Here's a paper reviewing and collating other papers: https://www.degruyterbrill.com/document/doi/10.1515/reveh-20...
> Since 2016, numerous American and Canadian diplomats and secret (intelligence) agents in Cuba, China, and other places in the world have experienced an abrupt onset of unusual clinical symptoms including, tinnitus, vertigo, visual problems, and cognitive difficulties, after they encountered strange sounds or sensations; this has been called “Havana syndrome”
> In a comprehensive report, the National Academies of Sciences, Engineering, and Medicine concluded that the most plausible mechanism for HS is a directed, pulsed radio frequency (RF) energy source
The article also mentions a (different?) weapon with physical effects
> At one point, they [the USA] launched something; I don’t know how to describe it. It was like a very intense sound wave. Suddenly I felt like my head was exploding from the inside,” the witness said.
> “We all started bleeding from the nose. Some were vomiting blood. We fell to the ground, unable to move. We couldn’t even stand up after that sonic weapon — or whatever it was.”
Personally, a cyber weapon doesn't make any sense to me since there is no good reason to keep the systems connected to an external network. As for an EMF weapon, rigorous EMF shielding can of course protect.
Pentagon buys device via undercover operation suspected link to Havana Syndrome
