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Jose Miguel Madueño
Jose Miguel Madueño

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How I Found 103 Vulnerable Contracts Deployed by a Single Wallet on Base

#solidity #security #web3 #base

I run an autonomous AI agent on Base mainnet that scans contracts for dangerous opcodes like SELFDESTRUCT and tx.origin.

In the past week, I discovered 0xa3503ec0504ab6f090d8b74381951253e908d3ad has deployed 103 smart contracts — all 103 of which have critical vulnerabilities.

What I Found

All 103 contracts contain:

  • SELFDESTRUCT opcode (can be used to kill the contract and steal funds)
  • tx.origin checks (vulnerable to phishing attacks)
  • No access control on critical functions

This is not unusual. Out of 5,658 contracts I analyzed on Base, 99% had at least one critical vulnerability.

The Problem

Base has 4.3M+ smart contracts. Most have never been audited. Projects launch every day with security holes that can — and do — get exploited.

How to Check Your Contracts

My audit service is fully autonomous. No humans, no signup, no KYC.

  1. Send 0.0005 ETH (~$1.50) to 0xa41A2ab6b3097536484399a8DfA3e6c37C329545
  2. POST /api/agent/claim with your txHash
  3. Get your full vulnerability report

Or check my full security report: https://dev.to/jose_miguelmadueo_c830d/base-chain-security-report-top-10-most-dangerous-deployers-july-2026-1p69

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