Definition
A malicious system is a computer system or network intentionally designed or compromised to cause harm, disrupt operations, or steal sensitive information. These systems often operate covertly, masquerading as legitimate entities to trick users or bypass security measures. Understanding malicious systems is crucial for cybersecurity professionals to effectively defend against and respond to cyber threats. For example, a phishing website designed to steal login credentials is a type of malicious system. It differs from a compromised system, which becomes malicious due to an external attack rather than its inherent design. Knowledge of malicious systems is directly relevant to domains covered in CompTIA Security+ and CySA+ certifications.