Independent testing shows that Microsoft Defender is the best free antivirus in October 2021

Windows users often wonder if Microsoft Defender, Microsoft’s free and built-in antivirus application, is enough to protect them from Internet dangers, especially when many laptops Handsets that come with other apps like McAfee or Kaspersky tend to start asking. for a 6 month subscription fee down the line.

By independent testing service Check AV, the answer is that Microsoft Defender is just as good as the paid versions and of course completely free.

They found it blocked 100% of zero-day malware attacks from the Internet, including malicious websites and emails, and also detected 100% of common and frequent malware. in the past 4 weeks.

They also found that it had less of an effect on website loading than other antivirus apps, although it seemed to interfere more with app installation.


When compared to other big-name antivirus apps like Kaspersky, McAfee, AVG and Avast, Microsoft Defender continues to be significantly faster, which is often one of the main reasons why users prefer to go with the native solution. on their PC.

Slow down when accessing popular websites Standard PC High-end PC
Microsoft Defender -7% -5%
AVG -16% -9%
Avast -39% -17%
McAfee -21% -ten%
Kaspersky -26% -13%

I’m sure our readers agree that it’s unreasonable to have anti-virus software on your PC that reduces browsing speed by almost 40%.

Full results can be seen here.

Does this information make your readers rethink their antivirus options? Let us know below.

via Winfuture Independent testing shows that Microsoft Defender is the best free antivirus in October 2021


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