If you use another browser, you won't get the added protection of Windows' own phishing protection if you happen to end up on a scam website trying to steal your data. It's also effective at blocking phishing attacks, although only in the Edge web browser.

Without an internet connection, it can't do this and therefore doesn't have much to go on when choosing whether to block a program. There is a caveat to this, though it's only effective when your computer has an internet connection because it sends tiny fingerprints of suspect programs to its online database to see if it matches known threats. Our tests show that in some circumstances, it's an effective partner for keeping you safe online, but in others there's need for improvement.įirst, the good: its Smart Screen technology is very effective at blocking malware that tries to start running on your computer. There has always been a big question mark hanging over Windows Defender (part of what's now called Windows Security) and whether it's enough to keep your computer safe. Does Windows Defender offer enough protection?

Is windows defender a good antivirus