: This is the exclusion operator. It tells the search engine to completely omit any web pages containing the specified term.
: By removing the four largest free email providers, you instantly eliminate billions of pages of spam, public forums, user directories, and generic contact lists. -gmail.com -yahoo.com -hotmail.com -aol.com txt 2021
Many files indexed under these search terms are "honeypots" or contain malicious scripts designed to infect the person downloading them. : This is the exclusion operator
Hackers use these lists to find email/password combinations from non-standard providers (like niche corporate or university emails) to attempt logins on other platforms. -gmail.com -yahoo.com -hotmail.com -aol.com txt 2021
This finds .txt files only on government domains.