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Ransomware Tracker Leaks

RANSOMWARE TRACKER

Tracking the real-world impact of ransomware attacks across organisations, municipalities and critical sectors — explained for leaders, not just IT.

■ Maintained by Jan Kaastrup, cyber investigator & author

29010
Tracked incidents
1164
Last 30 days
284
Active groups
78
Danish targets
📅 Data from 01/01/2022 to 30/07/2026 ↻ Last updated 30/07/2026 01:51

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This site aggregates and curates publicly available threat material. CTI Threat Cloud from CSIS does the same — as a managed service with real-time data, broader source coverage and integration into your security infrastructure.

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Incident details including company names are only available to authenticated users.

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No account? Contact Jan Kaastrup.

This tracker is maintained by Jan Kaastrup — a cyber investigator who has worked 200+ ransomware cases. The goal: make attack data understandable for leaders and journalists, not just security analysts.

Read more about Jan →

If you have information about a ransomware incident — especially in Denmark or the Nordics — please reach out.

Contact Jan