Currently Being ModeratedJun 24, 2013 2:01 PM (in response to Ricky_ok)
I can't imagine any advantage to buying a charger off eBay. You can't save that much money over a genuine, new, Apple dock. If it were mine I would return it.
It's probably just defective, not evil. There has been one hack attack on iPhones through a modified charger, but this was a demo at a university, and the details were not published. It has not been seen in the wild.