There's a scam going around where people are sent an email saying that a hacker knows they've visited a porn site and has video of you reacting. To make the email credible, it includes a real password that you've used. That password was probably used on a hacked site and the scammer got it on the dark web. But what they don't know whether you've been to a porn site and don't have any video of you reacting. CBS News Technology Consultant Larry Magid has today's "Eye on Tech."