What Nessus is
Nessus is Tenable’s vulnerability-assessment product. It identifies exposed services, missing patches and configuration weaknesses through authorised scans and presents findings for review and remediation.
Nessus and Rapid7 InsightVM are separate vulnerability-management products. The supplied Tenable/Nessus screenshot therefore does not belong on the Rapid7 project page.
Screenshot evidence

How I used it
I used Nessus Essentials in the homelab to practise authenticated and network-based assessment workflows, review findings and understand how scanner output needs to be validated before remediation work is prioritised.
Safe scope
Scanning was limited to systems I owned or was explicitly authorised to assess. The public portfolio shows the product entry point only and does not expose targets, credentials, scan results or exploitable findings.
