Incident Score: Analysis & Impact (MICMICMICGIT1780813480)
The details regarding individual company incidents & reports gives you full view from every side.
Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Microsoft's Cyber Attack and lateral movement inside company's environment.
- Overview of affected data sets, including SSNs and PHI, and why they materially increase incident severity.
- How Rankiteo’s incident engine converts technical details into a normalized incident score.
- How this cyber incident impacts Microsoft Rankiteo cyber scoring and cyber rating.
- Rankiteo’s MITRE ATT&CK correlation analysis for this incident, with associated confidence level.
Full Incident Analysis Transcript
In this Rankiteo incident briefing, we review the Microsoft breach identified under incident ID MICMICMICGIT1780813480.
The analysis begins with a detailed overview of Microsoft's information like the linkedin page: https://www.linkedin.com/company/microsoft, the number of followers: 27225811, the industry type: Software Development and the number of employees: 226477 employees
After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 664 and after the incident was 659 with a difference of -5 which is could be a good indicator of the severity and impact of the incident.
In the next step of the video, we will analyze in more details the incident and the impact it had on Microsoft and their customers.
Microsoft (GitHub Repositories) recently reported "Microsoft GitHub Repositories Hit by Miasma Supply Chain Attack", a noteworthy cybersecurity incident.
Microsoft’s GitHub repositories have been targeted in the ongoing *Miasma* self-replicating supply chain attack, affecting 73 repositories across four organizations: Azure, Azure-Samples, Microsoft, and MicrosoftDocs.
The disruption is felt across the environment, affecting GitHub repositories, AI coding tools (Claude Code, Gemini CLI, Cursor, VS Code).
In response, moved swiftly to contain the threat with measures like Disabled access to compromised repositories, terms-of-service violation notices.
The case underscores how teams are taking away lessons such as The attack exploits the trust model in open-source ecosystems, highlighting the need for enhanced security measures in maintainer credentials and repository updates, and recommending next steps like Implement stricter access controls for maintainer credentials, enhance monitoring of repository updates, and educate developers on supply chain attack risks.
Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.
The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.
MITRE ATT&CK® Correlation Analysis
Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Supply Chain Compromise: Compromise Software Dependencies and Development Tools (T1195.001) with high confidence (95%), with evidence including miasma self-replicating supply chain attack affecting 73 repositories, and malicious code injection into repositories like *icflorescu/mantine-datatable* and Valid Accounts: Cloud Accounts (T1078.004) with high confidence (90%), with evidence including compromised maintainer credentials, and teamPCP may still retain access to *durabletask* PyPI package. Under the Execution tactic, the analysis identified Command and Scripting Interpreter: JavaScript (T1059.007) with moderate to high confidence (80%), supported by evidence indicating payload executes automatically via *npm test* script and User Execution: Malicious File (T1204.002) with moderate to high confidence (85%), supported by evidence indicating 4.3 MB runner executes when developers open affected repositories in AI coding tools. Under the Persistence tactic, the analysis identified Server Software Component: Web Shell (T1505.003) with moderate to high confidence (70%), supported by evidence indicating malicious code injected into repositories like *icflorescu/mantine-datatable* and Implant Internal Image (T1525) with moderate to high confidence (75%), supported by evidence indicating self-replicating worm propagates through legitimate open-source channels. Under the Privilege Escalation tactic, the analysis identified Valid Accounts: Cloud Accounts (T1078.004) with high confidence (90%), supported by evidence indicating compromised maintainer credentials used to inject malicious code. Under the Defense Evasion tactic, the analysis identified Masquerading: Match Legitimate Name or Location (T1036.005) with moderate to high confidence (85%), supported by evidence indicating new repositories with deceptive descriptions like *Miasma such as The Spreading Blight* and Obfuscated Files or Information (T1027) with moderate to high confidence (70%), supported by evidence indicating 4.3 MB runner payload executes automatically in AI coding tools. Under the Lateral Movement tactic, the analysis identified Lateral Tool Transfer (T1570) with moderate to high confidence (80%), supported by evidence indicating self-replicating worm infects additional packages and repositories. Under the Impact tactic, the analysis identified Resource Hijacking (T1496) with moderate to high confidence (85%), supported by evidence indicating disabled access to compromised repositories, terms-of-service violation notices and Service Stop (T1489) with moderate to high confidence (75%), supported by evidence indicating gitHub disabled access to compromised repositories. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Microsoft Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/microsoft/incident/MICMICMICGIT1780813480
- Microsoft CyberSecurity Rating page: https://www.rankiteo.com/company/microsoft
- Microsoft Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/micmicmicgit1780813480-azure-microsoft-github-microsoftdocs-cyber-attack-may-2026/
- Microsoft CyberSecurity Score History: https://www.rankiteo.com/company/microsoft/history
- Microsoft CyberSecurity Incident Source: https://thehackernews.com/2026/06/miasma-worm-hits-73-microsoft-github.html
- Rankiteo A.I CyberSecurity Rating methodology: https://www.rankiteo.com/Images/rankiteo_algo.pdf
- Rankiteo TPRM Scoring methodology: https://static.rankiteo.com/model/rankiteo_tprm_methodology.pdf