cf-qualys-scanner
Web vulnerability scanner detecting security issues and compliance
About this crawler
cf-qualys-scanner is a web crawler identified by the regular-expression pattern cf-qualys-scanner in the User-Agent request header. It is categorised as scanner. Use the regex above to detect, log, allow, or block cf-qualys-scanner traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
No block-rate data for this crawler.
Technical details
- Name
- cf-qualys-scanner
- Pattern
cf-qualys-scanner- Tags
- scanner
- Reference
- https://www.qualys.com/solutions/pci-compliance
- Added
- 2026/04/17
- Instances
- 1 known sample(s)
Sample User-Agent strings
cf-qualys-scanner
Block this crawler
robots.txt — disallow cf-qualys-scanner:
User-agent: cf-qualys-scanner
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} cf-qualys-scanner [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "cf-qualys-scanner") {
return 403;
}
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