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6/17/2026
Developer builds Chrome phishing detector with Claude Haiku, hits 96% accuracy

Developer builds Chrome phishing detector with Claude Haiku, hits 96% accuracy

Original: I built a phishing detector into Chrome using Claude AI. Here's exactly how.

Short summary

Developer built a Chrome extension that detects phishing emails using Claude Haiku via Cloudflare Worker, achieving 96% accuracy (48/50 correct) on real phishing attempts. The tutorial explains the architecture pattern, prompt engineering strategy, and why Haiku was chosen over Opus for this classification task. Full source code is available for download.

  • •Chrome extension detects phishing with 96% accuracy using Claude Haiku API
  • •Architecture uses extension → Cloudflare Worker → Claude API pattern
  • •Practical tutorial with code examples and prompt engineering details

Generated with AI, which can make mistakes.

#ai-tools#certification-education#product-launch
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