[KongchangAI]
Unverified50% confidenceFactExact time

Simon Willison documented an attack in which a researcher caused Claude's webfetch tool to leak user names and location information, with the attacker planting honeypot links in crawled pages to trick the tool into automatically exfiltrating data

1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/10/2026
First Seen
Valid until: 1/8/2027

Sources

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https://kongchang.com/claim/993955
API
curl https://kongchang.com/api/v1/knowledge/claims/993955
MCP
get_claim(id=993955)