The hackers infiltrated the systems of Unreal Engine by SQL injection vulnerability which allowed the hacker to get access to the full database. A hacker has stolen thousands of forum accounts associated with Unreal Engine and its maker, Epic Games. The hacker acquired usernames, scrambled passwords, email addresses, IP addresses, birthdates, join dates, their full history of posts and comments including private messages, and other user activity data from both sets of forums. They immediately investigated the incident and took preventive steps.