Last Friday, Riot Games TweetIts development environment was hacked, and intruders may have stolen the source code for League of Legends (LoL), Teamfight Tactics (TFT), and the company’s last version of its anti-cheat platform, Packman. At present, Riot Games has received a $10 million ransom notice from the threat actor, demanding that the ransom be paid to prevent the stolen data from being disclosed, but the company immediately rejected the ransom transaction.

In collaboration with the security research organization VX-UndergrounddialogueIn the report, the intruders said they social-engineered a Riot employee via SMS and then gained access to the Riot Game network, claiming they had continued access to Riot’s development network for 36 hours until they were hacked. Detected by the company’s Security Operations Center (SOC). They also told VX that the real goal was to steal the source code for Riot Vanguard, Riot’s current anti-cheat software.

But after Riot refused to pay the ransom for all the materials, the intruders put the source code of LOL and Packman up for sale on the forum. According to foreign media BleepingComputer, the low price of League of Legends source code and Packman source code package is 1 million US dollars. However, they are willing to sell Packman separately for $500,000.

The forum post included links to a thousand-page PDF document, a directory listing of the source code that the intruders claim has been stolen totaling 72.4 GB. Foreign media BleepingComputer reviewed the document, which appears to be a source code listing related to Riot Games, but its authenticity has yet to be confirmed.

The biggest problem with the leak of the League of Legends source code is that all kinds of cheats may increase, but this doesn’t really matter, after all, the game has long been full of bugs. On the other hand, the source code of the League of Legends network system has been leaked, and there may be some vulnerabilities that allow remote execution on player devices, but Roit said that he will pay close attention to and promptly fix problems and threats that arise in the short term.