Trojanized Newtonsoft.Json Package Targets Digitain's FG-Crash Game
In July 2026, cybersecurity researchers uncovered a malicious NuGet package named "Newtonsoftt.Json.Net," a typosquatted version of the legitimate Newtonsoft.Json library. This trojanized package specifically targeted Digitain's FG-Crash betting game by manipulating game results and exfiltrating rigged outcomes to an attacker-controlled server. The package was designed to function normally for other users, activating its malicious payload only within Digitain's environment. Seven versions of this package were published between August and October 2025, accumulating approximately 1,200 downloads before detection. The attack highlights the growing sophistication of supply chain attacks, where adversaries exploit trusted software repositories to distribute targeted malware. This incident underscores the critical need for developers to exercise caution when integrating third-party packages and to implement robust security measures to detect and prevent such threats.
Kill Chain