I'm confused as to why this is a problem? Do people post 'sensitive' information on LinkIn? I thought it was a place to post your 'work & education' credentials. Unless someone hacks in to change another persons info, what is everybody worried about?

Edgar replies: Gert, the problem is (at least) two-fold. Many people use the same password on more than one site. So if I got your password from LinkedIn, it might work on Amazon, or with your debit card if it got stolen. The other problem is one of impersonation. If I got into your account, I could pretend to be you, and send email to your colleagues. One of the big scams going on now is someone pretends to be the boss at work, and directs subordinates to send money to someone or to pay a fraudulent bill. Presumably also, the crook could change the information in your profile and make you look like an idiot.