FDO Hack

TOTAL LOST $160K
Low Other

Summarize with AI

ChatGPT Perplexity Claude Grok
Affected Chain 2022 Incident surface
Recovered - No recovery reported
All-Time Rank #1375 By amount stolen
Protocol Type Exploit/Other Target category

Incident Overview

Quick Summary

FDO token slippage happened on PancakeSwap. The attacker took 96,000 $FDO tokens from the project's vault contract and sold them for 160,441 $USD

Details of the Exploit

FDO is a BEP20 token and can't be confused with other tokens with the same symbol. The EOA address claimed 96,000 $FDO from the project's vault smart contract with unverified source code. Consequently, the attacker sold them on PancakeSwap for 160,441 $BUSD and transferred them to another EOA address.

The relationship between the attacker and the project's team is not approved.

Block Data Reference

Attacker address:

https://bscscan.com/address/0x04718c58…6112F6

Funds transferred to:

https://bscscan.com/address/0xf5c54392…c61c1c

Malicious transaction:

https://bscscan.com/tx/0xa31bdcfa…9b2620

Incident Report

Protocol / Project FDO
Date of Incident
Attack Technique Other
Classification Token
Primary Source View Post-Mortem

Protocol Information

Protocol Type Exploit/Other
Affected Token FDO
Team Anonymous
Source Code Unverified

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 other 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 FDO'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? Likely — with a thorough Other audit checklist and test coverage

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

  • Verify all logic paths related to Other 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

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