, if anyone else has experienced this, don't be afraid to get in contact, pretty interesting if it's an exploit and not just a compromised account.