A new tool called Sell Hack claims it allows anyone to see the email address of a LinkedIn user. We contacted LinkedIn about it this morning and the company responded in the evening to say the company’s legal team is delivering a cease and desist letter to Sell Hack “as a result of several violations.”

“LinkedIn members who downloaded Sell Hack should uninstall it immediately and contact Sell Hack requesting that their data be deleted.” Krista Canfield, LinkedIn’s Senior Manager of Corporate Communications, told TNW in a statement. “We advise LinkedIn members to protect themselves and to use caution before downloading any third-party extension or app. Often times, as with the Sell Hack case, extensions can upload your private LinkedIn information without your explicit consent.”

linkedin sell hack LinkedIn sends cease and desist to Sell Hack, which lets you see anyones email address on the service

While the violations in question were not listed, it’s obvious Sell Hack isn’t a legitimate tool. According to Yahoo Tech, which first reported about it, installing and using the extension to view anyone’s email address takes just a few steps.

We have asked LinkedIn if the company is doing anything else aside from mobilizing its legal team. While Sell Hack is clearly up to no good, this type of trickery shouldn’t be possible in the first place.

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