ENISA was created in 2004 with an initial period of five years, and was aimed at supporting the functioning of the internal market by controlling network security and ensuring the flow of information within the EU.
ENISA loodi 2004. aastal esialgu viieks aastaks ja selle eesmärk oli toetada siseturu toimimist, kontrollides võrgujulgeolekut ja tagades infovood ELi sees.