How much was lost in the UniTarget hack?

The UniTarget hack resulted in $71K in losses on December 25, 2020.

What attack technique was used in the UniTarget exploit?

The UniTarget 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.

UniTarget Hack

TOTAL LOST $71K

Low Dec 25, 2020 Rugpull ethereum

Affected Chain ethereum Incident surface

Recovered - No recovery reported

All-Time Rank #1631 By amount stolen

Protocol Type Exit Scam/Rugpull Target category

Incident Overview

The project was holding a presale event. The fund's recipient was the contract deployer:

https://etherscan.io/txs?a=0xbf6b0f0d…111136&p=2

After the presale, the contract deployer added initial liquidity at:

https://etherscan.io/tx/0x03c23588…70d0e8

The LP tokens were locked by the contract deployer:

https://etherscan.io/tx/0x77d8139a…9e57a5

The rest of the funds were deposited into the Tornado Cash mixer:

https://etherscan.io/tx/0xcd09235d…3b1873

https://etherscan.io/tx/0x52fd5e60…2f660d

After the LP tokens were unlocked, the liquidity was removed by the contract deployer at:

https://etherscan.io/tx/0xbcde68e5…650cf5

Incident Report

Protocol / Project UniTarget

Date of Incident December 25, 2020

Affected Chain(s) ethereum

Attack Technique Rugpull

Classification Token

Primary Source View Post-Mortem

Protocol Information

Protocol Type Exit Scam/Rugpull

Affected Token UNIT

Official Website unitarget.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 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 UniTarget'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 UniTarget, these are the critical security checks that could have prevented this incident (December 2020).

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/DetectivesRug/status/1341747678598860800

Threat Assessment

Severity Level

LOW

Attack Vector Rugpull
Root Cause Token
Year 2020

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