When you're watching TV ... you probably don't think someone could be on the other side watching you back. An alarming security flaw in Samsung's Smart-TVs makes this scenario possible. LAURIE SEGALL [CNN Money/Technology Correspondent]: We've spoken to a lot of folks and they're saying there are major vulnerabilities. YAVOR: One of the things we were able to do with the Smart-TV platform was abuse the browser so that we could actually gain access to the camera that's built into the TV. What we can prove here is that with a little bit of extra code, we can turn the camera on in your browser. This is something we can do invisibly and actually have it run behind the web page you're looking at. I could be sitting at a laptop in a cafe in Paris, and as long as I have a web connection, I would be able to get into your TV and access your camera. AARON GRATTAFIORI [security consultant]: The scary thing about it is that it doesn't give an indication that the camera is on and there is no LED that shows up when the camera is on. So they could actually be watching you and you would never even know. SEGALL: What is a Smart-TV, and why is it a playground, essentially, for hackers? GRATTAFIORI: It's a computer. So instead of being a tube and some other electronics, now it has a web browser and it has a lot of devices running Linux.