• Audio Masking https://www.cryptomuseum.com/covert/bugs/masking/ 21 comments 25/9/2024
• Vulnerabilities in TETRA radio networks https://www.cryptomuseum.com/radio/tetra/burst.htm 81 comments 9/12/2023
• History of the Enigma https://cryptomuseum.com/crypto/enigma/hist.htm 3 comments 31/10/2023
• DDR Type 2 – Short-wave spy transmitter https://www.cryptomuseum.com/spy/ddr2/index.htm 17 comments 26/12/2022
• Barbie Typewriter (2015) https://www.cryptomuseum.com/crypto/mehano/barbie/ 20 comments 9/7/2022
• Operation Gunman – how the Soviets bugged IBM typewriters (2015) https://www.cryptomuseum.com/covert/bugs/selectric/ 31 comments 3/7/2022
• M-427 Russian online/offline encryption device reportedly seized in Ukraine https://www.cryptomuseum.com/crypto/ru/m427/ 16 comments 11/3/2022
• NSA's Backdoor of the PX1000-Cr https://www.cryptomuseum.com/crypto/philips/px1000/nsa.htm#stef 64 comments 17/2/2022
• Opto-electronic voice transceiver for covert infra-red light communication https://www.cryptomuseum.com/covert/opto/jo402/index.htm 14 comments 20/12/2021
• Covert Listening Devices Used by Stasi https://www.cryptomuseum.com/intel/stasi/index.htm 9 comments 25/10/2020
• IBM Selectric Bug https://www.cryptomuseum.com/covert/bugs/selectric/ 4 comments 3/1/2020
• SIGSALY – Secure Speech System Used in WWII by the Allies https://www.cryptomuseum.com/crypto/usa/sigsaly/index.htm 18 comments 9/6/2019
• DDR Type 2 Short-wave spy transmitter https://www.cryptomuseum.com/spy/ddr2/index.htm 28 comments 15/12/2018
• Barbie typewriter (2015) http://www.cryptomuseum.com/crypto/mehano/barbie/ 50 comments 16/7/2018
• Operation Gunman – how the Soviets bugged IBM typewriters (2015) http://www.cryptomuseum.com/covert/bugs/selectric/index.htm 18 comments 27/1/2018
• Operation Gunman – how the Soviets bugged IBM typewriters http://www.cryptomuseum.com/covert/bugs/selectric/ 9 comments 25/12/2016
• Selectric bug http://www.cryptomuseum.com/covert/bugs/selectric/index.htm 17 comments 21/12/2015
• Crypto Museum http://cryptomuseum.com 2 comments 23/2/2015
• Crypto Museum http://www.cryptomuseum.com/index.htm 3 comments 6/10/2014
• Crypto Museum http://www.cryptomuseum.com/ 3 comments 19/2/2011

• PX-1000Cr cryptographic algorithm and the NSA https://www.cryptomuseum.com/crypto/philips/px1000/nsa.htm 2 comments 28/9/2019 crypto
• [History] "The Thing" - a resonant cavity passive mic bug used to snoop on US Ambassadors in USSR during Cold War https://www.cryptomuseum.com/covert/bugs/thing/index.htm 14 comments 2/8/2019 electronics
• One of the world's first keystroke loggers: A device created by the Soviets that translated magnetic waves from an IBM Selectric typewriter and transmitted the results via radio to a nearby listening post. https://www.cryptomuseum.com/covert/bugs/selectric/ 21 comments 12/6/2019 netsec
• Description of the electronics in a Soviet bug installed into IBM Selectric typewriters in the US embassies in Moscow and Leningrad. http://www.cryptomuseum.com/covert/bugs/selectric/index.htm 24 comments 24/1/2018 electronics
• IBM Selectric Bug http://www.cryptomuseum.com/covert/bugs/selectric/index.htm 3 comments 22/12/2015 technology

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