Problem choosing bachelor thesis subject [on hold]

As the title explains I'm having some problem with choosing the subject for my bachelor thesis. I'm studying the IT-Security programme at BTH, Sweden.

I've given it some thought myself (of course) and I just can't come up with something specific. The thoughts that has been rolling is something in the way of how security policies (regarding information security) affect companies or how key exchange is made out and if it can be picked up...

I'd be glad with any suggestion at all since I'm having a hard time figuring something out myself.

Best regards, Daniel