Breach Census
Breach Census is a global, entity-centred register of confirmed cyber attacks and data breaches, built from published regulator filings — US state attorneys general, HHS OCR, SEC EDGAR, ICO, CNIL, FCA/PRA — court records and company disclosures, with every confirmed incident backed by a citable source; leak-site claims are tracked separately and stay unverified until corroborated.
A global, entity-centred register of cyber attacks and data breaches
Sites in the directory combined: deployed 1,231 times in the last 30 days across 106 sites.
How this is measuredGallery
What is Breach Census?
claim < press < self_report < regulator < court — an incident is marked confirmed, and only then indexed, once at least one event reaches self_report, regulator or court; a bare claim or press report never confirms one on its own.
Key facts
- Category
- Tech/AI
- Languages
- English
- Measured size
- 6,196+ pages
- Website
- breachcensus.com
5,837 → 6,196 pages measured, 30 Sep to 25 Oct
| Date | Pages |
|---|---|
| 2026-09-30 | 5,837 |
| 2026-10-10 | 6,026 |
| 2026-10-18 | 6,115 |
| 2026-10-25 | 6,196 |
Is Breach Census ready for AI search?
Each line reads one entry in the collection's own records, not a claim by the site.
What's Inside
- Organisations
- Sectors
- Countries
- Attack types
- Regulators
- Largest breaches
- Weekly report
Explore Breach Census
The main sections, straight from the site's own index.
Latest from Breach Census
Straight from the site's own feed. Subscribe (RSS)
Sample Content
A selection of what you'll find inside Breach Census.
Who Is This For?
AI model wikis, open source model directories, blockchain intelligence, and the AI tool bible — the definitive reference layer for the technology era.
Frequently Asked Questions
What is Breach Census?
Breach Census is a global, entity-centred register of confirmed cyber attacks and data breaches, built from published regulator filings — US state attorneys general, HHS OCR, SEC EDGAR, ICO, CNIL, FCA/PRA — court records and company disclosures, with every confirmed incident backed by a citable source; leak-site claims are tracked separately and stay unverified until corroborated.
What languages does Breach Census support?
Breach Census is available in English.
Does Breach Census publish an llms.txt?
Yes. Breach Census publishes an llms.txt at https://breachcensus.com/llms.txt; the collection's nightly check last saw it on 25 Oct 2026.
Who runs Breach Census?
Breach Census is part of the Tonvin Collection, a family of expert knowledge websites.
Details
- Website
- breachcensus.com
- Category
- Tech/AI
- Languages
- English
- Pages
- 6,196+
- Confirmed incidents
- 20,737+
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