TOKYO -- Three decades since the deadly sarin gas attack on the Tokyo subway by the Aum Shinrikyo cult, Japan is contending with starkly different threats from lone-wolf attackers who turn to artificial intelligence and other online tools for help.
New technology helps individuals plan and carry out attacks

Japanese police officers and firefighters participate in a chemical attack drill in Tokyo in February. © Kyodo
TOKYO -- Three decades since the deadly sarin gas attack on the Tokyo subway by the Aum Shinrikyo cult, Japan is contending with starkly different threats from lone-wolf attackers who turn to artificial intelligence and other online tools for help.