A browser extension called SellHack will allow you to see nearly any LinkedIn user’s email address, Alyssa Bereznak writes. The tool, which works with the Chrome, Firefox and Safari browsers, doesn’t actually hack into LinkedIn’s secure data; it uses an algorithm to search the Web for detailed public information about the person whose profile you’re viewing.
SellHack is easy to use, but it comes with a catch: It will also monitor what you do on LinkedIn and collect information about your direct connections. And it’s unclear what the people behind the extension are doing with this information once it’s collected.
— Adapted from “This Sneaky Tool Will Let You See Anyone’s Email Address on LinkedIn, But There’s a Catch,” Alyssa Bereznak, Yahoo.