LinkedIn phishing vulnerability
sigkill.dk
sigkill.dk
A few weeks ago I was working on the linkedin api and I noticed that if I was sending messages to multiple contacts, they would all see each other's email on cc instead of ccn. I reported this to the team and I hope it's fixed by now. It's not a big deal, but it's a way to know the email address of all your contacts.
The weak part is that your LinkedIn account gets associated to an extra email address without your express consent. (allegedly, since I haven't tried this)