What indicates a true positive in an IDS?

What indicates a true positive in an IDS?

• A. The system ignores server requests
• B. An acceptable behavior is wrongly flagged
• C. An event triggers an alarm for a real attack
• D. The system performs routine checks

Answer: (C)

A true positive in an Intrusion Detection System (IDS) occurs when the system accurately identifies a legitimate threat and raises an alarm in response to a real attack. This situation demonstrates the effectiveness of the IDS in detecting and reporting actual security incidents that pose a risk to the network or system. When an event triggers an alarm for a real attack, it means that the IDS has successfully recognized harmful activity based on the defined security policies or attack signatures it monitors. This is crucial for the proactive protection of systems, as it enables security teams to respond promptly to potential breaches before they can cause significant damage. In contrast, choices that suggest other scenarios, such as ignoring server requests or performing routine checks, do not pertain directly to identifying or responding to actual threats. Additionally, the option indicating that acceptable behavior is wrongly flagged refers to a false positive, which undermines the reliability of the system. Understanding the difference between true positives and other outcomes is essential for assessing the performance and reliability of an IDS.

A true positive in an Intrusion Detection System (IDS) occurs when the system accurately identifies a legitimate threat and raises an alarm in response to a real attack. This situation demonstrates the effectiveness of the IDS in detecting and reporting actual security incidents that pose a risk to the network or system.

When an event triggers an alarm for a real attack, it means that the IDS has successfully recognized harmful activity based on the defined security policies or attack signatures it monitors. This is crucial for the proactive protection of systems, as it enables security teams to respond promptly to potential breaches before they can cause significant damage.

In contrast, choices that suggest other scenarios, such as ignoring server requests or performing routine checks, do not pertain directly to identifying or responding to actual threats. Additionally, the option indicating that acceptable behavior is wrongly flagged refers to a false positive, which undermines the reliability of the system. Understanding the difference between true positives and other outcomes is essential for assessing the performance and reliability of an IDS.