How much was lost in the FIO Protocol hack?

The FIO Protocol hack resulted in $59K in losses on August 14, 2022.

What attack technique was used in the FIO Protocol exploit?

The FIO Protocol 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.

FIO Protocol Hack

TOTAL LOST $59K

Low Aug 14, 2022 Rugpull

Affected Chain 2022 Incident surface

Recovered - No recovery reported

All-Time Rank #1683 By amount stolen

Auditors 1 Prior security audit

Incident Overview

Quick Summary

The $FIO token has been rug pulled by its team. The team made away with $57k in profits.

Details of the Exploit

The token deployer added the liquidity pair USDT/FIO in this transaction: https://polygonscan.com/tx/0xc97c548b…d4ddd1

Then the token deployer removed liquidity taking profit ~$60k: https://polygonscan.com/tx/0x4493eb21…bb0a5e

Block Data Reference

Involved addresses:

- Scammer address, token deployer: https://polygonscan.com/address/0x7bf7d0cf…583ebc

Incident Report

Protocol / Project FIO Protocol

Date of Incident August 14, 2022

Attack Technique Rugpull

Classification Token

Primary Source View Post-Mortem

Protocol Information

Protocol Type RWA

Affected Token FIO

Official Website afiprotocol.xyz/

Protocol Twitter/X @afiprotocol_xyz

Team Anonymous

Source Code Unverified

Market Context at Time of Hack

Token Categories

Collectibles & NFTs DeFi Wallet Binance Ecosystem Binance Listing

Protocol Links

GitHub Discord Reddit

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 FIO Protocol'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

Audited by Audit Report 1 — still lost $59K. Prior audits don't guarantee safety, especially after post-audit code changes.

If you're auditing a protocol with similar architecture to FIO Protocol, these are the critical security checks that could have prevented this incident (August 2022).

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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Security Audit History

Audit Report 1 Report

Sources & References

01
Source 1 https://dexscreener.com/polygon/0xd2f65b18f2420a9cb3a096404fc586…

Threat Assessment

Severity Level

LOW

Attack Vector Rugpull
Root Cause Token
Year 2022

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