Close
Menu

Cryptologic Bytes

Every little bit helps the NCF to influence the cryptologic future by sharing our educational resources, stimulating new knowledge, and commemorating our heritage.

"On This Date in Cryptologic History" Calendar

Learn about a wide variety of historical events related to cryptology, computers, math, cybersecurity, Intelligence, and more.

April 2028

This Month
Select a Date to View
Jump to a Month
Month
Year
Go to Previous Go to Next
S M T W T F S
26 27 28 29 30 Mar 31 Apr 1
1930: Frank Rowlett Goes to Work for William Friedman
1952: U.S. Navy's crypto org becomes Naval Security Group.
1981: Lt Gen Lincoln D. Faurer, USAF, became Director of NSA.
2001: Hainan Island incident involving Navy EP-3
2014: ADM Michael S. Rogers, USN, sworn in at NSA
2 3 4 5 6 7 8
1872: Painter & inventor Samuel Morse died.
1907: Cryptologic pioneer Solomon Kullback was born.
1929: Sec of War created the Signal Corps - Signals Intelligence Service.
1917: U.S. entered World War I.
1882: Birth of Hermann Pokorny, founder of the Hungarian cryptanalytic service.
1950: Navy PB4Y-2 Privateer Patrol Bomber Shot Down.
1973: Motorola completed the first handheld cellular phone call.
1918: French Army Lt Georges Painvin solved the first key for the ADFGVX cipher.
1943: First break in the Japanese Water Transport Code.
1945: The "Yamato" sunk off Okinawa, largely due to SIGINT tipoffs.
2003: Baghdad fell to Coalition forces.
1964: IBM Introduced the System/360
9 10 11 12 13 14 15
1930: Abraham Sinkov reported to work at SIS.
2001: China Released 24 USN EP3 Crewmen.
1889: Herbert O. Yardley's birth date.
1969: "Der Spiegel" Reported on Computer Espionage
1942: Central Bureau Established
1943: FRUPAC Intercepted Yamamoto's Encoded Itinerary.
1986: President Reagan Ordered Airstrikes Against Terrorists in Libya.
1969: Navy EC-121 Shot Down.
16 17 18 19 20 21 22
1993: Clinton administration proposed "Clipper Chip" method
1942: Station HYPO Intercepts Revealed Japanese Plans for Attack.
1943: Shootdown of Admiral Yamamoto.
1862: Confederate Signal Corps Established.
1974: Louis Tordella Retired as D/DIRNSA
1930: Solomon Kullback Reported to SIS to work for William Friedman.
1961: Bay of Pigs Landing.
1967: NSA Experts Spoke in Public on Computer Security at Atlantic City Conference.
1944: Gen MacArthur Attacked Hollandia, New Guinea
23 24 25 26 27 28 29
1869: Birthday of Cryptologic Machine Designer, Edward Hebern.
1980: Attempt to Rescue U.S. Hostages in Iran Failed.
1874: Radio Pioneer Guglielmo Marconi was Born.
1791: Samuel Morse Was Born.
1985: SECAF approved women for duty on EC-130 aircraft.
1964: DEFSMAC Established.
2007: Estonia Suffered Mass Cyber Attack.
Apr 30 May 1 2 3 4 5 6
1965: National Cryptologic School Approved
Saturday, April 1, 2028
Sunday, April 2, 2028
Monday, April 3, 2028
Wednesday, April 5, 2028
Thursday, April 6, 2028
Friday, April 7, 2028
Saturday, April 8, 2028
Tuesday, April 11, 2028
Wednesday, April 12, 2028
Thursday, April 13, 2028
Friday, April 14, 2028
Saturday, April 15, 2028
Sunday, April 16, 2028
Monday, April 17, 2028
Tuesday, April 18, 2028
Wednesday, April 19, 2028
Friday, April 21, 2028
Saturday, April 22, 2028
Sunday, April 23, 2028
Monday, April 24, 2028
Tuesday, April 25, 2028
Thursday, April 27, 2028
Saturday, April 29, 2028
Sunday, April 30, 2028

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.