TELEPHONE AND DATA SYSTEMS, INC.
bd_675d3d607620e8fc · schema v1 · pii pii-v1
Full breach record for TELEPHONE AND DATA SYSTEMS, INC. →Telephone and Data Systems, Inc. experienced an external system breach on January 20, 2021, which was discovered on June 2, 2021. The breach affected 9 Maine residents, compromising their names and Social Security numbers. Affected individuals were notified on July 2, 2021, and offered 24 months of credit monitoring services through Experian.
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Incident timeline
Jan 20, 2021
Begins
Jun 2, 2021
Discovered
Aug 3, 2021
Filed
Linked disclosures
Why this link?Regulatory filings (3) · sorted by filing gap
- Indiana State AGbd_5b2392ef9a37b89a2021-06-24 · +40dVerified
- Maine State AGbd_61bad7cf83045f492021-06-23 · +41dCandidate
- Massachusetts State AGbd_6b760a3cdf9319f02021-06-23 · +41dVerified
Filing propagation · 4 filings · 3 states
View merged incident ↗Pattern: first filing Jun 23 (ME), last Aug 3 (ME) — a 41-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.