A cybersecurity specialist is preparing to perform a vulnerability scan on an organization's infrastructure. The organization's management wants the scan to be as thorough as possible without directly compromising any systems or accessing sensitive data. The cybersecurity specialist considers both credentialed and non$-$credentialed scans to determine which will best suit the organization's requirements. In the described situation, if aiming to gather detailed vulnerability data from the system by logging into it using pre$-$defined accounts, which type of scan is the specialist planning to conduct?