This attack could pose a moderate security threat. It does not require immediate action.
This signature indicates the use of Whisker or tools using libwhisker for IDS evasion of HTTP attacks.
Whisker is a CGI-based application used to perform vulnerability assessments on webservers. Whisker can be used to determine potential security vulnerabilities or IDS evasion of HTTP attacks.
Monitor whether or not the machine using this tool to scan the webserver is authorized to do so.