Seriously. Don't trust the exchanges, don't trust online wallet services, don't trust your anti-virus software, and don't trust anybody online.
When I needed people to trust me to hold bitcoins for a contest, I deposited 50 bitcoins as a bond with a well-respected forum member,
Am I the only one who finds it ironic?

After all, the two person would be in cahoots so while A claims to have left insurance with B, they are actually on the same team.