European Space Agency (ESA) External Servers Breached
The European Space Agency (ESA) confirmed a cybersecurity breach affecting a small number of external servers used for collaborative engineering activities. A threat actor, "888", claimed to have exfiltrated over 200GB of data, including source code, CI/CD pipelines, API and access tokens, confidential documents, configuration files, Terraform files, SQL files, and private Bitbucket repositories. ESA stated that only unclassified data was compromised, with no impact on core mission or classified systems.
Esa
Signal context
First seen: Dec 29, 2025
Last updated: Jun 25, 2026
Status: Public signal
Key points
- Breach affected external servers used for collaborative engineering.
- Threat actor "888" claimed to have exfiltrated over 200GB of data.
- Stolen data includes source code, CI/CD pipelines, API/access tokens, confidential documents, configuration files, Terraform files, SQL files, and private Bitbucket repositories.
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: Professional, Scientific, and Technical Services
Likely country: 🇪🇸 Spain
inferred from source domains
Watch internet-facing systems, credential abuse and exploit activity.
- Source type: outside the affected organization
Impact area: Confidentiality
- 5 signals in the same sector
- 90 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
ESA Says Data Breach Was Limited to Servers with Unclassified Documentshttps://europeanspaceflight.com/esa-says-data-breach-was-limited-to-servers-with-unclassified-documents/Public source from europeanspaceflight.com.
European Space Agency Confirms Breach After Hacker Offers to Sell Data - SecurityWeekhttps://www.securityweek.com/european-space-agency-confirms-breach-after-hacker-offers-to-sell-data/Public source from securityweek.com.
The European Space Agency suffers an incident on external servers | INCIBE-CERThttps://www.incibe-cert.es/en/news/european-space-agency-suffers-incident-external-serversPublic source from incibe-cert.es.
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