Sucuri
Security scanner checking malware blacklist and plugin vulnerabilities
About this crawler
Sucuri is a web crawler identified by the regular-expression pattern Sucuri in the User-Agent request header. It is categorised as scanner. Use the regex above to detect, log, allow, or block Sucuri traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.26%
Technical details
- Name
- Sucuri
- Pattern
Sucuri- Tags
- scanner
- Reference
- https://blog.sucuri.net/2012/10/ask-sucuri-how-does-sitecheck-work.html
- Added
- 2026/04/17
- Instances
- 1 known sample(s)
Sample User-Agent strings
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 MSIE 7.0; Sucuri Integrity Monitor/2.4
Block this crawler
robots.txt — disallow Sucuri:
User-agent: Sucuri
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Sucuri [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Sucuri") {
return 403;
}
← back to all crawlers