What is 'malware'?

• A. Software that enhances system performance
• B. Malicious software designed to harm a system
• C. Applications that improve user interface
• D. Software programs that store data securely

Answer: (B)

Malware, short for "malicious software," refers to any software intentionally designed to cause damage to a computer system, server, client, or computer network. It encompasses a variety of harmful activities, including stealing, encrypting, or deleting sensitive information, altering or hijacking core computing functions, and monitoring users' computer activity without their consent. The distinguishing feature of malware is its intent to compromise the security and functionality of a computer system, making option B the correct definition.

On the other hand, software that enhances system performance, applications that improve user interface, and software programs that store data securely do not fit into the category of malware, as they are intended to benefit users and improve computing experiences rather than disrupt or harm systems.