How much was lost in the Not Found hack?

The Not Found hack resulted in $200K in losses on February 08, 2024.

What attack technique was used in the Not Found exploit?

The Not Found exploit utilized Rugpull. Understanding this attack vector is critical for smart contract auditors and developers building secure DeFi protocols.

How can developers prevent similar smart contract attacks?

Preventing smart contract hacks requires a combination of secure coding practices, thorough security audits, and understanding common attack vectors like reentrancy, oracle manipulation, and access control flaws. Smart Contract Hacking (SCH) provides hands-on training to help developers and auditors identify and prevent vulnerabilities before deployment.

Not Found Hack

TOTAL LOST $200K

Low Feb 08, 2024 Rugpull

Affected Chain 2024 Incident surface

Recovered - No recovery reported

All-Time Rank #1306 By amount stolen

Protocol Type Exit Scam/Rugpull Target category

Incident Overview

Quick Summary

Not Found (404) token rugpull by deployer, liquidity removed from UniSwap pool, resulting in a loss of 199,927 USD.

Details of the Exploit

Not Found, an ERC-20 token trading on UniSwap, experienced an exit scam when its deployer swapped a significantly larger number of tokens, depleting the liquidity. The deployer then called "TokenURI" and inflated the amount of 404 tokens. A portion of the stolen funds was transferred to other EOAs and deposited into FixedFloat, while the majority was bridged to the Arbitrum chain through Orbiter Finance.

The scammer received funding from OKX. The total loss amounts to 199,927 USD, equivalent to 82.38 WETH.

Block Data Reference

Scammer Address:

https://etherscan.io/address/0x3a6d1143…30C921

Malicious Transactions:

https://etherscan.io/tx/0xe6c3bfdd…d3f0cd

https://etherscan.io/tx/0x99cda6c9…15e127

FixedFloat Deposit Transactions:

https://etherscan.io/tx/0x84dad5f8…f59dbc

https://etherscan.io/tx/0xcf7a2853…db85ca

Orbiter Finance Bridge Transactions:

https://etherscan.io/tx/0x3e20376f…e2a171

https://etherscan.io/tx/0x679a4b00…6a397f

Incident Report

Protocol / Project Not Found

Date of Incident February 08, 2024

Attack Technique Rugpull

Classification Token

Primary Source View Post-Mortem

Protocol Information

Protocol Type Exit Scam/Rugpull

Affected Token 404

Official Website ant.fun

Protocol Twitter/X @ant_fun_trade

Team Anonymous

Source Code Verified On-Chain

Market Context at Time of Hack

Token Categories

Decentralized Exchange (DEX) Token DeFi Solana Ecosystem BNB Chain Ecosystem

Protocol Links

What the Attacker Needed to Succeed

Understanding the prerequisites for this type of attack helps auditors identify protocols that are most at risk and helps developers build better defenses.

Technical Knowledge Deep understanding of rugpull and Solidity and EVM internals

Capital Required Seed capital to cover gas and initial position setup

On-Chain Access Ability to interact with smart contracts and deploy a custom exploit contract

Protocol Analysis Identification of the exploitable vulnerability in Not Found's contract logic - root cause: token

Execution Speed Precise transaction ordering and timing to exploit the vulnerability within a single atomic block

Obfuscation Plan A strategy to launder and move stolen funds - typically through mixers, cross-chain bridges, or decentralized DEX swaps to resist tracing

What Auditors Should Check

Could this have been caught in audit? Hard to catch — private key / OpSec failures are outside smart contract audit scope

If you're auditing a protocol with similar architecture to Not Found, these are the critical security checks that could have prevented this incident (February 2024).

Verify all logic paths related to Rugpull are guarded by proper access controls and input validation
Review privileged functions (owner, admin, governance) for potential abuse vectors - centralization risks should be documented and bounded with timelocks or multi-sigs

Master these auditing techniques with hands-on labs and real exploit scenarios in the Smart Contract Hacking course.

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Sources & References

01
Source 1 https://twitter.com/CertiKAlert/status/1755960658762338479

Threat Assessment

Severity Level

LOW

Attack Vector Rugpull
Root Cause Token
Year 2024

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