Confirmed breach

Gym Management Service data breach

USUnited States · Gym Management Service Inc

Gym Management Service (United States) notified the Indiana Attorney General and the California Attorney General of a data breach on 13 January 2026. It affected 9,810 people. The breach began on 25 July 2025, 172 days before it was reported.

Status: Confirmed breach
People affected: 9,810 people
Reported: 13 January 2026
Breach began: 25 July 2025
Time to tell: 172 days (the median in California’s notices over the last year: 154 days)

What was exposed

The register’s list does not say what was exposed; the notice it links to (under Sources) usually does.

Sources

Official notices are read by code from the regulator’s own register. More notices to Indiana, California. · Corrections and changes

If Gym Management Service had your data

Look for Gym Management Service Inc’s own notice or letter: it should say what of yours was involved. Keep it.
The register’s list does not say what was exposed; the notice it links to (under Sources) usually does. If Gym Management Service Inc has a password of yours, change it now to be safe.
Expect scams that use your details: calls, texts or emails pretending to be Gym Management Service Inc, your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.

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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 · Found a mistake? Tell us and we correct it.