zgrab
Zgrab web crawler for security scanning
About this crawler
zgrab is a web crawler identified by the regular-expression pattern zgrab in the User-Agent request header. It is categorised as scanner. Use the regex above to detect, log, allow, or block zgrab traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.26%
Technical details
- Name
- zgrab
- Pattern
zgrab- Tags
- scanner
- Reference
- https://github.com/zmap/zgrab2
- Added
- 2018/08/30
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 zgrab/0.x
Block this crawler
robots.txt — disallow zgrab:
User-agent: zgrab
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} zgrab [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "zgrab") {
return 403;
}
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