MyFitnessPal Data Breach History

This page tracks the MyFitnessPal data breach history and cybersecurity incidents affecting MyFitnessPal. BreachHistory currently indexes 6 publicly disclosed or catalogued incidents spanning 2012 through 2026, with approximately 537.7 million records reported as exposed across all indexed events. These totals may include overlapping datasets or third-party estimates and should not be interpreted as unique affected users.

The MyFitnessPal breach timeline includes major data breaches, cyber attacks, data leaks, credential exposures, API abuse, and other security incidents. Each incident provides details on the estimated records exposed, attack method, affected data types, and supporting public sources. Currently, 0 incidents are company-confirmed.

Largest MyFitnessPal Data Breaches

The largest indexed incidents include the 2018 — MyFitnessPal: Feb, 150.0M records, the 2018 MyFitnessPal — 150M accounts, and the 2018 — MyFitnessPal: Under Armour says roughly 150 million MyFitnessPal…, along with additional historical incidents involving exposed passwords, public databases, and large-scale data scraping. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by MyFitnessPal or a regulator. Below is the list of large data breaches:

• 2018 2018 — MyFitnessPal: Feb, 150.0M records — about 150.0M records exposed · Catalogued incident
• 2018 2018 MyFitnessPal — 150M accounts — about 150.0M records exposed · Catalogued incident
• 2018 2018 — MyFitnessPal: Under Armour says roughly 150 million MyFitnessPal… — about 150.0M records exposed · Catalogued incident
• 2026 2026 Under Armour / MyFitnessPal — ~72.7M emails in HIBP reload (Jan) — about 72.7M records exposed · Catalogued incident
• 2018 2018 — MyFitnessPal: Hacking, 15,000,000 records — about 15.0M records exposed · Catalogued incident

What Information Was Exposed?

Depending on the incident, exposed data may include email addresses, passwords and login credentials, names, physical addresses, health and medical (PHI) records, and other personal information (PII). The exact data varies between incidents, so review each breach page before assuming your information was affected.

MyFitnessPal Data Breach 2026

At the time of this update, BreachHistory catalogues 1 2026 incident related to MyFitnessPal. Most recent entry: 2026 Under Armour / MyFitnessPal — ~72.7M emails in HIBP reload (Jan). New incidents are added as official disclosures, regulatory filings, or credible cybersecurity reports become available.

What To Do If You Were Affected

If you believe your account may have been involved in a MyFitnessPal data breach, change any reused passwords, enable multi-factor authentication (MFA), monitor your account for suspicious activity, and be cautious of phishing emails or fake breach notifications.

This MyFitnessPal breach history is maintained by BreachHistory using public disclosures, regulatory filings, security research, and clearly labelled third-party claims. For the complete breach timeline, records exposed, incident details, and AI Breach Risk Score, explore the sections on this page.