Trojans were found to be the most widely chosen tool for cybercriminals to infiltrate Windows systems in 2019, according to AV-Test. As of the measured period, trojans accounted for 64.31 percent of all malware attacks on Windows systems, followed by viruses at 15.52 percent.
Distribution of leading Windows malware types in 2019
Characteristic
Percentage of malware
Trojans (general)
64.31%
Viruses
15.52%
Worms
7.97%
Backdoors
5.7%
Others
0.96%
Password Trojans
2.81%
Crypto miners
1.82%
0%10%20%30%40%50%60%70%80%
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AV-TEST. (August 26, 2020). Distribution of leading Windows malware types in 2019 [Graph]. In Statista. Retrieved June 07, 2025, from https://www.statista.com/statistics/221506/share-of-new-types-of-malware/
AV-TEST. "Distribution of leading Windows malware types in 2019." Chart. August 26, 2020. Statista. Accessed June 07, 2025. https://www.statista.com/statistics/221506/share-of-new-types-of-malware/
AV-TEST. (2020). Distribution of leading Windows malware types in 2019. Statista. Statista Inc.. Accessed: June 07, 2025. https://www.statista.com/statistics/221506/share-of-new-types-of-malware/
AV-TEST. "Distribution of Leading Windows Malware Types in 2019." Statista, Statista Inc., 26 Aug 2020, https://www.statista.com/statistics/221506/share-of-new-types-of-malware/
AV-TEST, Distribution of leading Windows malware types in 2019 Statista, https://www.statista.com/statistics/221506/share-of-new-types-of-malware/ (last visited June 07, 2025)
Distribution of leading Windows malware types in 2019 [Graph], AV-TEST, August 26, 2020. [Online]. Available: https://www.statista.com/statistics/221506/share-of-new-types-of-malware/
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