Trojanized Newtonsoft.Json Fork Hides Game-Rigging Code in a Working Library
Jul 22, 2026
Supply Chain Attack / Malware
Cybersecurity researchers have discovered a NuGet typosquat that's unlike the typical information-stealing malware distributed via package registries: usual info-stealers: it's designed to rig live game results on Digitain. The package, named " Newtonsoftt.Json.Net ," masquerades as the Newtonsoft.Json library and is a trojanized fork. Seven versions of the package have been published to the NuGet repository: 11.0.4, 11.0.5, 11.0.7, 11.0.8, 11.0.9, 11.0.10, and 11.0.11. The package has been downloaded about 1,200 times to date. The package has been unlisted by its owner MagicalPuff96, meaning it will not be surfaced via a search on NuGet. However, the artifacts are still available for download from the registry. "The trojan rigs Digitain, an online betting platform, and in later generations, exfiltrates rigged round results to an attacker-controlled server, utilizing the header X-Seq-ApiKey: theperfectheist2025," according to JFrog . What's not...