Handheld Radios is a tool tracked across 1 threat cluster and 1 intelligence report mention on ThreatCluster. First observed May 6, 2026; most recent activity May 6, 2026.
A 23-year-old university student in Taiwan, surnamed Lin, was arrested for halting four high-speed trains for 48 minutes on April 5, 2026. He used software-defined radio (SDR) equipment to transmit a false General Alarm…