significant ransomware attacks only; based on source's characteristics; wider industry metrics may wary
Supplementary notes
The source adds the following information: "The evolution of the number of major incidents and cyber defense operations does not illustrate the overall evolution of the threat level. These numbers are the result of the different levels of support provided by the ANSSI teams, which also rely on qualified security incident response service providers for the handling of incidents falling within their scope."
The source does not specify what is considered a significant attack.
Citation formats
Known major ransomware attacks in Europe 2021-2023
In 2023, 143 significant ransomware attacks were detected in Europe, marking a 31 percent increase from 109 known major ransomware attacks in the previous year. Meanwhile, the figures do not represent the overall number of ransomware attacks in the region. Furthermore, in 2022 small and medium enterprises (SMEs) remained the primary target for ransomware actors.
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ANSSI. (February 26, 2024). Number of reported cases of significant ransomware attacks in Europe from 2021 to 2023 [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 15, 2026, from /statistics/1398137/europe-major-cases-ransomware-attacks/
ANSSI. "Number of reported cases of significant ransomware attacks in Europe from 2021 to 2023." Chart. February 26, 2024. ÌÇÐÄÆÆ½â°æ. Accessed July 15, 2026. /statistics/1398137/europe-major-cases-ransomware-attacks/
ANSSI. (2024). Number of reported cases of significant ransomware attacks in Europe from 2021 to 2023. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 15, 2026. /statistics/1398137/europe-major-cases-ransomware-attacks/
ANSSI. "Number of Reported Cases of Significant Ransomware Attacks in Europe from 2021 to 2023." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 26 Feb 2024, /statistics/1398137/europe-major-cases-ransomware-attacks/
ANSSI, Number of reported cases of significant ransomware attacks in Europe from 2021 to 2023 ÌÇÐÄÆÆ½â°æ, /statistics/1398137/europe-major-cases-ransomware-attacks/ (last visited July 15, 2026)
Number of reported cases of significant ransomware attacks in Europe from 2021 to 2023 [Graph], ANSSI, February 26, 2024. [Online]. Available: /statistics/1398137/europe-major-cases-ransomware-attacks/