Maintenance+and+Security

= Maintenance and Security =
 * describe different types of malware (e.g., viruses, Trojan horses, worms, spyware, adware, malevolent macros) and common signs of an intrusion, and explain how to prevent malware attacks;
 * explain the importance of maintaining software updates (e.g., operating system updates, application software updates, virus definitions) to increase computer security and maintain hardware and software compatibility;
 * explain the importance of preventive maintenance (e.g., defragmenting a hard drive, deleting unused software and data files) to manage computer performance.