Frontier warns 750,000 of a data breach after extortion threats

Frontier Communications experienced a mid‑April 2024 cyberattack attributed to the RansomHub extortion group that exposed personal information—confirmed for ~751,895 customers including full names and Social Security Numbers—with the threat actor posting Frontier on its dark‑web extortion portal and threatening to leak or sell the stolen data; Frontier implemented containment actions, notified regulators, and offered one year of credit monitoring to impacted customers.