The company abused the Windows installer's anti-theft mechanism, which reads the firmware for executables at install-time, embedding a ton of crappy, insecure shovelware that would be added to your computer every time you reinstalled the OS. I'm a Lenovo user, though none of this affects me: I always take the Lenovo-supplied drives out of my Thinkpads, swap in an SSD and install Ubuntu GNU/Linux. But it's pretty gross nevertheless. Based on this, I wouldn't recommend Lenovo to Windows users, if I knew any. Lenovo eventually offered a removal tool. This is the second time this year they got caught pre-loading...