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Sneaking Invisible Instructions by Developers in Windsurf

infoembracetheredPublished 2025-08-23

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<p>Imagine a malicious instruction hidden in plain sight, invisible to you but not to the AI. This is a vulnerability discovered in Windsurf Cascade, it follows invisible instructions. This means there can be instructions in a file or result of a tool call that the developer cannot see, but the LLM does.</p> <p><a href="https://embracethered.com/blog/images/2025/episode23-yt.

MITRE ATT&CK techniques

Original source: https://embracethered.com/blog/posts/2025/windsurf-sneaking-invisible-instructions-for-prompt-injection/