GTIG: 2026 OSS Supply Chain Compromise, Credential Theft, and Self-Propagation

GTIG: 2026 OSS Supply Chain Compromise, Credential Theft, and Self-Propagation 1. Basic Information Article Title : Batten Down Your Packages: Mitigation Guidance for Supply Chain Compromise Publisher : Google Threat Intelligence Group / Mandiant Publication Date : 2026-07-30 Original URL : https://cloud.google.com/blog/topics/threat-intelligence/mitigation-guidance-for-supply-chain-compromise/ Related Sources : TeamPCP, axios, and WAVESHAPER.V2 investigations within the article Related Entities : UNC6780/TeamPCP, SANDCLOCK, MIDNIGHT NEPTUNE/UNC1069, WAVESHAPER.V2, npm, PyPI, Docker Hub, GitHub Actions, axios Severity : High 2. Executive Summary Attackers are stealing credentials from developers, maintainers, and CI/CD pipelines to tamper with legitimate packages. This attack model is growing on a large scale: it steals cloud secrets from user environments, self-propagates to other packages, and leads to ransomware or extortion. 3. Attack Flow UNC6780 / TeamPCP Attackers gain write permissions by abusing GitHub Actions pull_request_target , compromising maintainer accounts, or publishing malicious packages. They inject malicious code into legitimate and spoofed packages on PyPI, npm, and Docker Hub. Users execute the code during installation on their development devices or in CI/CD pipelines. Tools like SANDCLOCK steal credentials for the cloud, CI/CD, and package registries. Attackers tamper with other packages owned by the victim to spread like a worm. They pivot from AI software into wider enterprise networks. They monetize the stolen credentials by selling them or partnering with ransomware and data extortion groups. axios / MIDNIGHT NEPTUNE Attackers compromise maintainer accounts using social engineering. They add malicious dependencies to the legitimate axios package and publish a new version. Dependency resolution spreads the package to many users and downstream packages. A dropper deploys the WAVESHAPER.V2 backdoor. 4. Attacker Position and Execution Locati