Breach taxonomy
Summary
On April 14, 2024, Frontier Communications detected that a cybercrime group had gained unauthorized access to portions of its IT environment, accessing personally identifiable information. Containment measures included shutting down certain systems, resulting in an operational disruption that the company characterized as potentially material. By the filing date, Frontier believed it had contained the incident and restored its core IT environment, with normal business operations being restored.
Tagging rationale
ThreatCyber Criminals
Filing states the company determined the third party was likely a cybercrime group — explicit attribution to cybercriminal actors.