Samsung isn't the only Windows PC maker to have hijacked Windows' update process as of late. Users have noticed that some Lenovo PCs running Windows 7 and 8 (such as the Yoga 3) had firmware that automatically downloaded and installed Lenovo's own update software on boot, overwriting a Windows system file at the same time. More disconcertingly, this was true even if you wiped the system clean. So long as you were reinstalling a compatible version of Windows in the first place (including Windows 10), those Lenovo apps would inevitably return.

http://www.engadget.com/2015/08/12/l...security-hole/