: Hackers often group email addresses by common names or domains to sell "potent" datasets to other criminals for phishing or credential stuffing.
The specific string format is also commonly seen in for academic journals or government records where multiple "Mohammeds" are listed with their respective webmail addresses. Sudan - National authorities - CITES mohammed-yahoo-com-hotmail-com-gmail-com
Large-scale breaches often involve billions of credentials across major webmail providers like Gmail , Yahoo Mail , and Hotmail/Outlook . : Hackers often group email addresses by common
: More recently, in April 2025, massive logs from malware like RedLine and Vidar exposed 183 million passwords from these same providers. 2. Common Usage in Academic & Professional Lists : More recently, in April 2025, massive logs
: In 2016, a major breach was uncovered involving 272.3 million stolen account details from Yahoo , Gmail, and Hotmail .