HackingStolen CredentialsSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedIDENTITY_GOVERNMENTIDENTITY_BASICFINANCIAL_ACCOUNTMediumContained
T-MOBILE USA, INC.
bd_87a0f2b94d5a034f · schema v1 · pii pii-v1
Full breach record for T-MOBILE USA, INC. →T-Mobile USA, Inc. disclosed a security incident involving unauthorized access to a file stored on a third-party supplier's server. The file contained personal information including names, addresses, Social Security numbers, and Driver's License numbers. The incident was discovered in late November 2013. T-Mobile provided one year of complimentary credit monitoring through Experian's ProtectMyID Elite service to affected individuals.
California clockDiscovered Nov 30, 2013 → Notified Dec 1, 20131d ✓ CA 60-day OK4 weeks discovery → filing
⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident
Source provenance
- Source URL
- https://oag.ca.gov/ecrime/databreach/reports/sb24-43681
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Dec 30, 2013
- Raw hash
- 4ad2a587d6b1166c1ca74143118776b57ddffec1ccc15234336c4ece76bc47be
Reporting entity
- Name
- T-MOBILE USA, INC.norm: t mobile usa
- Domain
- t-mobile.com
Victim entity
- Name
- T-MOBILE USA, INC.norm: t mobile usa
- Domain
- t-mobile.com
Incident
- Discovered
- Nov 30, 2013
- Materiality determined
- —
- Notification sent
- Dec 1, 2013
- Affected individuals
- Not disclosed
- Data types
- IDENTITY_GOVERNMENTIDENTITY_BASICFINANCIAL_ACCOUNT
- Attack vector
- Third-Party / Supply Chain
- MITRE ATT&CK
- T1195 Supply Chain Compromise
- Threat actor
- ExternalFinancial
- Regulator citations
- Submitted Breach Notification to California Office of the Attorney General
- Third party
- via T-Mobile supplier
- Initial access
- supply_chain
Compliance
- Time to disclose
- 4 weeks(30 days from discovery to filing)
- Compliance flags
- CA 60-day OK · 1d
- Discovery-date grounding
- unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
- Clock breakdown
Statute Window Elapsed Threshold Status California Discovered: Nov 30, 2013→ Notified: Dec 1, 20131d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.