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CS Professional · Artificial Intelligence, Data Analytics and Cyber Security - Laws and Practice · Cyber Crimes and Investigation Procedures

A disgruntled employee of an Indian firm inserts code in the payroll software that will delete all records on a particular future date if his name is removed from the employee list. Which type of malicious program is this?

This is a logic bomb. It is malicious code that remains dormant until a pre-set condition, here the removal of the employee's name or a date, is met, and then destroys data. Worms, spyware and ransomware work differently.

  1. ALogic bombCorrect
  2. BComputer worm that spreads over networks without any trigger
  3. CSpyware that records keystrokes
  4. DRansomware that demands payment

Explanation

A logic bomb lies dormant until a specified condition or date occurs, then executes its harmful action. A worm is characterised by self-replication across networks, not a condition-based trigger. Spyware gathers information secretly and ransomware encrypts data for ransom; neither matches deletion on removal of a name.

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