The first thing any newbie should do is remove "DefaultTrust" from their trust list. Why it is in there in the first place is a matter of speculation, but the fact is, a good portion of the people in "DefaultTrust" can't be trusted nor should you trust them, since you don't know them.

Remove everyone from your trust list and start building your own trust list of people you actually trust. Don't trust the site op and moderators, they are not here to help you or protect you from scammers or anything like that... that is your job. Don't blindly trust, remove DefaultTrust