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The best antivirus software for Windows Home User

Download as PDF AV-TEST Product Review Report – Nov-Dec/2013
Version 4.3
Platform Windows 8.1 (64 bit)
Report 134957
Date Nov-Dec/2013

Windows Defender

During November and December 2013 we continuously evaluated 25 home user security products using their default settings. We always used the most current publicly-available version of all products for the testing. They were allowed to update themselves at any time and query their in-the-cloud services. We focused on realistic test scenarios and challenged the products against real-world threats. Products had to demonstrate their capabilities using all components and protection layers.


Protection against malware infections
(such as viruses, worms or Trojan horses)

November December Industry average
Protection against 0-day malware attacks, inclusive of web and e-mail threats (Real-World Testing)
110 samples used
64% 76% 94%
Detection of widespread and prevalent malware discovered in the last 4 weeks (the AV-TEST reference set)
19,604 samples used
91% 93% 96%
Protection Score


Average influence of the product on computer speed in daily usage

November December Industry average
Use cases: visiting websites, downloading software, installing and running programs and copying data
5 samples used
3s 5s
Performance Score


Impact of the security software on the usability of the whole computer
(lower values indicate better results)

November December Industry average
False warnings or blockages when visiting websites
500 samples used
0 0 0
False detections of legitimate software as malware during a system scan
748,693 samples used
0 0 4
False warnings concerning certain actions carried out whilst installing and using legitimate software
42 samples used
0 0
False blockages of certain actions carried out whilst installing and using legitimate software
42 samples used
0 0
Usability Score