Category
'Cortex Bomb' is a general name for a class of lethal implants that are programmed to go off if a certain set of conditions are met. Generally, these are: 1) upon receipt of a coded broadcast message from the implanter; or 2) if tampered with. However, other conditions are possible. (If the subject leaves a certain area, if a coded broadcast message is -not- received, etc.)
System
The effects of the cortex bomb are up to the implanter, but are generally fatal to the victim. High-powered 'cranial nukes' may also injure bystanders.