fix: security hardening — nonce validation + exam prompt guard#51
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fix: security hardening — nonce validation + exam prompt guard#51
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… exam prompt guard - Add __nonce__ to all bridge response messages (TRANSLATE/VERIFY/CHAT/STREAM) - Validate nonce on all response handlers in translator.js (prevents spoofing) - Replace sequential integer request IDs with crypto.randomUUID() (unpredictable) - Add CRITICAL exam guard to Claude system prompt when isExamPage is true - Pass isExamPage flag from sidebar-chat to chatStream Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
__nonce__, validated on receipt in translator.js — prevents page scripts from spoofing translation/chat responsescrypto.randomUUID()— unpredictable, cannot be guessed by attackersTest plan
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