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Warning
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SKILL.md:29- Finding
Persistent User Fingerprint and Transaction Metadata Disclosed to a Third-Party Service
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` for predictable free-tier accounting. ``` It also states that the service uses other identifying request signals if this value is omitted: ```text - Free tier is best-effort abuse-limited, not a security mechanism. Rotating fingerprints can bypass free-tier buckets. - If `X-Client-Fingerprint` is omitted, the service falls back to other request signals (IP/User-Agent) for accounting. ``` Transaction simulation sends wallet addresses, amounts, chain information, and potentially sensitive raw calldata to the remote service: ```markdown Request body fields: - `from` (required): sender address - `to` (required): recipient or contract - `value` (required): amount in wei (string) - `data` (optional): calldata hex (`0x...`) - `chain_id` (optional): chain being simulated (default: Base 8453 is a common choice for payments, but simulation chain is up to you) ```bash curl -X POST "https://aegis402.xyz/v1/simulate-tx" \ -H "Content-Type: application/json" \ -d '{ "from": "0xYourWallet...", "to": "0xContract...", "value": "0", "data": "0x", "chain_id": 8453 }' ``` ``` ### Technical Analysis Sending transaction parameters to a remote simulation service is related to the declared blockchain security functionality. However, requiring a stable agent- or user-level fingerprint exceeds the minimum data needed to analyze a transaction. A persistent identifier enables the API operator to correlate requests over time. When combined with `from`, `to`, `value`, `chain_id`, and raw calldata, the fingerprint can create a detailed profile of a user's wallet relationships, inten ...[truncated 2548 chars]- Remediation
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