If malware is any piece of software that gets into your computer through stealth means – even if it’s a premier operating system – then Windows 10 fits the definition. Microsoft has been very aggressively asserting its self-imposed deadline of July 29 for free upgrades from Windows 7 and 8.1. And if it hasn’t been yet, you may find your computer hijacked and converted into a Windows 10 machine – whether you give permission or not.