Seems that PayPal's security key isn't necessarily so secure. [A] user discovered a bug that makes the key useless in certain situations. By entering his valid PayPal login and password, answering a security question and entering ANY six-digit number, he can make a purchase. It is important to note that that PayPal and EBay have not been able to reproduce the error ...The entry above was written by Dan Goodin in San Francisco. I haven't met anyone who has one of these but it seems like a good idea especially if you think that their is someone out there watching every move you make.