A robots.txt file tells search engine crawlers which URLs the crawler can access on your site. This is used mainly to avoid overloading your site with requests; it is not a mechanism for keeping a web page out of Google.

This can happen for a number of reasons, but the most common reason is that the robots. txt file is not configured correctly. For example, you may have accidentally blocked Googlebot from accessing the page, or you may have included a disallow directive in your robots.

While using this file can prevent pages from appearing in search engine results, it does not secure websites against attackers. On the contrary, it can unintentionally help them: robots. txt is publicly accessible, and by adding your sensitive page paths to it, you are showing their locations to potential attackers.