Incident Score: Analysis & Impact (CISNIG1779150346)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Cybersecurity and Infrastructure Security Agency's Breach 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 Cybersecurity and Infrastructure Security Agency 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 Cybersecurity and Infrastructure Security Agency breach identified under incident ID CISNIG1779150346.
The analysis begins with a detailed overview of Cybersecurity and Infrastructure Security Agency's information like the linkedin page: https://www.linkedin.com/company/cisagov, the number of followers: 598835, the industry type: Government Administration and the number of employees: 1729 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 224 and after the incident was 162 with a difference of -62 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 Cybersecurity and Infrastructure Security Agency and their customers.
On 15 May 2025, Cybersecurity and Infrastructure Security Agency (CISA) disclosed Data Exposure issues under the banner "CISA Contractor Exposes Highly Sensitive Credentials in Public GitHub Repository".
A contractor for the Cybersecurity and Infrastructure Security Agency (CISA) inadvertently exposed highly privileged credentials and internal system details in a public GitHub repository, marking one of the most severe government data leaks in recent history.
The disruption is felt across the environment, affecting CISA’s secure code development environment (Landing Zone DevSecOps), internal artifactory, AWS GovCloud accounts, and exposing Highly privileged credentials, internal system details, AWS GovCloud admin credentials, plaintext passwords, access tokens.
In response, moved swiftly to contain the threat with measures like Repository taken offline, exposed AWS keys deactivated after 48 hours, and stakeholders are being briefed through CISA acknowledged the incident and confirmed an ongoing investigation.
The case underscores how Ongoing.
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 Unsecured Credentials: Credentials In Files (T1552.001) with high confidence (95%), supported by evidence indicating leaked files included administrative credentials for three AWS GovCloud accounts and Valid Accounts (T1078) with high confidence (90%), supported by evidence indicating exposed credentials were valid and could have allowed attackers to move laterally. Under the Credential Access tactic, the analysis identified Unsecured Credentials: Credentials In Files (T1552.001) with high confidence (95%), supported by evidence indicating plaintext passwords for dozens of internal CISA systems...in CSV files and Brute Force: Password Guessing (T1110.001) with moderate to high confidence (70%), supported by evidence indicating easily guessable credentials (e.g., platform names followed by the current year). Under the Lateral Movement tactic, the analysis identified Remote Services: Windows Remote Management (T1021.006) with moderate to high confidence (80%), supported by evidence indicating could have allowed attackers to move laterally within CISA’s infrastructure and Use Alternate Authentication Material: Application Access Token (T1550.001) with moderate to high confidence (85%), supported by evidence indicating access tokens for CISA’s internal artifactory exposed. Under the Persistence tactic, the analysis identified Compromise Software Supply Chain (T1554) with moderate to high confidence (80%), supported by evidence indicating potentially embedding backdoors in software builds via Landing Zone DevSecOps. Under the Defense Evasion tactic, the analysis identified Impair Defenses: Disable or Modify Tools (T1562.001) with high confidence (90%), supported by evidence indicating disabled GitHub secret detection in the repository. Under the Exfiltration tactic, the analysis identified Data from Cloud Storage (T1530) with moderate to high confidence (70%), supported by evidence indicating repository named *Private-CISA* contained internal system details. Under the Impact tactic, the analysis identified Resource Hijacking (T1496) with moderate confidence (60%), supported by evidence indicating aWS GovCloud admin credentials exposed, risk of unauthorized cloud resource usage. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Cybersecurity and Infrastructure Security Agency Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/cisagov/incident/CISNIG1779150346
- Cybersecurity and Infrastructure Security Agency CyberSecurity Rating page: https://www.rankiteo.com/company/cisagov
- Cybersecurity and Infrastructure Security Agency Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/cisnig1779150346-nightwing-cybersecurity-and-infrastructure-security-agency-breach-may-2026/
- Cybersecurity and Infrastructure Security Agency CyberSecurity Score History: https://www.rankiteo.com/company/cisagov/history
- Cybersecurity and Infrastructure Security Agency CyberSecurity Incident Source: https://krebsonsecurity.com/2026/05/cisa-admin-leaked-aws-govcloud-keys-on-github/
- 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