YaK
Linkfluence YaK web crawler bot
About this crawler
YaK is a web crawler identified by the regular-expression pattern YaK\/ in the User-Agent request header. It is categorised as seo. Use the regex above to detect, log, allow, or block YaK traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
1.0%
Technical details
- Name
- YaK
- Pattern
YaK\/- Tags
- seo
- Reference
- https://www.meltwater.com/en/use-case/consumer-intelligence?utm_source=direct&utm_medium=linkfluence
- Added
- 2017/09/25
- rDNS suffixes
.linkfluence.com,.radarly.com- Instances
- 1 known sample(s)
rDNS verification (FCrDNS)
Verify a request is genuinely YaK with forward-confirmed reverse DNS: the client IP's PTR record must end in one of the suffixes below and a forward A/AAAA lookup of that hostname must return the same IP. UA strings alone are spoofable; FCrDNS is not.
.linkfluence.com.radarly.com
Sample User-Agent strings
Mozilla/5.0 (compatible; YaK/1.0; http://linkfluence.com/; [email protected])
Block this crawler
robots.txt — disallow YaK:
User-agent: YaK
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} YaK\/ [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "YaK\\/") {
return 403;
}
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