What is RedactusWebClassifier?

RedactusWebClassifier is an AI agent in the security scanners category, operated by Redactus.

Bot name
RedactusWebClassifier
Operator
Redactus
Type
AI agent
Respects robots.txt
Not confirmed
robots.txt user agent
RedactusWebClassifier
Signs requests (Web Bot Auth)
Yes

About RedactusWebClassifier

Web classifier: fetches a site’s homepage to assign a category and rechecks periodically.

Security scanners probe sites for vulnerabilities, certificates and exposed services. Some are research projects, some are vendors you hired. Allow your own scanners and block the rest at the WAF.

RedactusWebClassifier user agent

RedactusWebClassifier identifies itself with this user agent string:

  • RedactusWebClassifier/1.0

Anyone can copy a user agent string. Transfon Security also checks where each request comes from, so a request that claims to be a known crawler but comes from the wrong network is treated as a fake, not as the real crawler.

How to block RedactusWebClassifier in robots.txt

We have not confirmed whether RedactusWebClassifier follows robots.txt. Add a rule, then check your logs to see that it stopped. robots.txt is a plain text file at the root of your domain, such as https://example.com/robots.txt.

Block RedactusWebClassifier from the whole site

User-agent: RedactusWebClassifier
Disallow: /

Block RedactusWebClassifier from some folders

User-agent: RedactusWebClassifier
Disallow: /private/
Disallow: /search

Allow RedactusWebClassifier only on some folders

User-agent: RedactusWebClassifier
Allow: /blog/
Disallow: /

Allow RedactusWebClassifier and block other crawlers

User-agent: RedactusWebClassifier
Allow: /

User-agent: *
Disallow: /

Things to know

  • Each host needs its own file. Rules on www.example.com do not apply to shop.example.com.
  • A crawler obeys only the most specific group that names it. Once you add a User-agent: RedactusWebClassifier group, RedactusWebClassifier ignores your User-agent: * rules, so repeat any that should still apply.
  • The user agent name is not case sensitive. We take RedactusWebClassifier from RedactusWebClassifier's user agent; check Redactus's own documentation if it publishes a different robots.txt name.
  • Crawlers cache robots.txt, so changes can take up to a day to apply. Disallow stops crawling but does not remove pages already collected or indexed.

Limits of robots.txt

  1. RedactusWebClassifier may not follow the rule. robots.txt is a request that nothing enforces, and we have not confirmed that RedactusWebClassifier follows it. Check your logs after adding a rule.
  2. The user agent could be fake. robots.txt matches the name a request claims. Anyone can send RedactusWebClassifier's user agent, and a scraper using it is not bound by Redactus's robots.txt policy. Only checking the source network tells a real RedactusWebClassifier from a fake one.

Treat robots.txt as a statement of your policy, and enforce it where requests arrive.

Who should care about RedactusWebClassifier

Publishers

Allow RedactusWebClassifier if it is a service you use, and keep its visits out of page views and ad requests either way.

Transfon Security for publishers

Media buyers and advertisers

RedactusWebClassifier is not a person. Exclude it from campaign and conversion data so reports reflect real visitors.

Transfon Security for advertisers

E-commerce

Allow RedactusWebClassifier only if it works for your store, and keep it away from cart and checkout.

Transfon Security for e-commerce

SaaS and APIs

If RedactusWebClassifier is a service you use, allow it on the endpoints it needs and block it elsewhere.

Transfon Security for SaaS and APIs

Block RedactusWebClassifier with Transfon Security

robots.txt is a request, not an enforcement. Transfon Security shows RedactusWebClassifier by name in the Top Bots report, so you can see how often it visits and which pages it reads. Block or allow it with a User Agent rule, or slow it down with a rate limit decision rule.

Transfon Security

Control RedactusWebClassifier on your site

  • See every RedactusWebClassifier visit and the pages it reads
  • Spot bots that fake trusted crawler names
  • Block, allow or rate limit RedactusWebClassifier with one rule
  • Works with or without robots.txt support

Frequently asked questions

What is RedactusWebClassifier?

RedactusWebClassifier is an AI agent in the security scanners category, operated by Redactus. Web classifier: fetches a site’s homepage to assign a category and rechecks periodically.

Does RedactusWebClassifier respect robots.txt?

We have not confirmed whether RedactusWebClassifier follows robots.txt. Add a robots.txt rule, then check your logs to see that it stopped, and block it by user agent if it did not.

How do I block RedactusWebClassifier?

Add "User-agent: RedactusWebClassifier" followed by "Disallow: /" to the robots.txt file at the root of your site. To enforce it, block requests whose user agent contains "RedactusWebClassifier" at your WAF. In Transfon Security that is one User Agent block rule.

Is robots.txt enough to block RedactusWebClassifier?

No. robots.txt is voluntary, so RedactusWebClassifier may not follow it, and anyone can send RedactusWebClassifier's user agent, so a fake RedactusWebClassifier ignores your rule. Enforce the rule where requests arrive, at your WAF, and check the source network.

Should I block RedactusWebClassifier?

Security scanners probe sites for vulnerabilities, certificates and exposed services. Some are research projects, some are vendors you hired. Allow your own scanners and block the rest at the WAF.

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Transfon Security identifies every bot in this directory in your traffic reports, flags fake search crawlers, and lets you allow, block or rate limit each bot.

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