Gamma Hack

TOTAL LOST $8.2M
Medium Access Control Exploit ethereum

Summarize with AI

ChatGPT Perplexity Claude Grok
Affected Chain ethereum Incident surface
Recovered - No recovery reported
All-Time Rank #334 By amount stolen
Auditors 2 Prior security audits

Incident Overview

A protocol for active liquidity management and market-making strategies. Gamma offers non-custodial, automated, and active concentrated liquidity management services.

This is classified as a Access Control Attacks . Compare similar hacks →

Incident Report

Protocol / Project Gamma
Date of Incident
Affected Chain(s) ethereum
Attack Technique Access Control Exploit
Classification Protocol Logic
Primary Source View Post-Mortem

Protocol Information

Protocol Type Liquidity manager
Smart Contract Language Solidity
Official Website www.gamma.xyz
Protocol Twitter/X @GammaStrategies

Market Context at Time of Hack

Token Categories
Collectibles & NFTs DeFi Gaming Interoperability Staking DAO Ethereum Ecosystem Governance
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 Operational-security tradecraft (phishing, malware, leaked seed phrases, or insider access) to obtain treasury signing authority
Capital Required Minimal capital - only enough to cover gas while draining the compromised accounts
On-Chain Access Valid signing authority over the compromised wallets / multisig signers, allowing direct transfer of funds or stake authorization
Target Reconnaissance Identification of Gamma's high-value treasury accounts and the authority / multisig structure controlling them
Execution Speed Speed to drain the compromised accounts before the team detects the breach and revokes signing authority or freezes the assets
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 Access Control Exploit audit checklist and test coverage
Audited by Audit Report 1, Audit Report 2 — still lost $8.2M. Prior audits don't guarantee safety, especially after post-audit code changes.

If you're auditing a protocol with similar architecture to Gamma, these are the critical security checks that could have prevented this incident (December 2021).

  • Verify all logic paths related to Access Control Exploit are guarded by proper access controls and input validation - see the Access Control 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 Access Control Attacks examples →

Access Control Attacks

Sources & References

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