Which of the following should an administrator implement to research current attack methodologies?

Design reviews assess the architecture of a system for security flaws but do not provide insight into current real-world attack methods.

A honeypot is a system or resource designed to lure adversaries, and because attackers interact with it directly, administrators can observe live attack techniques, tools, and procedures in a controlled environment. This makes it uniquely suited for researching current and emerging attack methodologies. Other tools in the list are defensive or analytical and do not capture live attacker behavior.

A vulnerability scanner identifies known weaknesses in systems but does not observe or record actual attacker techniques.

Code reviews examine source code for vulnerabilities but are a development-phase activity, not a method for researching live attack methodologies.