I only use malwarebytes on my desktop pc for over a year now and I'm still not having any issues, windows defender is good but slow and doesn't remove what it supposed to remove.Its how you use you computer: What you download/install, sites you visited. Pro tip here "Never trust the Cyber world, everything can be hack or compromised" so be careful on free toolbars, free games, free PC tune up, and free software's there's a reason why they're free. As the only tech person in the house, this is how I protect our computers.