| The best anti malware on any version of windows has always been to make your default account you use everyday a non admin account. You also need to create a separate account (can just be a local account) that is a full administrator. Make sure you use a different password. Anytime you need to install something or run powershell/CMD as admin it will popup and ask for the separate login of the admin account. This is basically the default of how Linux works (sudo). It's also how any competent professional IT department will run windows. If an admin elevation popup happens when you haven't triggered it then you probably know something is wrong. And most malware will not be able to install. Another benefit is that you can use a relatively normal (but obviously not too short) password for your regular account and then have something much more complicated for the admin login. This is especially great on something like "Grandmas PC" or anyone who is at higher risk of clicking on the wrong thing. |
Malware can still do a lot without "installation". Running as an unprivileged user, it can still do anything to/with the filesystem that the user would be able to do, and will (on most normal setups) be able to make outbound Internet connections without limitation. In short, these kinds of privileges don't protect against data exfiltration, ransomware operating on the user's important data files, simple vandalism....