773 Millions User Records Exposed in Monster Breach
Please read the following article on Wired:
https://www.wired.com/story/collection-one-breach-email-accounts-passwords/
Additional details on this breach may be found at Troy Hunts Site (Troy Hunt is responsible for HaveIBeenPwned):
https://www.troyhunt.com/the-773-million-record-collection-1-data-reach/