I know one of the victims. Actually a tourist who stayed in one of target hotels. The State Department is tracking a long list of victims. Current thinking is that it is not sonic but uhf radio wave type of device. Like sticking your head in a microwave. Probably a bugging device.
In the 1980s the Soviets were charged with using microwave techniques on the U.S. Embassy. Several diplomats suffered the consequence. The damage was underplayed but it was thought the US threatened massive retaliation if the Soviets continued the attack.
I’ve started thinking that too.
It’s more that their Soviet era spy gear is leaking unintended EM radiation.