The Data Breach Chronology
A structured database of U.S. data breach notifications, aggregated from 21 state and federal sources. 96,000+ records spanning 2005 to the present. Updated weekly. Maintained by Privacy Rights Clearinghouse.
Choose Your Access
-
Single User Access (Updated 2026-06-05)
Regular price From $250.00 USDRegular priceUnit price / perSale price From $250.00 USD -
Team Snapshot Access (Updated 2026-06-05)
Regular price From $350.00 USDRegular priceUnit price / perSale price From $350.00 USD -
Team Subscription Access (Updated 2026-06-05)
Regular price From $3,000.00 USDRegular priceUnit price / perSale price From $3,000.00 USD
Compare Access Options
Every purchase includes the complete database in SQLite, CSV, and Excel formats. All licenses permit commercial use and integration into products.
Single User ($450) — One person, one snapshot. The database as it stands when you purchase. Re-download your version anytime for a year.
Team Snapshot ($550) — The same point-in-time snapshot, but shareable across your entire organization.
Team Subscription ($4,500) — Weekly updates for a full year. Your download link always serves the latest data. Built for teams that need current breach intelligence or are integrating the data into a product.
Try Before You Buy
Download a 1,000-record sample in any format to evaluate the schema, field quality, and structure before purchasing.
What’s in the Data
Each record corresponds to a single breach notification filed with a government agency. 65 structured fields organized across 12 categories. Classification, entity normalization, and text extraction from breach notification letters are performed using automated natural language processing pipelines. All extracted values are derived solely from information present in the source documents.
Organization identity — Normalized name, type (7 top-level categories, 86 subtypes), and acceptable name variants for consistent entity tracking across the database.
Breach classification — Type (7 categories, 36 specific methods), incident narrative, and third-party vendor identification when a breach originated at a service provider.
Impact — Total and state-resident affected counts. Personal information exposed, classified against 13 CCPA information categories.
Dates and timeline — Reported date, breach date, and breach end date where available.
Location — Full address and geocoordinates (latitude/longitude) for spatial analysis.
Corporate identifiers — Links to SEC EDGAR (CIK + ticker), GLEIF LEI, NPI registry, IRS EIN, IPEDS, FDIC, NCUA, and Census Bureau where matches exist.
Breach event grouping — When the same breach generates notifications across multiple states, or a shared vendor compromise affects hundreds of organizations, those records are linked by a stable group UUID with pre-computed event-level aggregates: combined totals, merged timelines, per-organization breakdowns, and vendor event identification. No joins required.
Source documentation — Original filing URL, archived notification letter URL, and full extracted notification letter text (SQLite format only).
Full field documentation is included with every purchase.
Explore the Data
Used by Researchers Worldwide
The Data Breach Chronology is used by researchers at more than 250 institutions across 26 countries — from economics departments modeling supply chain risk to law schools studying enforcement gaps. Privacy Rights Clearinghouse has tracked data breaches since 2005 and educated consumers about their rights for more than thirty years.
Purchases of the database directly support continued development and maintenance of this resource. Privacy Rights Clearinghouse may be able to provide fee waivers for researchers conducting unfunded academic work that advances consumer privacy. To apply, please submit your request to [email protected].