The Swedish tech news site SweClockers was hacked and around 255k accounts were exposed in April 2015.
The attack exposed the usernames, email addresses and salted hashes of passwords stored with a combination of MD5 and SHA512.
Source: https://haveibeenpwned.com/PwnedWebsites#JukinMedia
"id": "SWE183241222",
"linkid": "sweclockers-ab",
"type": "Data Leak",
"date": "04/2015",
"severity": "60",
"impact": "4",
"explanation": "Attack with significant impact with customers data leaks"