For everyone else: Do not store passwords in logs. Do not upload logs to public web roots. And if you see this dork in your server logs, know that a security researcher is likely doing you a favor—whether you asked for it or not. Want to learn more about defensive OSINT? Subscribe to our newsletter for weekly dork breakdowns and security fixes.
For defenders, it is a checklist item. Run this query against your assets quarterly.
At first glance, this looks like a random string of words. But to a trained eye, it is a surgical strike. This article will break down exactly what this command does, why it works, how to use it ethically, and—most importantly—how to "fix" the vulnerabilities it uncovers. Let’s parse the Google search operator piece by piece. 1. allintext: This operator tells Google to return only pages where all of the following keywords appear in the body text of the HTML document (not in the URL or title). It is stricter than a normal search. 2. username The literal word "username." The dork assumes that any file containing login credentials will likely have this string as a column header or label. 3. filetype:log This restricts results to files with the .log extension. Log files are notorious for accidentally recording sensitive information. System administrators often forget that application logs can capture POST data, including plaintext passwords. 4. passwordlog This is a compound keyword. It suggests the searcher is looking for log files specifically named or containing the string "passwordlog" (e.g., passwordlog.txt , debug_passwordlog.log ). Alternatively, it searches for instances where the words "password" and "log" appear adjacent. 5. facebook This targets the results. The searcher wants logs that contain references to Facebook—either user activity, API calls, or credentials entered for Facebook. 6. fixed This is the wildcard. In context, "fixed" likely refers to patched vulnerabilities, corrected log configurations, or archived bug reports. It may also indicate the searcher is looking for a "fixed" version of a previous exploit, or for pages discussing how a passwordlog issue was resolved. allintext username filetype log passwordlog facebook fixed
Find publicly indexed .log files that contain usernames and passwords (specifically for Facebook) where the issue might reportedly be "fixed," but the log remnants remain online. Why This Dork Works (The Technical Reality) You might think, "Surely Google doesn't index password files." You would be wrong.
Google crawls the web by following links. If a developer uploads a debug.log to a public web server (e.g., https://example.com/logs/passwordlog.txt ) and another page links to it—or if the directory listing is enabled—Google will index it. For everyone else: Do not store passwords in logs
User-agent: * Disallow: /*.log$ Then use Google’s URL Removal tool to purge already indexed log files. Let's imagine a penetration test for a marketing firm, "AdVentura."
<FilesMatch "\.(log|txt|sql)$"> Require all denied </FilesMatch> Remove Options +Indexes from your server config. Without directory listing, Google cannot crawl the tree of log files. 5. Use robots.txt and remove from index Add: Want to learn more about defensive OSINT
// Bad console.log(`User login: $username, pass: $password`); // Good console.log( User login attempt: $username ); Use sed or a log management tool to scrub sensitive data:
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