How much was lost in the D4ppdao Token hack?

The D4ppdao Token hack resulted in $12K in losses on January 06, 2021.

What attack technique was used in the D4ppdao Token exploit?

The D4ppdao Token exploit utilized Rugpull. 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.

D4ppdao Token Hack

TOTAL LOST $12K

Low Jan 06, 2021 Rugpull ethereum

Affected Chain ethereum Incident surface

Recovered - No recovery reported

All-Time Rank #1933 By amount stolen

Protocol Type Exit Scam/Rugpull Target category

Incident Overview

The contract deployer minted tokens onto his wallet:

https://etherscan.io/tx/0x8af30c92…fde2de

The contract deployer distributed big tokens amount to some external wallets:

https://etherscan.io/tx/0x8c515c1b…14e471

https://etherscan.io/tx/0x8c04161c…6bbb07

The contract deployer added initial liquidity at:

https://etherscan.io/tx/0x9ff9cd26…76e93c

The token recipients have sold tokens after the liquidity was added, examples:

https://etherscan.io/tx/0x3f52d418…779b60

https://etherscan.io/tx/0x59e38b27…55c589

https://etherscan.io/tx/0x7b95e15e…e54a3f

The contract deployer has sold tokens as well:

https://etherscan.io/tx/0x57c4d5b9…206752

https://etherscan.io/tx/0x758d0478…b4cb38

https://etherscan.io/tx/0xc08a703d…4f0f65

Incident Report

Protocol / Project D4ppdao Token

Date of Incident January 06, 2021

Affected Chain(s) ethereum

Attack Technique Rugpull

Classification Token

Primary Source View Post-Mortem

Protocol Information

Protocol Type Exit Scam/Rugpull

Affected Token D4PP

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 rugpull 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 D4ppdao Token's contract logic - root cause: token

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? Hard to catch — private key / OpSec failures are outside smart contract audit scope

If you're auditing a protocol with similar architecture to D4ppdao Token, these are the critical security checks that could have prevented this incident (January 2021).

Verify all logic paths related to Rugpull 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://twitter.com/CaptainJackAPE/status/1348863755870900228

Threat Assessment

Severity Level

LOW

Attack Vector Rugpull
Root Cause Token
Year 2021

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