An adware called Superfish is making big waves currently on the Internet after news spread that PC manufacturer Lenovo shipped some -- it is still not clear which devices are affected -- consumer PC models with the software preinstalled.What is Superfish?
The core purpose of Superfish is to display advertisement to users based on what they are looking at in web browsers. It injects advertisement on web pages that users visit in browsers.
While that is bad enough, it is only part of the reason why Superfish is universally condemned currently. What is even more problematic than that is that the program installs a root certificate on the system. This is done by the software to gain access to https traffic as well, something which it would not otherwise be capable of.