Best Antivirus for PC in 2026
Windows is still the most targeted desktop OS, so a dedicated antivirus earns its place more clearly here than anywhere else. These are the suites with the strongest independent lab results right now.
01Read review
Bitdefender Total Security
Tops our rating for a reason: strong AV-TEST and AV-Comparatives scores paired with one of the lighter footprints on Windows.
02Read review
Norton 360 Deluxe
A firewall you can actually configure beyond Windows defaults, plus cloud backup for ransomware peace of mind.
03Read review
Kaspersky Plus
Consistently high protection scores with a lighter system footprint than several bigger-name suites.
04Read review
ESET NOD32
A minimal-footprint option well suited to older PCs that still need real-time protection without the extras.
FAQ
Is Windows Defender enough on its own?
It covers a reasonable baseline, but third-party suites generally add a configurable firewall, ransomware rollback and better phishing detection tuned to current scam patterns.
Which PC antivirus has the least performance impact?
ESET and Bitdefender consistently post the lowest performance-impact scores in independent lab tests among the products above.
Should I run two antivirus programs at once?
No, running two real-time scanners simultaneously usually causes conflicts and can slow a PC down more than either alone. Pick one primary scanner.