Operation Trojan Shield (stylized TRØJAN SHIELD), part of Operation Ironside, was a collaboration by law enforcement agencies from several countries, running between 2018 and 2021. It was a sting operation that intercepted millions of messages sent through the supposedly secure smartphone-based proprietary messaging app ANOM (also stylized as AN0M or ΛNØM). https://en.wikipedia.org/wiki/Operation_Trojan_Shield