Cascade virus
The cascade virus was a type of computer virus that had the effect of wiping all data on a computer system. 

The devastating effect of this type of computer virus was demonstrated in 2373, when the former Starfleet officer Michael Eddington used a virus he had planted before he joined the Maquis to disable the . With the computer's memory erased, the Defiant was completely disabled and had to be towed back to Deep Space 9 by the . He had also placed several similar viruses on Deep Space 9, but Constable Odo managed to remove them. ()

Computer technology