DECA+ Business Management and Administration Practice Exam 2025 - Free Business Management Practice Questions and Study Guide

Malware is best defined as illegal programs that disrupt computer processes and steal information. This definition captures the essence of what malware is and its primary functions. Malware encompasses various types of malicious software, including viruses, worms, Trojans, ransomware, and spyware. These programs are created with the intent to harm, exploit, or gain unauthorized access to systems and data.

When malware infects a computer or network, it can disrupt normal operations, lead to data breaches, and result in significant financial and reputational damage to individuals and organizations. The purpose of malware is inherently destructive or harmful, validating the choice of definition.

The other options present different categories of software but do not align with the nature of malware. For instance, secure software that protects data refers to antivirus or security programs designed to prevent malware infections rather than being malware itself. Software that enhances computer performance is typically legitimate utility software aimed at optimizing system efficiency, not malicious. Lastly, open-source tools for system maintenance focus on legitimate software that aids in maintaining and administering systems, which is far from the deceitful and harmful characteristics of malware.