I suppose Sony Interactive Entertainment is different from Sony Music, but once upon a time Sony thought that, if you had the audacity to play one of their CDs on your PC, it'd be a good idea for them to install a rootkit on your computer. After the initial outcry, they released a tool that purportedly removed the rootkit but in reality simply hid it.
https://en.wikipedia.org/wiki/Sony_BMG_copy_protection_rootk...