Telecommunications Data Breaches

A ransomware-tracking record reported a Trump Mobile data breach in 2026, claiming that eSIM QR codes and unspecified personal information were exposed. The report is unconfirmed, and the number of affected individuals has not been established.

Tessco Technologies, Inc. experienced a data breach in 2026. Official filings confirm exposed Social Security numbers and financial account data, with at least two individuals affected.

Southern California Telephone Company was listed in a reported 2026 data breach by the Akira ransomware group on September 15, 2026. The report-only listing does not confirm the affected number of individuals or the types of data involved.

Zayo Group experienced a data breach in 2026, with a cache of corporate data discovered by a ransomware group.

Island Networks experienced a data breach in August 2026, reported by the Pear ransomware group.

GT-Tele.com reportedly experienced a data breach in August 2026, with the Settra ransomware group claiming responsibility.

First Digital data breach in 2026 was reported by a ransomware tracker on 2026-08-11, but the incident has not been publicly confirmed in the sources reviewed. No affected-count or data-type details were disclosed.

Service Electric data breach 2026 was listed on ransomware.live as a Qilin victim on 2026-08-03, but the incident has not been publicly confirmed in the source reviewed. The available record does not disclose any affected data types or affected count.

StellarRAD Systems data breach in 2026 was reported on a ransomware victim listing, but the incident has not been publicly confirmed by the company or a regulator. The available record does not confirm affected individuals or exposed data types.

Westcoast Communication Services experienced a data breach in July 2026, confirmed by a ransomware group.

Boston Electric and Telephone experienced a data breach in July 2026, discovered through reports of the Play ransomware group exfiltrating internal files.

Reports indicate a potential data breach at Telewave, Inc. in 2026, though official confirmation is absent.

8x8 Inc. /DE/ experienced a data breach in 2026 due to a third-party vendor, Klue Labs, impacting business contact and sales-related information.

A ransomware group claimed a Q Link Wireless data breach on June 16, 2026, though concrete details about the incident remain unconfirmed by the company or regulators.

A reported data breach impacting Zayo.com and Allstream.com in 2026 has not been publicly confirmed by the companies or regulators.

American Tower Corporation experienced a data breach in 2026, with over 5.2 million records allegedly compromised according to reports, though official confirmation is pending.

AireSpring, a US-based telecommunications company, experienced a ransomware incident in June 2026, attributed to the Chaos group, though there is no confirmed public breach notification.

A data breach reportedly involving Kennon Worldwide occurred on June 5, 2026, according to a ransomware group.

Power & Tel, a telecommunications company, was reportedly affected by a data breach in 2026, with claims made by the Anubis ransomware group. No official confirmation or details about affected individuals or data types have been released.

Hightower Communications experienced a reported data breach in 2026, according to a ransomware listing.

The purported 2026 data breach at "Lee Law Offices" is a misidentification. The research indicates a major AT&T data breach affecting over 100 million individuals in 2024, which frequently causes confusion in data security discussions.

Legend Networking & Telecom experienced a data breach in May 2026, claimed by the Play ransomware group, but official confirmation remains unavailable.

Charter Communications, Inc. experienced a data breach in May 2026, with a ransomware group claiming to have compromised customer data.