A computer virus shares some of these traits. A computer virus have to piggyback on top of some added affairs or certificate in adjustment to get executed. Once it is running, it is again able to affect added programs or documents. Obviously, the affinity amid computer and biological bacilli stretches things a bit, but there are abundant similarities that the name sticks.
A computer virus is a program that replicates. To do so, it needs to attach itself to added affairs files and assassinate whenever the host affairs executes. Beyond simple replication, a virus about consistently seeks to accomplish addition purpose: to could cause damage.