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Massachusetts 911 Outage Caused by Firewall, Not Cyberattack

State officials confirm two-hour disruption was due to an overprotective firewall, not a hack, with services now restored.

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Fire trucks from Cambridge in Cambridge, Mass.
Boston, MA - October 7: Police gathered at the Boston Medical Center emergency entrance where a Brewster ambulance brought in the Brockton police officer who was injured in a shooting on October 7, 2021. (Photo by Barry Chin/The Boston Globe via Getty Images)
Boston Police Car

Overview

  • The outage lasted from 1:15 p.m. to 3:15 p.m., affecting emergency services statewide.
  • Authorities advised residents to use local police numbers or fire boxes during the disruption.
  • A full investigation into why the firewall blocked calls is ongoing.
  • No emergencies were reported as being impacted by the outage.
  • Officials have implemented a technical solution to prevent future occurrences.