Years

Data breaches by year

Each year’s breaches on the tracker, the largest first. This year so far is in State of Data Breaches 2026.

From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Official registers · Corrections and changes · Accuracy audit · For journalists · Found a mistake? Tell us and we correct it.