Japanese game developer Koei Tecmo has disclosed a data breach and taken their European and American websites offline after stolen data was posted to a hacker forum.
Koei Tecmo is known for its popular PC and console games, including Nioh 2, Hyrule Warriors, Atelier Ryza, Dead or Alive, etc.
On december 20th, a threat actor claimed to have hacked into the koeitecmoeurope.com website on December 18th through a spear-phishing drive sent to an employee. as piece of this attack, a forum database with 65,000 users was stolen, and the actor claims to have planted a web shell on the site for continued access.
There are FTP credentials on the casing I found and i would live happy to share those with you if you bought the shell as well as multiple twitter secrets for their twitter accounts that they have, the terror histrion stated as part of their sales pitch.
In a carry on a hacker forum, the threat actor was attempting to deal a forum database for 0.05 bitcoins, or approximately $1,300, and web shell access for 0.25, or approximately $6,500.
On December 23rd, the same threat doer leaked the database for release on the same hacker forum.
Koei Tecmo database leaked for free
Koei Tecmo database leaked for free
The samples of the database seen by BleepingComputer include forum members' email addresses, IP addresses, hashed passwords and salts, usernames, date of births, and country.
Koei Tecmo takes websites offline
After learning of the leaked data, Koei Tecmo took the American (https://www.koeitecmoamerica.com/) and European (koeitecmoeurope.com) websites offline with the following message:
Due to the possibility of an external cyberattack on this website, it is temporarily closed as we inquire the issue.
Koei Tecmo America's website was taken offline
Koei Tecmo America's website was taken offline
Since learning of the attack, Koei Tecmo released a data breach advisory stating that a forum on a UK subsidiary's website was compromised and the stolen data was leaked online.
Within the website operated by KTE, the Forum page and the registered user information (approximately 65,000 entries) has been determined to the data that may have been breached. The user data that may have been leaked through hacking is perceived to be the (optional) account names and related watchword (encrypted) and/or registered e-mail address, Koei Tecmo disclosed in a data transgress advisory.
Koei Tecmo states that the breach only affected the forum and not other portions of the site. They also say that no financial information was stored in this database.
The game company has determined that the possibility of it beingness a ransomware round is low and that there get been no threats or demands made to the company.
Out of an abundance of caution, Koei Tecmo has slice off the UK subsidiary KTE from its internal network while investigating the attack.
Koei Tecmo is not the first game developer hit with a cyberattack this year.