This program freezes any diagnostic attempt by the network for several seconds, granting a hacker precious time to complete a system hack.
The Stop! Worm is used to stop the clock for five seconds during the hacking minigame. Additionally, when the effect of the software is active, diagnostic nodes will be frozen for 5 seconds and will not move.
This software is also usable during remote hacking operations. The Remote Hacking augmentation accepts this software with the exactly same effects.
The item is sold by the merchants Costache in Prague and Entity in Golem City, and can also be found in various locations in the game, although most copies are held as datastores in hackable objects. Proper use of this software can turn the tide of any level hack.