The Sitok upgrade was an advanced security and diagnostic program developed by the Vulcan computer scientist Sitok in the 2350s decade.
History and specifications[]
The Sitok upgrade was applied to most Federation and Starfleet computer systems during this period; however, for some older computer systems, the Sitok upgrade caused major system crashes. In most such cases, a facility's computer hardware was upgraded to accommodate the Sitok upgrade; a notable exception was Avril Station, where it was determined that the costs of the upgrade outweighed its benefits. (SCE eBook: Security)