Monthly archive
Every organisation named in a cyber incident first reported in October 2026, newest first, each linked to its sources.
Organisations named, October 2026
Plus 196 breach notices filed with US regulators, counted apart.
Updated 13 Nov 2026, 10:47 UTC, 32 of 36 sources answering. History from 13 Nov 2025.
Leak-site claims tracked by RansomLook (ransomlook.io), CC BY 4.0, enriched by Black Shard. Company filings from SEC EDGAR (sec.gov). Breach reports from the US Department of Health and Human Services Office for Civil Rights. Data security breach reports from the Texas Attorney General. Data security breach notices from the California Department of Justice. Data breach notices from the Delaware Department of Justice (data.delaware.gov). Security breach notices from the Vermont Attorney General.
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