When did the us army pay attention to comsec?

The U.S. Army began paying significant attention to communications security (COMSEC) during World War II, as the need for secure communications became evident. The establishment of the Army Signal Corps and the development of encryption technologies highlighted the importance of protecting sensitive information. Post-war, the Army's focus on COMSEC intensified during the Cold War, driven by the rise of electronic warfare and the need to safeguard military communications against adversaries. This emphasis has continued to evolve with advancements in technology and the increasing sophistication of threats.