Why is adware dangerous?

Adware, or ad-supported software, could be quite harmless, or it could be aggravating, persistent, or even dangerous, when it leaves your PC open for threats. It all depends on the way you got it. Some free applications, like Skype, use embedded advertisements to cover the cost of development. The user downloads and uses this software for free. In exchange, he agrees to see ads during installation or when using the application. In this case advertisements only show inside the program when it's Read more [...]