Which one is not correct definition of NSA$($National Security Agency Y$?$

$1.$ The NSA is an intelligence organization of the United States government, respon

for global monitoring. $2.$ The NSA collecting, processing of information and data for foreign intelligence

and counterintelligence purposes. $3.$ The NSA is concurrently charged with protection of U$.$S$.$ government communications and information systems against penetration and network warfare.

$4.$ The NSA is same like the Defense Intelligence Agency $($DIA$)$ and the Central Intelligence Agency $($CIA$)$