Users who prioritize the highest possible detection rates. 5. The Second Opinion: Malwarebytes
Most users who want a "set it and forget it" experience. 2. The Best Overall: Bitdefender Antivirus Free
Finding a solid free antivirus doesn't mean you have to settle for "lite" protection. Many of the top security firms offer free versions of their software that use the exact same malware detection engines as their paid suites. 1. The "Built-in" Choice: Microsoft Defender Free Antivirus Software You Can Protect Yourself With
Bitdefender is consistently ranked at the top of independent lab tests for malware detection.
Never install more than one "real-time" antivirus at once (e.g., Bitdefender and Avast together). They will fight over system resources and actually make you less secure. Users who prioritize the highest possible detection rates
Deeply integrated into the OS, low system impact, and no annoying pop-ups to "upgrade."
Excellent at catching "zero-day" (brand new) threats and fileless malware. low system impact
Includes extras like a password manager and web shields that block malicious URLs.