How much was lost in the FDB hack?

The FDB hack resulted in $104K in losses on October 15, 2022.

What attack technique was used in the FDB exploit?

The FDB 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.

FDB Hack

TOTAL LOST $104K

Low Oct 15, 2022 Rugpull

Affected Chain 2022 Incident surface

Recovered - No recovery reported

All-Time Rank #1519 By amount stolen

Protocol Type Exit Scam/Rugpull Target category

Incident Overview

Quick Summary

FDB token was rugpulled by the deployer-related EOA address. The total profit of the scammer reached 103,540 $USD.

Details of the Exploit

FDB is a BEP20 token trading on PancakeSwap. The deployer-related EOA address drained liquidity for the total amount of 103,540 $USD. The scammer transferred 30,000 $BUSD to other addresses, and the remaining 12,861 $BUSD and 221.7 $BNB stay at the original address.

Block Data Reference

Scammer address:

https://bscscan.com/address/0x485ba16c…abecb9

Liquidity drain transactions:

https://bscscan.com/txsInternal?a=0x485ba16c…abecb9

https://bscscan.com/token/0x55d39832…197955?a=0x485ba16c…abecb9

Incident Report

Protocol / Project FDB

Date of Incident October 15, 2022

Attack Technique Rugpull

Classification Token

Primary Source View Post-Mortem

Protocol Information

Protocol Type Exit Scam/Rugpull

Affected Token FDB

Team Anonymous

Source Code Verified On-Chain

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 FDB'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 FDB, these are the critical security checks that could have prevented this incident (October 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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Sources & References

01
Source 1 https://twitter.com/CertiKAlert/status/1581124013966827520

Threat Assessment

Severity Level

LOW

Attack Vector Rugpull
Root Cause Token
Year 2022

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