Best Free Antivirus 2025 Free. The best free antivirus in 2025: It prevented 100% of malware in.

Bitdefender antivirus free is the best free antivirus, with avg coming in at a close second. Currently, cnet’s top pick for the best antivirus software is microsoft defender, the tech giant’s free antivirus solution built into windows 10 and windows 11 machines.