Wallet Firewall: A Pre-Signing Security Layer for EVM Wallets

Описание и применение

Wallet Firewall предотвращает случайные переводы средств, анализируя транзакции до их подписи и выдавая понятные пользователю решения.

Задача

Users often sign malicious EVM transactions unknowingly, leading to fund loss.

Результат

Wallet Firewall prevents accidental signing of risky transactions by providing pre‑signing analysis and user‑friendly explanations, reducing potential fund loss.

Рабочий процесс

• Decode raw calldata to function selectors
• Fetch contract bytecode, balance, and nonce (Intel)
• Simulate transaction with eth_call to catch reverts
• Score risk deterministically (0‑100) with hard blocks
• Translate findings to plain English via LLM
• Gate sign button if verdict is BLOCK

Доказательства

Wallet Firewall solves this, before you sign, it decodes the transaction, checks the contract, and scores the risk.

Источник

It returns one of three verdicts: SAFE, REVIEW, or BLOCK. Each verdict comes with a plain‑language explanation, so you know exactly why a transaction is dangerous before your funds leave your wallet.

Источник

The AI Part: Security tools cannot rely on LLMs to make final decisions, because LLMs hallucinate and are non‑deterministic. Wallet Firewall uses a deterministic risk engine (hardcoded HARD_BLOCK signals and a 0‑100 scoring system) to give the final say.

Источник