I think there is a defect in MacBook Air that allows these pop-ups and other issues. I used a MacBook Pro for 15 years and did not have these issues. I got a MacBook Air 15-inch in July 2023 with 512GB upgraded storage, not long after the 15-inch MacBook Air was released. It's been nothing but problems. I was inundated with McAfee pop-ups soon after getting it, and soon after I had multiple issues with the computer stalling, running slow, screen randomly darkening and lightening, etc. Three times in less than 3 months I went into an Apple store and they erased the software and reinstalled it, saying it was fixed. Within hours of using it, I'd have the same problems starting up again. On my fourth visit, they gave me a new MacBook Air 15-inch. I've been using it for about three days, and today the McAfee pop-ups appeared, and I know it will only get worse from here. I was told MacBook Air and MacBook Pro are using the same Safari software and it's not the software. Then what is it? There are known issues with hardware on the new 15-inch MacBook Air. I don't know about earlier Air models. How is it I can go 15 years without pup-up and other problems on a MacBook Pro but on a MacBook Air I can't get rid of the problems. I loved my MacBook Pro, but I think my MacBook Air is an awful computer in comparison due to the constant pop-ups and other issues. Apple needs to fix the issues with MacBook Air, maybe a recall to fix. There are complaints like this all over the internet about the MacBook Air. I don't think I'll be a MacBook Air user long. Sad!