🌲Washington State AG
Clustered 4 filings across 4 jurisdictions · filing window Aug 24, 2021 → Aug 31, 2021. View entity profile → Other incidents for this victim →
incident inc_1938c9b855a64b84 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
CA OR SC WA
Time between earliest and latest filing
Not recorded for this incident
Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster.
all State AG
Earliest sighting first · deep chronology in Litigation Timeline
Jul 22, 2021
When the intrusion reportedly occurred, per the linked filings
Aug 17, 2021
Reported by WASHINGTON AG, CALIFORNIA AG, OREGON AG filings
Aug 18, 2021
Reported by SOUTH CAROLINA AG filing
About this clustering
DisclosureLens links filings into incidents through layered matchers: deterministic rules (same source document, multistate filings of one breach, tight-window same-victim pairs), a weighted-similarity scorer for cross-source candidates, and an operator review queue for everything uncertain. Each link records its own method and confidence — shown per filing in the timeline below. The system defaults to NOT merging when uncertain, because a false merge (collapsing two unrelated breaches) is more harmful than a false split (showing related filings separately); uncertain pairs route to human review instead of auto-merging. Filing summaries shown in the timeline are AI-generated extracts — verify each against its linked source.
T-Mobile USA, a business sector entity reported a malware incident to the Washington Attorney General. The organization became aware of the incident on 2021-08-17 and filed notice on 2021-08-24. 2,079,648 Washington residents were affected. 7 days elapsed between awareness and notification. 26 days to identify the breach.
Affected (this filing): 2,079,648
T-Mobile USA reported a cybersecurity incident on August 17, 2021, where unauthorized individuals accessed personal data. The breach affected a subset of customers, exposing names, driver's licenses, government IDs, Social Security numbers, dates of birth, addresses, and phone numbers. Prepaid PINs were reset. No financial or payment information was compromised. T-Mobile provided two years of McAfee ID Theft Protection and activated Scam Shield. The investigation was ongoing as of the August 19, 2021 notification.
T-Mobile USA reported a data breach to the Oregon Attorney General. The breach was reported on 2021-08-27. The breach was discovered on 8/17/2021. Notice was sent on 8/19/2021.
T-Mobile notified South Carolina regulators on Oct 11, 2021, regarding a cyber incident affecting legacy Sprint and T-Mobile postpaid customers. Notifications were sent between Aug 18 and Sep 3, 2021, via SMS and email to cohorts including SSN and non-SSN data. Incident involved unauthorized access to customer records.