The S-1 security droid was a variant of the Viper probe droid used as a security droid during the Galactic Civil War. By the time of the Battle of Yavin, S-1 and S-2 security droids were used by the Corellian Security Force to patrol the underground maintenance tunnels located beneath the surface of Coronet City, especially the lower maintenance areas. The anti-technology fanatics of the Meatlump gang sometimes encountered and fought S-1 and S-2 security droids since they had established their secret hideout in abandoned maintenance tunnels located just above the lower maintenance areas.
The S-1 security droid appeared in the 2003 video game Star Wars Galaxies, a massively multiplayer online roleplaying game developed by Sony Online Entertainment and published by LucasArts, prior to its closure on December 15, 2011. The S-1 security droid was added to the game as part of the "Meatlumps Theme Park", introduced with "Chapter 10: The Search for the Meatlump King," released on June 19, 2008.