On March 31, 2026, the popular HTTP client Axios experienced a supply chain attack, causing two newly published npm packages for version updates to download from command and control (C2) that Microsoft Threat Intelligence has attributed to the North Korean state actor Sapphire Sleet. Although the malicious versions are no longer available for download, since Axios is one of the most widely used HTTP clients in the JavaScript ecosystem, this compromise exposed hundreds to potentially millions of users.
The post Mitigating the Axios npm supply chain compromise appeared first on Microsoft Security Blog.
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Key Points
1On March 31, 2026, the popular HTTP client Axios experienced a supply chain attack, causing two newly published npm packages for version updates to download from command and control (C2) that Microsoft Threat Intelligence has attributed to the North Korean state actor Sapphire Sleet
2Although the malicious versions are no longer available for download, since Axios is one of the most widely used HTTP clients in the JavaScript ecosystem, this compromise exposed hundreds to potentially millions of users
3The post Mitigating the Axios npm supply chain compromise appeared first on Microsoft Security Blog.
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Overview
On March 31, 2026, the popular HTTP client Axios experienced a supply chain attack, causing two newly published npm packages for version updates to download from command and control (C2) that Microsoft Threat Intelligence has attributed to the North Korean state actor Sapphire Sleet. Although the malicious versions are no longer available for download, since Axios is one of the most widely used HTTP clients in the JavaScript ecosystem, this compromise exposed hundreds to potentially millions of users.
The post Mitigating the Axios npm supply chain compromise appeared first on Microsoft Security Blog.
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What's New
On March 31, 2026, the popular HTTP client Axios experienced a supply chain attack, causing two newly published npm packages for version updates to download from command and control (C2) that Microsoft Threat Intelligence has attributed to the North Korean state actor Sapphire Sleet. Although the malicious versions are no longer available for download, since Axios is one of the most widely used HTTP clients in the JavaScript ecosystem, this compromise exposed hundreds to potentially millions of users.
The post Mitigating the Axios npm supply chain compromise appeared first on Microsoft Security Blog. These changes reflect Microsoft's ongoing investment in the Security ecosystem and their commitment to continuous improvement.
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Who's Affected
This update may affect users across multiple Microsoft products and services. IT professionals and system administrators should review the specifics to determine the impact on their environment.
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What You Should Do
1. Review the official Microsoft documentation for full details.
2. Assess impact on your specific environment and use cases.
3. Test changes in a non-production environment before deploying.
4. Keep an eye on Microsoft community forums for user feedback.
5. Bookmark the official announcement for reference.
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Background & Context
Microsoft regularly releases updates, patches, and feature announcements across its product ecosystem. This Security announcement is part of Microsoft's ongoing commitment to improving security, performance, and user experience across all platforms. For context, Microsoft typically follows a monthly update cycle (Patch Tuesday) for security updates, while feature updates and announcements may come at any time through preview channels and official blog posts. This independent coverage summarizes official Microsoft announcements to help IT professionals stay informed without needing to monitor multiple sources.
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