13.3M accounts from Yam (yam.com) were exposed in this breach. Besides email addresses, it included passwords, which makes it a high-risk breach.
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Dates of birthEmail addressesNamesPasswordsPhone numbersPhysical addressesUsernames
In June 2013, the Taiwanese website Yam.com suffered a data breach which was shared to a popular hacking forum in 2021. The data included 13 million unique email addresses alongside names, usernames, phone numbers, physical addresses, dates of birth and unsalted MD5 password hashes.
Source: Have I Been Pwned (CC BY 4.0)