How much was lost in the Luke Dashjr hack?

The Luke Dashjr hack resulted in $3.6M in losses on December 31, 2022.

What attack technique was used in the Luke Dashjr exploit?

The Luke Dashjr exploit utilized Access Control. 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.

Luke Dashjr Hack

TOTAL LOST $3.6M

Medium Dec 31, 2022 Access Control

Affected Chain 2022 Incident surface

Recovered - No recovery reported

All-Time Rank #499 By amount stolen

Protocol Type Exploit/Access control Target category

Incident Overview

Quick Summary

Luke Dashjr's PGP key was compromised, leading to losses worth 3.6M USD.

Details of the Exploit

Luke Dashjr's bitcoin cold wallet was compromised. Potentially it could be malware inside some downloaded app like Bitcoin Knots or Core. The hacker's profit is about 216.93 BTC or $3.6M USD.

Block Data Reference

Some of the bitcoin transfers tx:

https://www.blockchain.com/explorer/transactions/btc/432ded946431a9612f09d73bd15ded045d11d1095ffdfe8d68306ea9b2e78930

https://www.blockchain.com/explorer/transactions/btc/c38a3210fbb758cfc41d9a64b7534b83aecca96f051231f15545e8e5c7365190

https://www.blockchain.com/explorer/transactions/btc/4b3cde50e2bce3d02e15b61957d2452e29f53d9a99e1ab14e83b6ec0f87fd851

https://www.blockchain.com/explorer/transactions/btc/50df1eab0bf2bd01999cea4fc531a65c17e1a285823c9ae4eab0feb7e21a11b6

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

Incident Report

Protocol / Project Luke Dashjr

Date of Incident December 31, 2022

Attack Technique Access Control

Classification Other

Primary Source View Post-Mortem #1 View Post-Mortem #2

Protocol Information

Protocol Type Exploit/Access control

Protocol Twitter/X @LukeDashjr

Team Public / Doxxed

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 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 Luke Dashjr'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 audit checklist and test coverage

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

Verify all logic paths related to Access Control 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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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

01
Source 1 https://cointelegraph.com/news/bitcoin-core-developer-claims-to-…
02
Source 2 https://twitter.com/LukeDashjr/status/1609613748364509184?ref_sr…

Threat Assessment

Severity Level

MEDIUM

Attack Vector Access Control
Root Cause Other
Year 2022

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