Chris wants to know if he really needs Webroot and Windows Defender. Leo says he doesn't need Webroot at all, and it's likely they paid the computer company to put it on. He should free to uninstall it. Windows Defender will do a great job and it comes free with Windows 10.
Bob has noticed that Leo hasn't been advocating for antivirus software lately, and his subscription is expiring. Should he renew it? Leo says that most malware hacks are Zero Day now, and security programs aren't really effective against them. Antivirus software even can cause problems. In general, antivirus software isn't really worth subscribing to. Windows Defender is free and offers protection that is perfectly fine. The best defense is his online behavior, and keeping the OS updated.
Janet is worried that she needs to clean up her system and have a separate antivirus system. Leo says no. You don't. You don't need a third party cleaner and you don't need a separate AVS app. Windows Defender is just fine and it comes with Windows 10 for free. But even the best AVS isn't going to protect you against your own online behavior.
Al's antivirus software is up for renewal. Does he really have to pay for another year? Leo says no. Windows has its own antivirus called Windows Defender, and it's free. It does a really good job. There's also a possibility that third party antivirus software could make him more vulnerable to hackers, not less. Al will need to download their standalone uninstaller to get rid of that third party app. Then enable Windows Defender and keep it up to date. But he should remember, no antivirus can protect him from himself.
John bought an 9.7" iPad Pro. It came with antivirus software. Does he need it? Leo says absolutely not. In fact, it won't even work. Apple's iOS software sandboxes everything and Apple has to approve all apps, so unless he jailbreaks his iPad, he is completely secure. So he should throw away that AVS because he doesn't need it.
Joe wants to know how effective antivirus software is. Leo says it can work, but it really does give users a false sense of security. Zero Day exploits can still nail people within 24 hours of discovery. They can also expose people to more flaws. That doesn't mean Joe shouldn't have one, though, but Leo recommends not buying anything third party. He should stick with Microsoft's own Defender that comes with Windows 10. Ultimately, though, his online behavior is his last, best line of defense.
Intel has announced that the fix for the Spectre exploit can actually cause blue screens of death (BSOD) and crash your system unless you make sure everything is updated first — especially third-party antivirus. Leo says this is why it makes more sense to use Windows Defender and not use a third party app. They really do more harm than good.
Dean installed Norton but he's having trouble with it. Leo says that Windows 10 has Defender built in and it's probably running. Antivirus software won't work well when there's more than one antivirus installed. So Dean should remove the Norton one with the Norton Remove tool. If he has trouble using the removal tool, he should run in Safe Mode with Networking. That will prevent additional drivers from loading and should make it easier to remove it. He should also make sure he uses the right removal tool. Norton has several different ones depending on the utility it is.
Avast has installed something called "Grime Fighter" and it's taken over Scott's computer. What can he do? Leo says this is why he's not in favor of using third party antivirus software anymore. They give you a false sense of security and it can open up additional vulnerabilities. Leo suspects that Grime Fighter is not from Avast, but instead is pretending to be. At this point, the only thing you can really do is back up your data, format your hard drive, and reinstall Windows from a known good source. And if you must have an AVS, use Microsoft's own Windows Defender.