cryptomuseum.com

R5rdQ TIL that the Netherlands' first mobile phone network was super unsafe. Spies could listen in on phone calls. Hackers discovered that they could steal any phone number or get new phone numbers by modifying the phone itself, and there was a black market for stolen car phones.
nWmEP TIL that the Enigma machine, a German cypher used in WWII was officially invented in 1918 by Arthur Scherbius.
WkmeN TIL about Project GUNMAN, the discovery of primitive keylogging technology installed by the KGB into the IBM Selectric typewriters used in the US Embassy in Moscow, enabling the Soviets to steal US secrets for eight years.