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intelligence_src_c25d91fa3ad9ae9ac7
observed · 2026-10-12 14:53:03 UTC
available
Fingerprint: 0a2f1bebc7ea800736eafab237a0ddecfb8797a02d23951e8aa80935e2f3446f
intelligence_src_c25d91fa3ad9ae9ac7
observed · 2026-10-12 14:53:03 UTC
A common attack vector that LLM apps face is data exfiltration, in particular data exfiltration via Image Markdown Injection is a common vulnerability. Microsoft fixed the vulnerability in Bing Chat, ChatGPT is still vulnerable as Open AI “won’t fixed” the issue, and Anthropic just mitigated this vulnerability in Claude. This post documents the Anthropic Claude data exfiltration vulnerability and the mitigation put in place. The Vulnerability - Image Markdown Injection As a quick recap, imagine a large language model (LLM) returns the following text:
Fingerprint: fde8cf8881d8dc2dbaa29342b4761090b5d6f0e8d3fdf32129d077f8bfe969d5