Telecom Sector Forms C2 ISAC to Combat Cyber Threats

On May 19, 2026, eight major U.S. telecommunications companies established the Communications Cybersecurity Information Sharing and Analysis Center (C2 ISAC) to enhance their cybersecurity collaboration. Founding members include AT&T, Charter, Comcast, Cox, Lumen, T-Mobile, Verizon, and Zayo. The formation of C2 ISAC aims to address the increasing sophistication of cyber threats, particularly AI-powered attacks and state-sponsored espionage, exemplified by incidents like China's Salt Typhoon. The group will provide a private platform for sharing sensitive threat intelligence and vulnerabilities, which has been hindered in existing public-private ISACs. Valerie Moon, a former CISA and FBI official, will lead the organization. The C2 ISAC will operate independently from the Communications ISAC, which has been part of the federal government since 1984, allowing for more direct and candid information sharing among telecom companies. This initiative reflects the urgent need for unified defenses in the face of evolving cyber threats.

Key Points: • Eight major U.S. telecom companies launched C2 ISAC for enhanced cybersecurity collaboration. • C2 ISAC aims to address AI-powered cyberattacks and state-sponsored threats like Salt Typhoon. • Valerie Moon, former CISA official, appointed as executive director of C2 ISAC.