Microsoft Defender's performance in the latest antivirus evaluation tests was not the best. In AV-Comparatives' tests researchers saw no improvement in Defender in its latest test, while AV-TEST found that Defender fell behind in performance tests.
However, it's not all bad for Microsoft, as AV-TEST found that Defender did exceptionally well in the Advanced Threat Protection Test Against Ransomware in February 2022. In both home and business tests, Microsoft Defender was one of the best programs for detecting and blocking ransomware.
See what AV-TEST's advanced ransomware tests say:
Advanced Threat Protection tests provide vendors and users with meaningful findings on how secure a product can protect against ransomware in real-world scenarios.
The products must successfully defend against ransomware in 10 different scenarios on Windows 10. The tests include threats such as files containing hidden malware, PowerPoint files with malicious scripts, or HTML files with malicious content.
The 12 products tested in the home user category:
Avast AVG Bitdefender F-Secure Ζ ΣΤΟΙΧΕΙΑ K7 Computing Kaspersky Microsoft Μικρόκοσμος NortonLifeLock PC Matic VIPRE Security
The 14 products tested in the business category:
Acronis Avast Bitdefender (two versions) Comodo F-Secure G DATA Kaspersky (two versions) Microsoft Seqrite Symantec Trellix (McAfee) VMware
The images below show how Defender performed for home users in the 10 test scenarios. Defender was able to detect the infection in the first phase in all but one case.
Meanwhile, Microsoft Defender's performance was even more impressive in enterprise testing, detecting the infection in the initial phase in all 10 scenarios tested.
You can view reports for all security products at official website of AV-TEST.