State of Ransomware: December 2025
Published 1 January 2026 · ThreatVectr Intelligence
Ransomware groups claimed 802 attacks on organisations worldwide in December 2025, up 15% on the previous month's 700. 57 distinct groups posted at least one victim during the month, across 73 countries. The busiest single day was 24 December, with 54 victims listed.
Qilin was the most active operation of the month, claiming 175 victims — 22% of all listings. LockBit (69) and SafePay (59) followed. 4 groups appeared for the first time, including Minteye, Ms13089, Osiris, LockBit.
Manufacturing bore the heaviest targeting, with 121 claimed victims, ahead of Business Services (102) and Technology (92). By geography, United States accounted for 341 claims — 43% of the month — with Germany (38) and Canada (33) next.
Claims per day — December 2025
Most active groups
- 1Qilin·17522%
- 2LockBit32699%
- 3SafePay5597%
- 4Akira1577%
- 5Sinobi4547%
- 6Devman7466%
- 7DragonForce1354%
- 8INC Ransom4334%
- 9Coinbasecartel6223%
- 10Play5202%
First seen this month:Minteye, Ms13089, Osiris, LockBit
Most-targeted sectors
- 1Manufacturing121
- 2Business Services102
- 3Technology92
- 4Healthcare65
- 5Construction62
- 6Consumer Services47
- 7Financial Services43
- 8Agriculture and Food Production35
- 9Public Sector33
- 10Education27
Most-affected countries
- 1United States341
- 2Germany38
- 3Canada33
- 4France28
- 5United Kingdom22
- 6Italy21
- 7Brazil19
- 8Spain19
- 9India17
- 10Türkiye12
Every figure in this report counts a claim posted to a criminal leak site, observed via the monitoring service ransomware.live. A listing is an extortion tactic, not a confirmed breach: some claims are exaggerated, some are duplicates under new branding, and a few are outright false. Companies named in listings have not necessarily confirmed any incident, and ThreatVectr does not publish victim names from this dataset.
Cite this report
This report is free to cite and reproduce with attribution. Suggested citation:
ThreatVectr, “State of Ransomware: December 2025”, https://threatvectr.com/ransomware-tracker/reports/december-2025
Journalists and researchers: for questions about the data or methodology, contact the newsdesk.
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