Windows 11's built-in Microsoft Defender Antivirus has reached parity with third-party products in independent lab tests. For a home user with careful browsing habits, Defender plus SmartScreen browser protection provides genuinely adequate defense.
Premium antivirus adds meaningful value beyond detection: ransomware rollback, dark web monitoring, password managers, and VPN. The case for upgrading is strongest if you handle sensitive financial data, have children using the device, or want protection features beyond malware scanning. ESET NOD32 offers the lightest performance impact; Bitdefender Total Security provides the richest feature set.
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