........... is a malicious program that executes when a certain criterion is met, or a certain file is accessed, or when a certain key combination is pressed.

Correct option is D

The correct answer is (d) Logic bomb
Explanation:
. A Logic bomb is a piece of code intentionally inserted into a software system that will set off a malicious function when specified conditions are met.
. These conditions can be a specific date or time, the execution of a particular file, or even a specific keystroke combination.
. Unlike viruses, logic bombs often lie dormant for long periods until the trigger occurs. . They are frequently used by disgruntled employees to delete databases or corrupt systems after they leave an organization.
. Because they are embedded within legitimate programs, they can be difficult to detect by standard antivirus software until they are triggered.
Information Booster:
. If the trigger for a logic bomb is a specific date or time, it is often referred to as a "Time Bomb".
. Logic bombs are a subset of malware but are not technically viruses because they do not necessarily replicate themselves.
Additional Knowledge:
Logic hack (Option a)
. This is not a standard technical term in cybersecurity; it is likely a distractor for "Logic bomb". Denial of Service (DoS) (Option b)
. An attack meant to shut down a machine or network, making it inaccessible to its intended users by overwhelming it with traffic.
Rootkit (Option c)
. A collection of software tools that help a threat actor gain administrative-level access to a computer while hiding its presence from the operating system.