If you were to run this search (and for ethical reasons, you should only do so as a security researcher with permission or in a controlled lab), the results can be terrifying. Here are real-world examples of what security experts have historically found:
: Ensure sensitive directories require authentication. filetype xls inurl password.xls
: Personal contact details used for social engineering and phishing attacks. If you were to run this search (and
With the evolution of file formats and search engines, you might also consider variations of this query, such as: filetype xls inurl password.xls