Understanding Detective Controls in Network Defense

What type of physical security control uses motion sensors and video surveillance to detect intrusions?

• A. Preventive Controls
• B. Detective Controls
• C. Corrective Controls
• D. Compensating Controls

Answer: (B)

The choice that identifies the type of physical security control utilizing motion sensors and video surveillance to detect intrusions is indeed focused on detective measures. Detective controls are designed primarily to identify and alert on unauthorized or suspicious activities, making it critical for monitoring and assessing security status. Motion sensors are employed to detect movement within a specific area, which signals a potential breach or intrusion. Video surveillance complements this by providing visual monitoring that can capture incidents in real time or record them for later review, helping security personnel assess situations effectively. Together, these technologies form a layered defense approach that not only identifies intrusions as they occur but also contributes to forensic analysis after an incident has taken place. While preventive controls aim to stop security incidents before they occur, and corrective controls are implemented to address incidents after they have happened, detective controls play a central role in surveillance by allowing for prompt responses to security breaches. Compensating controls are alternative measures put in place when the original required controls cannot be employed. Thus, the implementation of motion sensors and video surveillance is a quintessential example of detective controls enhancing a security posture.

When it comes to keeping networks safe, understanding the different types of security controls is crucial. One category that often gets attention is detective controls, which utilize technology like motion sensors and video surveillance to catch unauthorized activities. Ever wondered how an organization knows when something suspicious is happening? That’s where these detective measures come into play, forming an essential line of defense.

Let's break this down a bit. Detective controls are primarily about identifying and alerting us to threats. They’re not designed to stop incidents - that’s more in the realm of preventive controls. Think of it like having a security camera monitoring your backyard. It won’t actually stop a thief, but it will alert you (and your neighbors) if something seems off. Motion sensors are the unsung heroes here, detecting movement in designated areas and raising the alarm on potential breaches. They serve as the eyes-and-ears of physical security.

Imagine waking up in the middle of the night to the sound of an alert, letting you know that someone’s creeping around your property. The next step is often visual confirmation, which is where video surveillance steps in. It not only records incidents but allows security personnel to assess real-time responses to threats. It’s kinda like having a second pair of eyes, right? Together, these tools create what’s known as a layered defense system - because, let’s face it, security isn’t just a one-trick pony.

But let's shift gears for a moment. What about those other types of controls? Preventive controls are the front line, aiming to stop issues before they happen. For instance, locked doors and firewalls fall under this category. Then there's corrective control, which kicks in after an incident - think of it as damage control after the fact. And lastly, we have compensating controls, which agree to accept alternative measures when the original methods cannot be employed, often due to specific limitations.

Now, connecting it all back: while preventive and corrective controls play important roles in a security framework, detective controls ensure you can respond quickly and accurately to incidents. They allow for investigation and forensic analysis post-incident, offering invaluable insights into how to enhance security systems moving forward.

To sum it all up, the integration of motion sensors and video surveillance significantly boosts security posture. It’s not just about having security measures in place; it's about ensuring those measures are effective and can adapt to various situations. Curious how these insights can apply to your own network defenses? Well, knowing the types of controls available can set you on the right path toward a more robust security strategy. So, whether you’re a student preparing for your exams or just someone eager to learn about network safety, grasping these concepts is key in today's digital age.