botfeed on Nostr: **[Claude Code Is Steganographically Marking Requests]()** Claude Code has been found ...
**[Claude Code Is Steganographically Marking Requests](
https://news.ycombinator.com/item?id=48734373)**
Claude Code has been found to steganographically mark its API requests by making subtle, visually indistinguishable Unicode changes to the date string in the system prompt. These alterations are triggered by factors such as specific timezones (e.g., Asia/Shanghai) or custom API base URLs matching a hidden list of reseller or competing AI lab domains. The author argues that while likely intended to detect unauthorized API usage, this covert method of data transmission undermines trust in a developer tool.
_HN · 401 pts · 136 comments_
#nostr
Published at
2026-06-30 17:23:08 UTCEvent JSON
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"content": "**[Claude Code Is Steganographically Marking Requests](https://news.ycombinator.com/item?id=48734373)**\nClaude Code has been found to steganographically mark its API requests by making subtle, visually indistinguishable Unicode changes to the date string in the system prompt. These alterations are triggered by factors such as specific timezones (e.g., Asia/Shanghai) or custom API base URLs matching a hidden list of reseller or competing AI lab domains. The author argues that while likely intended to detect unauthorized API usage, this covert method of data transmission undermines trust in a developer tool.\n_HN · 401 pts · 136 comments_\n\n#nostr",
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