Which device is defined as a physical or logical device used to capture keystrokes?

The correct answer is a key logger, which refers to a device or software designed specifically to capture keystrokes made on a computer or mobile device. Key loggers can be physical devices attached to a keyboard or can be software applications that operate in the background without the user's knowledge. Their primary purpose is to record each keystroke entered, which can then be analyzed to capture sensitive information, such as passwords, credit card numbers, and personal messages.

This technology is often misused for malicious purposes, making it a key factor in cybersecurity concerns. Understanding the functionality of a key logger is crucial in the realm of cybersecurity as it highlights the methods attackers may use to compromise sensitive information and emphasizes the importance of implementing effective security measures to protect against such threats.

The other options include devices that serve different purposes in cybersecurity. A firewall is designed to monitor and control incoming and outgoing network traffic based on security rules, serving as a barrier between a trusted network and untrusted ones. An intrusion detection system (IDS) is meant to detect unauthorized access or anomalies within a system or network, alerting administrators to potential threats. Lastly, a VPN (Virtual Private Network) provides a secure connection to another network over the internet, ensuring privacy and anonymity while online but does not