In many corporate environments, employees—and sometimes even IT managers—keep "master lists" of login credentials in spreadsheets for convenience. If these files are uploaded to a public-facing server, a misconfigured cloud bucket (like Amazon S3), or an unsecured FTP site, Google will find and index them. By running this search, a malicious actor could find: for internal portals. FTP or SSH logins for web servers.
Ensure your robots.txt file explicitly tells search engines which directories should not be indexed. filetype:xls and intext:password
# Use Google dorking manually site:yourdomain.com filetype:xls intext:password In many corporate environments