insomnia
RansomwareAbout the group
Insomnia is a data-theft and extortion group that emerged in October 2025, targeting primarily US-based healthcare organizations — stealing patient files and threatening public exposure rather than encrypting files — and avoiding former Soviet states, consistent with Russian-speaking cybercrime norms.
Exploited vulnerabilities
No CVEs attributed to this group in public sources (MITRE ATT&CK). Absence of attribution does not mean absence of activity.
Impact and victims
The group insomnia has 1 known ransomware victims. See the most affected sectors and countries and recent victims.
1known victims
1in Brazil
1sectors hit
Most attacked sectors
Professional Services1
Most affected countries
🇧🇷 Brasil1
Recent victims
Chiarottino
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