Claude Pirate: Abusing Anthropic's File API For Data Exfiltration
highnewsLLM-Specific
security
Source: Embrace The RedOctober 28, 2025
Summary
Anthropic added network request capabilities to Claude's Code Interpreter, which creates a security risk for data exfiltration (unauthorized stealing of sensitive information). An attacker, either controlling the AI model or using indirect prompt injection (hidden malicious instructions in a document the AI processes), could abuse Anthropic's own APIs to steal data that a user has access to, rather than using typical methods like hidden links.
Classification
Attack Type
Data ExtractionPrompt Injection
Attack SophisticationModerate
Impact (CIA+S)
confidentiality
Affected Vendors
Anthropic
Related Issues
Original source: https://embracethered.com/blog/posts/2025/claude-abusing-network-access-and-anthropic-api-for-data-exfiltration/
First tracked: February 12, 2026 at 02:20 PM
Classified by LLM (prompt v3) · confidence: 92%