A directory junction, also known as a reparse point, is a file system feature that acts as a pointer or shortcut, redirecting file or directory operations to another location on the same volume. Unlike traditional shortcuts, junctions are handled at the file system level, making them transparent to most applications. In cybersecurity, attackers can exploit directory junctions to manipulate where files are written or read, potentially redirecting sensitive data or bypassing security controls. For example, a malicious actor might use a junction to redirect a security tool’s output to a location they control, thus evading detection or tampering with logs. Proper monitoring and permissions are essential to mitigate such risks.