: In 2016, a major breach was uncovered involving 272.3 million stolen account details from Yahoo , Gmail, and Hotmail .
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
: Hackers often group email addresses by common names or domains to sell "potent" datasets to other criminals for phishing or credential stuffing. : In 2016, a major breach was uncovered involving 272