ReportedReported by fewer than three independent publishers, with no official finding.
US company with access to biggest telecom firms uncovers breach by nation-state hackers
Hackers working for an unnamed nation-state breached networks at Ribbon Communications, a key U.S. telecommunications services company, and remained within the firm’s systems for nearly a year without being detected...
DII-2025-003692 sources ↓
What happened
Not publicly disclosed.
Classification
Sources and evidence
This record was researched and written by the Index, based on the following original reporting.
DataBreaches.net
US company with access to biggest telecom firms uncovers breach by nation-state hackers
29 October 2025