It was initially established in the fifth floor of a traditional building located on Diagonal Norte and San Martín avenues in Buenos Aires.
ENI graduates receive a title and diploma certified by the National University of La Plata, Buenos Aires.
The school's main building, a big belle époque academic-style mansion, is located on Calle Libertad 1235 in Buenos Aires.
The ENI mansion is protected by a 5-tonne steel gate and a constant surveillance through a closed circuit television (CCTV) system that records all activity around the building.
having a geographical sciences degree, and is considered a highly experienced and valuable woman with a long history in the Secretaría de Inteligencia.
[citation needed] The ENI seal (Escudo) is a Spanish-style coat of arms, composed of a chess board, symbol of strategy; a triangle, representing straightness; and a fox, which signifies the force of intelligence.
During the 1960s, teachers in the ENI were mainly retired military officials who specialized in the intelligence service, or exceptionally, in the infantry branch.
Teachers taught normal subjects on the matter of espionage, such as abilities opening any kind of lock they could encounter using very basic tools.
Establishing a well known method used by the CIA and other intelligence agencies, agents who passed all their exams could move on to the final steps of their training, which included shooting practice, weapons handling, and personal defense.
On February 26 of 1998, she was killed by Ricardo Dáttoli (a SIDE agent who was in charge of the ENI's security) who closed the 5-tonne steel gate while she was feeding the cats through it.
When Dáttoli activated the gates to open, and trapped Fijman's hand by doing so, an Australian tourist couple was passing by Libertad Avenue.
Since the incident, the ENI moved all its guards to other units or facilities and has changed its gate mechanism to a manual opening and closing procedure rather than a fully automatic one.