What is Tenable Nessus?
Tenable Nessus, a proprietary vulnerability scanner. Tenable.io is a paid subscription service. Furthermore, it is an open-source network vulnerability scanner that employs the Common Vulnerabilities and Exposures architecture to facilitate the cross-linking of compliant security tools. Nessus is a program that scans computers for vulnerabilities that hackers MAY exploit.
Nessus can scan for the following vulnerabilities and exposures:
- Vulnerabilities on a system that could allow unauthorized control or access to sensitive data
- Misconfiguration (e.g. open mail relay) (e.g. open mail relay)
- Vulnerabilities for denial of service (Dos)
- Some system accounts have default passwords, a few common passwords, and blank/absent passwords.