Nessus is a remote security scanning tool, which scans a computer and raises an alert if it discovers any vulnerabilities that malicious hackers could use to gain access to any computer you have connected to a network.

What is the difference between Acas and Nessus?

Nessus is considered the active scanner while PVS is passive. … ACAS offers a more streamlined, centralized method for running scans, collecting scan data, and provides highly customizable reports that provide senior leadership the ability to measure the effectiveness of its security program.

Is Nessus a SIEM tool?

Qualys and Nessus are examples of vulnerability scanners. Arcsight and Splunk are examples of SIEMs.