William F. Friedman, Date of Birth, Place of Birth, Date of Death

William F. Friedman

American cryptologist

Date of Birth: 24-Sep-1891

Place of Birth: Chișinău, Moldova

Date of Death: 12-Nov-1969

Profession: computer scientist, mathematician, cryptologist

Nationality: United States

Zodiac Sign: Libra

William Frederick Friedman (September 24, 1891 – November 12, 1969) was a US Army cryptographer who ran the research division of the Army's Signal Intelligence Service (SIS) in the 1930s, and parts of its follow-on services into the 1950s.
In 1940, subordinates of his led by Frank Rowlett broke Japan's PURPLE cipher, thus disclosing Japanese diplomatic secrets before America's entrance into World War II.