Stacking Up to CIS Benchmarks The Center for Internet Security (CIS) establishes consensus benchmarks for a large variety of applications and operating systems. These benchmarks are a valuable aid to evaluate the security of your systems. Tenable has produced a number of Nessus audit files that have been certified by the Center for Internet Security to perform audits against the CIS standards. These audit files are available to ProfessionalFeed and Security Center customers through the the Tenable Support Portal. To use these audit files, you will need to provide Nessus with credentials to login to the target host to compare the configuration against the CIS standards. Scans that use login credentials run much faster than network-based scans and the results often provide more detailed vulnerability findings and information on configuration issues.