This is much worse than just installing adware. They install a web proxy which MITMs all web connections, including HTTPS by means of a pre-installed trusted root certificate. The root certificate is the same across all installs, and the private key is present on the machine (necessarily, to operate the proxy): https://twitter.com/fugueish/status/568258997578371072 Someone will extract the private key in the next few…
Here's Lenovo trying to justify the presence of this software, naturally oblivious to the security implications: https://forums.lenovo.com/t5/Lenovo-P-Y-and-Z-series/Lenovo-...
> To be clear, Superfish comes with Lenovo consumer products only and is a technology that helps users find and discover products visually. The technology instantly analyzes images on the web and presents identical and similar product offers that may have lower prices, helping users search for images without knowing exactly what an item is called or how to describe it in a typical text-based search engine.