Telecoms
6 organizations, 11 confirmed incidents.
Telecoms covers carriers, ISPs and communications providers, which hold customer proprietary network information: call records, billing data and account credentials. A US telecommunications carrier that discovers a breach of customer proprietary network information must notify federal law enforcement, the FBI and US Secret Service, no later than seven business days after determining a breach occurred, and may not notify affected customers until that law-enforcement notification process is complete, under the FCC's CPNI breach-notification rule (47 CFR 64.2011).
Incidents by year
| Year | Confirmed incidents |
|---|---|
| 2026 | 1 |
| 2025 | 1 |
| 2024 | 8 |
| 2021 | 1 |
Top organizations by confirmed incidents
| Organization | Confirmed incidents |
|---|---|
| AT&T INC. | 3 |
| Frontier Communications Parent, Inc. | 3 |
| Verizon Communications Inc. | 2 |
| Globalstar, Inc. | 1 |
| WYTEC INTERNATIONAL INC | 1 |
| Ziff Davis, Inc. | 1 |
Questions and answers
How many confirmed incidents involve Telecoms organizations on Breach Census?
11 confirmed incidents across 6 organizations in the Telecoms sector are recorded on Breach Census.
Which year had the most confirmed Telecoms incidents?
2024, with 8 confirmed incidents, the most of any year on record for this sector.
Which attack types are most common in the Telecoms sector?
Among Telecoms sector incidents that carry an attack-type classification, the most common one is Ransomware Attack.
What counts as a confirmed incident for the Telecoms sector?
An incident counts here once its primary organization carries the Telecoms sector label and the incident itself has reached the confirmed status described on the Methodology page; a bare claim or press report is not enough.