Malicious devices are tools or gadgets designed to cause harm, steal information, or disrupt systems. These can include items like keyloggers, which record keystrokes to capture sensitive data, or malware-infected USB drives that spread harmful software when connected to a computer. These devices can be used in various cybercrimes, including identity theft and corporate espionage. They often exploit vulnerabilities in technology to gain unauthorized access to networks or personal information, posing significant risks to individuals and organizations alike. Awareness and preventive measures are essential to mitigate these threats.