AV-TEST Product Review and Certification Report – Mar-Apr/2024

During March and April 2024 we continuously evaluated 17 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. Further information on the compliance of this test with the AMTSO standard can be found here.

Defender Antivirus (Consumer)

Version	4.18
Platform	Windows 11 Professional (English), (64-Bit)
Report	241213
Date	Mar-Apr/2024

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Protection

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

	Industry average	March	April
Protection against 0-day malware attacks, inclusive of web and e-mail threats (Real-World Testing) 316 samples used	99.5%	100%	100%
Detection of widespread and prevalent malware discovered in the last 4 weeks (the AV-TEST reference set) 19,228 samples used	100%	100%	100%
Protection Score	6.0/6.0

Performance

Average influence of the product on computer speed in daily usage
More information

	Industry average	Standard PC	Industry average	High end PC
Slowing-down when launching popular websites 65 websites visited	23%	19%	21%	13%
Slower download of frequently-used applications 25 downloaded files	1%	0%	1%	0%
Slower launch of standard software applications 70 test cases applied	9%	10%	5%	7%
Slower installation of frequently-used applications 24 installed applications	15%	22%	16%	26%
Slower copying of files, locally and in a network 9,828 files copied	3%	1%	4%	0%
Performance Score	6.0/6.0

Usability

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

	Industry average	March	April
False warnings or blockages when visiting websites 500 samples used	0	0	0
False detections of legitimate software as malware during a system scan 1,017,422 samples used	2	0	0
False warnings concerning certain actions carried out whilst installing and using legitimate software 20 samples used	0	0
False blockages of certain actions carried out whilst installing and using legitimate software 20 samples used	0	0
False warnings concerning certain actions carried out whilst installing and using legitimate software 20 samples used	0	0
False blockages of certain actions carried out whilst installing and using legitimate software 20 samples used	0	0
False warnings concerning certain actions carried out whilst installing and using legitimate software 30 samples used	0	0
False blockages of certain actions carried out whilst installing and using legitimate software 30 samples used	1	0
Usability Score	6.0/6.0