Odd Type Of Forum Hack
 

It's been an easy week on my forum, a member and personal friend of mine decides he wants to sell his motorcycle to upgrade, so a thread is created. People respond and comment, a day later he announces that the bike has sold. Within this week the same member creates and responds to threads, we chat back and forth a bit via PM. Business as usual. I find out tonight that he has been out of town for a week, and asks "why is my bike for sale?" Not only my forum, but four other forums of the same niche have the same type of posts. What's even more bizzare is this person posing as this member sent myself and three of his friends a personal email saying that the person he sold his bike to, cheque didn't clear so I had to go and get the bike back, etc, etc. Now he did admit to having the same password across all the boards, but what would appeal to somebody to take the time and cause this kind of trouble? On top of all that, I noticed a new member has joined the site tonight...with the original member's email address. It's very odd and I'm not sure what to tell him, to me this isn't a site security issue, it's more of a password security issue. Frankly, I am bothered by the whole situation and I would like to know the root cause. Anybody have a similar experience??

seems like someone try to avoid a bike sale... it's easy to say "it was not me, my account was tricked, blah blah..."

Did you check the IPs of the posts?

That is rather alarming!
That person must have been stalking the 'victim' online for ages to guess the password, know his email and bike details!!

Yes I did, and the IP doesn't match his regular IP. Strange thing, we now have a new user with the same mystery IP and used his email to register. Very odd

Your not supposed to allow members to reuse an email address.

Someone could have gotten your friends email password - this could have been done through a keyword logger. Or he checked his email from an infected computer.

It does not sound like a "hack" at all, but more of a combination of low security settings on your forum and your friends computer.

I assume this is an hotmail address?

Yeah, I've since set the radio button over to not allow same email addys

Same, it's a gmail