FutureSwap Hack

TOTAL LOST $270K
Low Flashloan Governance Attack ethereum

Summarize with AI

Affected Chain ethereum Incident surface
Recovered - No recovery reported
All-Time Rank #1183 By amount stolen
Auditors 1 Prior security audit

Incident Overview

Futureswap is a decentralized perpetuals exchange governed by the community.

Incident Report

Protocol / Project FutureSwap
Date of Incident
Affected Chain(s) ethereum
Attack Technique Flashloan Governance Attack
Classification Protocol Logic
Primary Source View Post-Mortem

Protocol Information

Protocol Type Derivatives
Smart Contract Language Solidity
Official Website www.futureswap.com/
Protocol Twitter/X @futureswapx

Market Context at Time of Hack

Token Price at Hack $0.00044827
Market Cap at Hack $16K
% of Market Cap Stolen 100.00%
Token Categories
Decentralized Exchange (DEX) Exchange-based Tokens Decentralized Finance (DeFi) Derivatives Perpetuals Arbitrum Ecosystem Ethereum Ecosystem

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 flashloan governance attack and Solidity and EVM internals
Capital Required Seed capital to cover gas and initial position setup
On-Chain Access Ability to interact with ethereum smart contracts and deploy a custom exploit contract
Protocol Analysis Identification of the exploitable vulnerability in FutureSwap's contract logic - root cause: protocol logic
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 Flashloan Governance Attack audit checklist and test coverage
Audited by Audit Report 1 — still lost $270K. Prior audits don't guarantee safety, especially after post-audit code changes.

If you're auditing a protocol with similar architecture to FutureSwap, these are the critical security checks that could have prevented this incident (December 2025).

  • Verify all logic paths related to Flashloan Governance Attack are guarded by proper access controls and input validation - see the Flash Loans Attacks attack class for patterns
  • 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

Related Attack Classes

The technique used in this hack maps to these vulnerability classes in our security curriculum:

See all Flash Loans Attacks examples →

Proof-of-Concept Exploits

2 PoCs available

On-Chain Evidence & References

Sources & References

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