: Likely targeting .txt file extensions, which are frequently used for storing lists of usernames, emails, or logs.

: The trailing dash is sometimes used to exclude further terms or as a placeholder in specific database search formats. Context and Risks

: This is the primary keyword, telling the search engine to look for pages containing this specific domain name. -gmail.com -hotmail.com : The minus sign (

Historians or digital archivists studying email adoption patterns in 2023 can use the filter to locate plain text references to Yahoo domains while excluding more modern providers—highlighting Yahoo’s declining but present role.

Password-protect any directory containing sensitive logs.

Finding your own company’s leaked data so you can secure it before a breach occurs.