I recently bought an Acer laptop (I know it's not a pc, but I don't believe it's that relevant), and It came with McAfee LiveSafe pre-installed because of some sort of partnership between them, along with other Acer software. Now, i've never been much of a fan of "Antivirus" software because they have always caused my PCs to slow down. I thought i'd make an exception since it was already there, so I was actually thinking of buying a lifetime subscription because there was an insane discount on McAfee for new Acer laptops https://speedtest.vet/ . As expected, McAfee started messing up with my files on the first week. It already botched up the wifi driver, messing with the ports, and then kept deleting the exe file of a game I installed on steam. I thought it was because I haven't updated the laptop since I bought it, which might or might not have fixed the wifi problem. I'm still reluctant on keeping it, but I bought this laptop for college, which means I'm going to be going on a lot of websites and downloading a lot of files.