PathDefender
Security path analysis
About this crawler
PathDefender is a web crawler identified by the regular-expression pattern PathDefender in the User-Agent request header. It is categorised as scanner. Use the regex above to detect, log, allow, or block PathDefender 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
- PathDefender
- Pattern
PathDefender- Tags
- scanner
- Reference
- http://www.pathdefender.com/help/crawler
- Added
- 2026/05/03
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (compatible; PathDefender/1.0; http://www.pathdefender.com/help/crawler)
Block this crawler
robots.txt — disallow PathDefender:
User-agent: PathDefender
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} PathDefender [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "PathDefender") {
return 403;
}
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