Running this dork (ethically, of course) reveals a treasure trove of exposure. Common findings include:
Companies often store customer quotes, support tickets, or sales leads in Excel files. These files frequently contain:
You might think: "Surely, in the modern era, companies aren't leaving Excel files containing emails on public servers?" filetype xls inurl email.xls
Running this dork against random domains without permission may violate the Computer Fraud and Abuse Act (CFAA) or similar laws in your country. This information is intended for:
Do not name a file email.xls , passwords.xls , cc_data.xls , or customer_list.xls . Hackers use these keywords in their dorks. Use obscure, non-descriptive names like report_fy24_q3.xlsx . Running this dork (ethically, of course) reveals a
: Attackers can quickly harvest hundreds of valid email addresses to fuel spam or highly targeted spear-phishing campaigns. Data Leak Identification
: This part of the query tells the search engine to look for files with the extension ".xls", which is a file format used by Microsoft Excel to store spreadsheet data. The "filetype" operator is used to search for files of a specific type. This information is intended for: Do not name a file email
Believe it or not, during corporate events, temporary files like acquisition_contacts_email.xls are sometimes left on exposed web servers.