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.
This group has 52 victims. The victim list API is currently responding slowly for this dataset. Country, sector, and infostealer breakdowns are not available at this time. Basic stats (victim count, first/last seen) are shown above from a faster data source.
Don't let email issues hurt your business reputation.
Our cybersecurity team helps you fix SPF, DKIM, DMARC and protect your sender reputation. Get a free 30-minute consultation with a security expert.
