SilentAir Hijacks Asian Telecom Networks to Intercept SMS 2FA Codes and Spy on Taiwanese Users

A recently discovered spying group has been using compromised equipment within Asian mobile operators to intercept calls and texts of targeted individuals, primarily in Taiwan. The group, dubbed SilentAir, was identified by Enea, a Stockholm-based telecom and cybersecurity software company. SilentAir's attack sources have been found in at least six Asian countries. Enea has assessed with high confidence that SilentAir is a state-level actor. The group's activities include intercepting SMS 2FA codes, allowing them to spy on Taiwanese users. SilentAir's capabilities suggest a sophisticated and targeted approach to surveillance.