Report file generated by older versions of Nessus, a network security program used to scan for network vulnerabilities; saves the results of the network scan and used for security audits; replaced by the .NESSUS format in newer versions of Nessus. On Unix-based systems, NBE files can be converted to the .NESSUS format using the following command: /opt/nessus/bin/nessus -i in.nbe -o out.nessus NBE files can also be output to .HTML and .TXT files by replacing out.nessus with out.html or out.txt.