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Twilio Confirms Data Breach Exposing 33 Million Authy User Phone Numbers

Hackers exploited an unsecured API endpoint, potentially enabling phishing and SIM swapping attacks.

Overview

  • Twilio detected the breach through an unauthenticated API endpoint, which has since been secured.
  • The stolen data includes phone numbers but no other sensitive information from Twilio's systems.
  • Users are advised to update their Authy apps on Android and iOS for the latest security patches.
  • Authy users should be vigilant against potential phishing and smishing attacks.
  • Previous breaches in 2022 also targeted Twilio, compromising employee credentials and Authy accounts.