HackingTechnologyInformationStolen CredentialsCustomer Data InvolvedCredentialsIdentity (basic)LowActive

MyFitnessPal, Inc.

bd_b68489de0920def6 · schema v1 · pii pii-v1

Severity

Low

Discovered

Mar 25, 2018

Filed

Mar 29, 2018

To disclose

4 days

Affected

Not disclosed

Confidence

64%

Full breach record for MyFitnessPal, Inc. →

MyFitnessPal (owned by Under Armour) disclosed that an unauthorized party acquired user account data, including usernames, email addresses, and hashed passwords, during February 2018. The company became aware of the incident on March 25, 2018. No government-issued identifiers or payment card data were involved. The investigation is ongoing, and users are required to change their passwords.

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California clockDiscovered Mar 25, 2018 → Notified Mar 29, 20184d ✓ CA 60-day OK4 days discovery → filing

Incident timeline

undetected · 52 days

discovery → filing · 4 days

Feb 1, 2018

Begins

Mar 25, 2018

Discovered

Mar 29, 2018

Filed

vs. sector median

18 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: UNDER ARMOUR, INC.
norm: under armour
Domain: underarmour.com

Name: MyFitnessPal, Inc.
norm: myfitnesspal
Domain: myfitnesspal.com
Industry: Technologyllm

Discovered: Mar 25, 2018
Breach occurred: Feb 1, 2018 – Feb 28, 2018
Undetected for: 52 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 29, 2018
Affected individuals: Not disclosed
Data types: CredentialsIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified and coordinating with law enforcement authorities

During the incident: Working with leading data security firms to assist in our investigation
Notified and coordinating with law enforcement authorities
Requiring MyFitnessPal users to change their passwords
Continuing to monitor for suspicious activity
Making enhancements to our systems to detect and prevent unauthorized access to user information
Changes made: Making enhancements to our systems to detect and prevent unauthorized access to user information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 days(4 days from discovery to filing)
Compliance flags: CA 60-day OK · 4d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Mar 25, 2018
→ Notified: Mar 29, 2018
4d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Mar 25, 2018 → Notified: Mar 29, 2018	4d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://oag.ca.gov/ecrime/databreach/reports/sb24-134903
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 29, 2018
Raw hash: 4bb2925f07768f4b2ae7a695456c70fbc439fcc746ead8c78df149d2be34bb92

Reporting entityUNDER ARMOUR, INC.

Victim entityMyFitnessPal, Inc.

Incidentdiscovered Mar 25, 2018

Stated responseWorking with leading data security firms to assist in our investigation

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov