Major U.S. telecommunications companies have launched a new cybersecurity information-sharing center called C2 ISAC.

Major U.S. telecommunications companies - AT&T, Charter Communications, Comcast, Cox Communications, Lumen Technologies, T-Mobile, Verizon, and Zayo - have launched a new cybersecurity information-sharing center called C2 ISAC.

The initiative aims to enable real-time sharing of threat intelligence, improve coordination among industry leaders, and strengthen the resilience of telecommunications infrastructure. The move comes amid a rise in sophisticated cyberattacks by state-sponsored groups, including the China-linked cyber espionage group Salt Typhoon.

Experts note that the telecom sector has lagged behind industries such as finance and energy, where similar collective-defense models have been in place for years. The new industry-led structure is also expected to encourage more open and timely sharing of sensitive threat information outside government-managed frameworks.

Industry leaders argue that no single telecom provider has full visibility into threats affecting the entire sector. By sharing intelligence, vulnerabilities, attack indicators, and lessons learned, companies can improve their ability to detect, prevent, and respond to cyber threats.

The creation of C2 ISAC reflects the growing need for collective defense as cyber threats become more advanced, AI-driven attacks increase, and nation-state actors continue targeting critical communications infrastructure.