How much was lost in the Fusion by IPOR hack?

The Fusion by IPOR hack resulted in $336K in losses on January 06, 2026.

What attack technique was used in the Fusion by IPOR exploit?

The Fusion by IPOR exploit utilized EIP-7702 Delegation Exploit. 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.

Fusion by IPOR Hack

TOTAL LOST $336K

Low Jan 06, 2026 EIP-7702 Delegation Exploit arbitrum

Affected Chain arbitrum Incident surface

Recovered - No recovery reported

All-Time Rank #1109 By amount stolen

Auditors 1 Prior security audit

Incident Overview

Fusion (by IPOR) is a meta DeFi aggregation, execution & intelligence engine that introduces a unified liquidity framework for on-chain asset management. Fusion combines various aggregation and routing protocols into a single smart contract layer, automating asset management and maximizing returns across yield sources. Imagine intelligence-driven execution for looping, carry trades, arbitrage, leveraged farming, and passive lending at your fingertips

Incident Report

Protocol / Project Fusion by IPOR

Date of Incident January 06, 2026

Affected Chain(s) arbitrum

Attack Technique EIP-7702 Delegation Exploit

Classification Protocol Logic

Primary Source View Post-Mortem

Protocol Information

Protocol Type Yield Aggregator

Smart Contract Language Solidity

Official Website app.ipor.io/fusion

Protocol Twitter/X @ipor_io

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 eip-7702 delegation exploit and Solidity and EVM internals

Capital Required Seed capital to cover gas and initial position setup

On-Chain Access Ability to interact with arbitrum smart contracts and deploy a custom exploit contract

Protocol Analysis Identification of the exploitable vulnerability in Fusion by IPOR'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 EIP-7702 Delegation Exploit audit checklist and test coverage

Audited by Audit Report 1 — still lost $336K. Prior audits don't guarantee safety, especially after post-audit code changes.

If you're auditing a protocol with similar architecture to Fusion by IPOR, these are the critical security checks that could have prevented this incident (January 2026).

Verify all logic paths related to EIP-7702 Delegation Exploit 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.

Free Trial

Security Audit History

Audit Report 1 Report

Sources & References

01
Source 1 https://x.com/CertiKAlert/status/2008740020933578906

Threat Assessment

Severity Level

LOW

Attack Vector EIP-7702 Delegation Exploit
Root Cause Protocol Logic
Year 2026

Learn to Prevent the Next Fusion by IPOR

The Fusion by IPOR hack is one of many attacks that skilled auditors are trained to detect before deployment. Master real exploit patterns and defense techniques with hands-on Web3 security training.

Start Free Trial Browse Attack Library