Cryptologic Bytes

"On This Date in History" Calendar

1940: FDR authorized wiretapping to watch German agents.

Tuesday, May 21, 2019

21 May 1940: Although the 1934 Communications Act banned wiretapping and Supreme Court rulings of 1937 and 1939, held that this ban applied to federal agents, FDR authorized wiretapping during "national defense" investigations. The purpose of these investigations was to anticipate and prevent planned espionage and sabotage.

Join or renew a membership

Anyone, anywhere can be a member of the NCMF.

BECOME A FOUNDER

The Founders' Group spearheads the capital campaign to build the new Cyber Center for Education and Innovation - Home of the National Cryptologic Museum.

 

More Info »

Donate to the CCEI-NCM

Be a part of the future - help us build the Cyber Center for Education and Innovation - Home of the National Cryptologic Museum.

VISIT THE ARCHIVES

Check out the Cryptologic Bytes Archives for a wide variety of articles on all topics related to cryptology, codes and ciphers, related publications, Museums, and more.