The first online message in history was transmitted over the ARPANET at 10.20 in the evening on 29 November 1969.

Set up by the United States’ Department of Defence in 1958, the Advanced Research Projects Agency (ARPA) designed a massive system connecting supercomputers of the time and using TCP/IP protocols. The network was intended to facilitate communication for research and development projects. Initially, the network consisted of four nodes, three nodes were established at universities in California with the fourth one set up at the University of Utah. The network created between these universities was named ARPANET on 2 September 1969.

On 29 October thirty-four years ago, Charley Kline, a student programmer at the University of California, Los Angles (UCLA) transmitted a message with the word “login” from the university’s SDS Sigma 7 computer to the SDS 940 computer of the Stanford Research Institute (SRI). However, the system crashed, and only the letters “lo” was received by the addressee. After the system had been restored, the full message arrived.