SecurityHeaders
HTTP security headers analyzer and evaluator
About this crawler
SecurityHeaders is a web crawler identified by the regular-expression pattern SecurityHeaders in the User-Agent request header. It is categorised as scanner. Use the regex above to detect, log, allow, or block SecurityHeaders 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
- SecurityHeaders
- Pattern
SecurityHeaders- Tags
- scanner
- Reference
- https://securityheaders.com/
- Added
- 2026/04/17
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36 SecurityHeaders
Block this crawler
robots.txt — disallow SecurityHeaders:
User-agent: SecurityHeaders
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} SecurityHeaders [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "SecurityHeaders") {
return 403;
}
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