The official forum for Valve’s DOTA 2 was hacked in July and information belonging to around 2 million users was stolen. LeakedSource reports the attackers stole passwords, email addresses, IPs, and usernames. You can search for your info to see if it was included here.
Valve is remaining quiet and it appears the company’s method of security is to blame for much of the damage. Passwords were secured with MD5 hashing and a salt, which is far from ideal for protecting private data.
Around 1.54 million passwords (80%) were reportedly turned into plain text with ease.