Throughout the Cold War’s iciest decades, the top-secret Parcae project, shrouded in secrecy for over 30 years, provided the U.S. with unmatched capabilities in electronic eavesdropping. This covert ...

A Chinese spy balloon that floated across to the US and was shot down by the military had technology from at least five ...

We’ll look to the modern times of the Cold War. Spies on both sides used highly technical tools to determine the science, industrial and military capabilities of their enemy. In this column ...

The document was written more than a week after Ethel Rosenberg’s arrest — her husband was arrested a month earlier — presumably to summarize what was known about a Soviet spy ring operating in the ...