Testing
Vulnerability scan
Also called: vulnerability scanning, automated scan
A vulnerability scan is an automated check that compares software versions and configurations against a database of known vulnerabilities, producing a list of potential issues without confirming whether any of them can actually be exploited.
Scanning is cheap and repeatable, which is its value: it gives continuous coverage between penetration tests. Its limit is that it has no model of your application's logic, so it cannot evaluate whether one customer can reach another customer's data.