If you're interested in SMS or texting services, as of 2021, many people used:
: Companies use similar "Dorking" to check if their employee credentials have been leaked in public .txt files. -gmail.com -yahoo.com -hotmail.com -aol.com txt 2021
By excluding consumer email providers, the researcher focuses on corporate or government domains. Finding a .txt file on a public server that contains @company.com emails plus passwords or hashes is a critical security finding eligible for bug bounties. If you're interested in SMS or texting services,
The search string you provided is a specific type of —a query used to find sensitive or specific information that isn't normally indexed in standard searches. Breakdown of the Search Query as of 2021
The combination of exclusions, file type, and year makes this string extraordinarily useful in three primary fields.