Steam Database Hacked, Valve Investigating Possible Theft - Game

Valve said today its Steam database was hacked last weekend and that personal information, including names, e-mails, and encrypted credit card information may have been compromised.

Valve sets sights on Discord with updates to Steam Chat

Valve upgrades Steam's security after several games are hacked and filled with malware

How To Recover a Steam Account That Has Been Hacked

Valve's online game service Steam hit by hackers - BBC News

Pressure grows on Valve to unplug Steam gaming platform vulnerabilities

A Steam database has been hacked, warns Valve – Destructoid

Valve Admits Steam Intrusion, No Current Evidence of Fraud - Giant Bomb

Steam Store Spreads Malware After Hacker Hijacks Developer Accounts

UPDATE] Dolphin's release on Steam indefinitely delayed after Nintendo sends cease & desist order to Valve