Which type of software can prevent, detect, and potentially correct malicious activities?

The correct answer encompasses the capabilities of all the options mentioned, recognizing that a comprehensive approach to security often requires multiple layers of defense. Each type of software plays a unique role in protecting systems from malicious activities.

Antivirus software is designed specifically to detect and remove malware, including viruses, worms, and trojans. It continuously scans the system for known threats and can often prevent these threats from executing, thereby protecting the integrity of data and system operations.

Personal firewalls add another layer of security by monitoring and controlling incoming and outgoing network traffic based on predetermined security rules. They help block unauthorized access to a network while still allowing legitimate traffic, providing an essential safeguard against external threats.

Intrusion Detection Systems (IDS), particularly host-based systems, monitor a single host for suspicious activities and policy violations. They can alert administrators to potentially malicious activities occurring in real-time. While IDS primarily focuses on detection, some systems can also include response mechanisms that can take actions if malicious activities are identified.

Recognizing that these tools together create a more robust security posture justifies the choice of selecting all methods listed. Employing multiple security solutions allows for a layered defense strategy, addressing different aspects of security vulnerabilities and threats.