The Chinese man, YunHe Wang, is accused of helping assemble a vast network of infected computers, known as a botnet, that was used to carry out bomb threats, send child exploitation materials online and conduct financial fraud, among other schemes, the department alleges. Fraudsters used the botnet to submit tens of thousands of fake applications for federal relief during the coronavirus pandemic, leading to losses of about $5.
Authorities in Singapore and Thailand worked with the FBI on the bust, the Justice Department said. Court records did not list an attorney for Wang. Leatherman said the US government was pursuing his extradition to the US and that an investigation into other potential suspects was ongoing.