Best antivirus software for Windows 2025, tried and tested

For the past two decades, antivirus software has become a familiar presence for anyone using a PC. The barrage of advertisements warning users about potential risks and the necessity of updates has made it clear: computer security is paramount. While Windows 11 comes equipped with its own built-in security features, many users find that third-party antivirus solutions offer an enhanced sense of protection. These alternatives often provide quicker updates, a wider array of options, and additional features such as VPNs, browser plugins, and dedicated tech support in case of issues.

A significant aspect of maintaining computer security lies in user behavior. It is crucial to exercise caution by avoiding links from unknown email senders and refraining from executing downloaded applications from unverified sources. Additionally, the practice of reusing passwords can expose users to unnecessary risks.

Whether concerns revolve around ransomware, spyware, or traditional computer viruses, the antivirus packages discussed here are designed to address these threats effectively.

How we tested

Our comprehensive evaluation process involved installing each antivirus application on a Windows 11 PC, fully updated with the latest security patches. To ensure a safe testing environment, we utilized specially crafted files from Eicar.org to simulate virus attacks and visited the Wicar.org antivirus test site to assess how well the applications responded to potential malware threats. Each product was then tasked with scanning the SSD of the Windows 11 PC, which contained a mix of applications, documents, and the operating system itself. We meticulously recorded the time taken for each scan and reviewed reports from independent security testing labs, including SE Labs and AV-Test, to identify which security packages garnered acclaim from experts in the field.

Why you can trust IndyBest reviews

IndyBest is committed to providing honest reviews and expert recommendations. Our dedicated team of editors and writers rigorously tests products to deliver reliable insights and practical advice. Ian Evenden, a seasoned writer and editor specializing in gaming, computing, science, and technology, has been contributing to IndyBest since 2021. His discerning eye for detail and commitment to high standards ensure that our tech reviews, including those on Chromebooks, keyboards, and VPN services, are both informative and trustworthy.

The best antivirus apps for 2025 are:

  • Best overall – BitDefender Total Security: £49.99 for the first year, available at Bitdefender.com
  • Best free option – Avira Free: Free, available at Avira.com
  • Best VPN bundle – Malwarebytes Plus: £49.99, available at Malwarebytes.com
  • Best for protecting lots of devices – Sophos Home Premium: £37.46, available at Sophos.com
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Best antivirus software for Windows 2025, tried and tested