National Cyber and Crypto Agency (Indonesian: Badan Siber dan Sandi Negara, lit.

It was founded by Lieutenant colonel (then finally attained the rank of Major general) Dr. Roebiono Kertopati [id], a medical doctor assigned to Indonesia's intelligence department at that time, Section B of the Ministry of Defense.

He was assigned to the department by Amir Sjarifuddin, Ministry of Defence at that time, to build a unit for signal intelligence.

In 1949, during the Dutch-Indonesian Round Table Conference period, he completed a signal intelligence course from the Dutch Ministry of Foreign Affairs and developed various cryptography methods.

His cryptography methods proved useful to secure the transmission of encrypted messages and government communications, during wartime and peacetime.

[7] Prior to the BSSN's formation, state cyber activities were carried out by the military intelligence agency and Cyber Operations Unit, the national police force (Directorate of Cyber Crime of the Criminal Investigation Agency), the State Intelligence Agency (Deputy VI), the Coordinating Ministry for Political, Legal, and Security Affairs (7th Deputy), the Ministry of Defense (Cyber Defense Center), the Ministry of Communication and Information Technology (Directorate of Informatics Application Control, Directorate of Information Security, and ID-SIRTII/CC), the Ministry of Foreign Affairs (Directorate of Diplomatic Security of General Directorate Public Information and Diplomatics), and each ministry's Computer Security Incident Response Team (CSIRT).

Each agency had its own interests and functions but primarily contributed for security purposes and protecting their own cyber infrastructure.

Due to infeasibility of the formation of a new agency such as BCN, he later chose to upgrade Lemsaneg, which have preexisting infrastructures and readily available human resources.

The decree taking out the BSSN from Coordinating Ministry for Political, Legal, and Security Affairs to be directed under the President.

In the past, during the Indonesian National Revolution, the Dinas Code held internships for those interested in being signal intelligence operators.

In 1969, the program was elevated into Pendidikan Ahli Sandi Gaya Baru (New Style Signal Expert Education).

In 1973, the program was later upgraded with many resources, becoming a school under the name AKSARA (Akademi Sandi Negara, State Signal Academy).