Which layer of Defense in Depth focuses on protecting end-user devices?

The layer of Defense in Depth that focuses on protecting end-user devices is the Host layer. This layer is specifically designed to ensure the security of individual devices such as laptops, desktops, and mobile devices that users utilize to access organizational resources.

The Host layer employs various security measures, including antivirus software, endpoint detection and response (EDR) solutions, configuration management, and patch management. By implementing these protective measures at the device level, organizations can help safeguard against malware, unauthorized access, and other security threats that can compromise end-user devices.

This focus on end-user devices is crucial, as these devices often serve as entry points for attackers seeking to infiltrate an organization's network. By securing them effectively, organizations can significantly reduce their attack surface and improve their overall security posture.