How much was lost in the Kame Aggregator hack?

The Kame Aggregator hack resulted in $1.3M in losses on September 12, 2025.

What attack technique was used in the Kame Aggregator exploit?

The Kame Aggregator exploit utilized swap() Function Flaw. 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.

Kame Aggregator Hack

TOTAL LOST $1.3M

Medium Sep 12, 2025 swap() Function Flaw sei

Affected Chain sei Incident surface

Recovered - No recovery reported

All-Time Rank #771 By amount stolen

Protocol Type DEX Aggregator Target category

Incident Overview

Kame Aggregator scours all liquidity sources on Sei Ecosystem to secure the best exchange rates for users

Incident Report

Protocol / Project Kame Aggregator

Date of Incident September 12, 2025

Affected Chain(s) sei

Attack Technique swap() Function Flaw

Classification Protocol Logic

Primary Source View Post-Mortem

Protocol Information

Protocol Type DEX Aggregator

Official Website kame.ag/

Protocol Twitter/X @kame_agg

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 swap() function flaw and Solidity and EVM internals

Capital Required Seed capital to cover gas and initial position setup

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

Protocol Analysis Identification of the exploitable vulnerability in Kame Aggregator'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 swap() Function Flaw audit checklist and test coverage

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

Verify all logic paths related to swap() Function Flaw 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://x.com/kame_agg/status/1967782820589568114

Threat Assessment

Severity Level

MEDIUM

Attack Vector swap() Function Flaw
Root Cause Protocol Logic
Year 2025

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