The Vietnamese company known as VNG suffered massive data in April 2018 which impacted over 163 million customers.
The data was discovered after it was posted on a popular hacking forum and was extensively redistributed.
The exposed breach data contained a wide range of personal attributes including usernames, birth dates, genders and home addresses along with unsalted MD5 hashes and 25 million unique email addresses.
Source: https://haveibeenpwned.com/PwnedWebsites#NotAcxiom
"id": "VNG105531222",
"linkid": "vng-corporation",
"type": "Breach",
"date": "04/2018",
"severity": "85",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"