“The Yemen attack timeline that Defense Secretary Pete Hegseth posted to a Signal chat group would have been so highly classified, under Pentagon guidelines, that the details should have been restricted to a special, compartmented channel with its own code word and with access tightly limited,” the Washington Post reports.
“Current and former U.S. defense and intelligence officials described the lack of operational security, which leaked when the editor in chief of the Atlantic magazine was inadvertently added to the chat group among President Donald Trump’s top aides, as a potentially grievous espionage vulnerability.
Russia, China and other hostile intelligence services constantly probe government officials’ communications devices for weakness.”