Critical

Trojanized Newtonsoft.Json Fork Hides Game-Rigging Code in a Working Library

The Hacker News

July 22, 2026 at 6:00 AM

Actively Exploited

Overview

Researchers have identified a malicious package on NuGet called 'Newtonsoftt.Json.Net' that pretends to be the popular Newtonsoft.Json library. Unlike typical malware that steals information, this trojanized version is specifically designed to manipulate live game results on Digitain. Seven versions of this fake package have been uploaded, posing a significant risk to developers who might unknowingly integrate it into their applications. This incident raises concerns about the security of package registries and the potential for similar attacks in the future. Developers need to be vigilant when sourcing libraries and verify the authenticity of packages before use.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: Newtonsoft.Json library, Digitain gaming platform
Action Required: Developers should verify the integrity of packages and ensure they are using the official Newtonsoft.
Timeline: Newly disclosed

Original Article Summary

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

Impact

Newtonsoft.Json library, Digitain gaming platform

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

Developers should verify the integrity of packages and ensure they are using the official Newtonsoft.Json library. They should also monitor their applications for any unauthorized changes or suspicious behavior related to game results.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Malware.

Read Original Article

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