DysruptionHub registry workspace

Wireline

Critical infrastructure

CISA-designated subsector

1 incident2 organizations

Broader categoryCommunications

Related incidents

• Tidewater cyberattack disrupts internet across coastal Maine
  Jul 19, 2026

Related organizations

• Lincolnville Communications Inc.
• Tidewater Telecom

References

• National Security Memorandum on Critical Infrastructure Security and Resilience (NSM-22)