Exposed data archive

Browser user agent details data breaches

Public breach reports where browser user agent details were listed among exposed data types.

Breaches

1

Critical

0

Known affected

8,849,657

Latest report

9/29/2026

Tracked reports

Filter Tracker

High1h ago

Manchester Airports Group

Manchester Airports Group disclosed a breach in August 2026 in which the FulcrumSec hacking group stole and published data on approximately 8.8 million customers of Manchester, Stansted, and East Midlands airports.

Browser user agent detailsEmail addressesGeographic locations+5 more

8.8M