The malware which is programmed to initiate at a specific date or when a specific event occurs is called

The malware which is programmed to initiate at a specific date or when a specific event occurs is called a "logic bomb". A logic bomb is a type of malware that is intentionally inserted into a system or software application by a malicious actor with the intention of causing damage or disruption at a predetermined time or when a specific trigger event occurs. A logic bomb is similar to a time bomb in that it is designed to lie dormant until a specific date or event occurs, at which point it is triggered to execute its malicious code. For example, a logic bomb could be programmed to erase critical files or data from a system on a certain date or when a particular employee's username is deleted from the system. Unlike other types of malware, a logic bomb may not necessarily be designed to spread or replicate itself to other systems. Instead, its sole purpose is to cause damage or disruption to the targeted system at a specific time or under certain circumstances.