I tested each scan by downloading an archive containing 1,000s of malware samples and hiding them on my Windows 11 PC. Microsoft Defender offline scan - Scans your computer for hidden malware such as rootkits without starting your operating system.

Custom scan - Scans selected files and folders for malware.Full scan - Scans your entire computer for malware threats.Quick scan - Scans for malware in critical system folders.The malware scanner includes 4 types of malware scans: It uses a massive malware database, machine learning, and heuristic analysis to detect new and emerging malware threats, including trojans, worms, cryptojackers, and rootkits. Windows Defender includes a pretty good malware scanner. Windows Defender Security Features Malware Scanner Again, Norton can do everything Windows Defender can, but it adds a password manager, VPN, dark web monitoring, system optimization tools, identity theft protection for US users, and much more. It’s the best premium antivirus in 2023, and while it doesn’t offer a free plan, it includes a 60-day money-back guarantee. It can do everything Windows Defender can, but it also includes a performance optimizer, password manager, secure browser, and more. If you want a free antivirus with more features than Windows Defender, you should try Avira Free Security instead. Windows Defender provides all of the fundamental security features to protect you in 2023, but it lacks many worthwhile extras like a VPN and identity theft protection.

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