CISA Contractor Nightwing Exposed Sensitive Government Credentials on Public GitHub
A public GitHub repository named 'Private-CISA', maintained by a contractor from Nightwing, a government defense contractor, was found to have exposed highly sensitive internal credentials and systems used by the US Cybersecurity and Infrastructure Security Agency (CISA). The repository, publicly accessible from November 13, 2025, until May 18, 2026, contained 844 MB of CISA's internal DevSecOps infrastructure, including administrative credentials for AWS GovCloud accounts, plaintext usernames and passwords for internal CISA systems, SSH keys, and an RSA private key. The contractor reportedly disabled GitHub's default secret-scanning push protections. Public reporting and analysis of the exposure occurred around May 18-29, 2026.
Signal context
First seen: May 29, 2026
Last updated: Jun 24, 2026
Status: Public signal
Key points
- Public GitHub repository 'Private-CISA' maintained by a Nightwing contractor.
- Exposed 844 MB of CISA's internal DevSecOps infrastructure.
- Included AWS GovCloud credentials, plaintext passwords, SSH keys, RSA private key.
Signal analysis
BetaThis analysis groups the signal by industry, likely incident action and impacted security area. It helps compare this signal with other published signals without treating the labels as final determinations.
Sector: Public Administration
Likely country: 🇺🇸 US
inferred from signal text
The feed marks multiple actor roles. Treat this as a review signal rather than a final attribution.
- Source type: outside the affected organization
- Source type: possible insider or internal misuse
Impact area: Confidentiality
Likely asset: User or customer data, Server or cloud data store
- 2 signals in the same sector
- 90 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
Top 5 Cybersecurity News Stories May 29, 2026 - DIESEChttps://www.diesec.com/blog/top-5-cybersecurity-news-stories-may-29-2026Public source from diesec.com.
CISA Admin Leaked AWS GovCloud Keys on Github - Krebs on Securityhttps://krebsonsecurity.com/2026/05/cisa-admin-leaked-aws-govcloud-keys-on-github/Public source from krebsonsecurity.com.
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