Windows Defender also gets it's updates at the same time as the rest of Windows 10 operating system updates. So if a new threat emerges then you can expect Defender to download an update fairly rapidly as soon as Microsoft develops a remedy. Windows Defender checks for definition updates several times daily when online. Microsoft is a member of the ICSA so they share threat data with all the other AV vendors. In today's threat environment the user really has become the weakest link. See CyberCapture and Behavior Shield (real-time process monitoring) if you're curious on how our technology goes way beyond basic protection and signatures ) We have technology specifically to watch for this - layers within layers if you will - to prevent I'd have a lot of concerns though, especially the ' no click happy users' part!

Our job is to help keep people protected! So if Defender is the only option, It's a security layer I'd keep in place. If they are click happy you might want something that allows you to enforce AV requirements. For OP, as long as you have other perimeter defenses, are using the Windows firewall on all your machines, don't have click happy users, don't run users as local admin, and don't mind the lack of central management and reporting, I suspect Defender on Windows 10 combined with periodic MalwareBytes full scans is sufficient.

Should i run windows defender and avast