Hackers love LinkedIn because it links them in—straight through the portal of the targeted company. Geez, how much easier could this be, what with all the publically-exposed e-mail addresses of key players (and also worker bees) in big companies that someone wants to hack.
An article on blog.sungardas.com was written by a white-hatter (his job is to try to hack his clients’ systems so that they know how to make them more impenetrable to the bad guys). The author says he’d make a beeline to Linked