Vulnerability scanning and penetration testing can both inform security decisions. They differ in scope, methods, and the kind of evidence they provide. A useful engagement begins by deciding what your organization needs to learn.
Vulnerability scanning
A scanner checks systems for known weaknesses and configuration issues. Findings need review: an alert may depend on an inaccurate version match or on conditions that are not present in your environment. Scanning can be useful for repeat checks across a defined asset inventory.
Penetration testing
A penetration test evaluates security within agreed boundaries. It may include manual assessment of access controls, application logic, and the significance of identified weaknesses. Testing needs written authorization, a clear scope, and operating constraints.
Choose useful deliverables
Ask for a summary of what was assessed, the limitations, evidence supporting findings, and practical remediation guidance. Agree on how findings will be discussed and whether follow-up validation is included. Neither activity can guarantee that every weakness will be found.