How much was lost in the Elastic Staking hack?

The Elastic Staking hack resulted in $209K in losses on January 26, 2021.

What attack technique was used in the Elastic Staking exploit?

The Elastic Staking 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.

Elastic Staking Hack

TOTAL LOST $209K

Low Jan 26, 2021 Rugpull ethereum

Affected Chain ethereum Incident surface

Recovered - No recovery reported

All-Time Rank #1279 By amount stolen

Protocol Type Exit Scam/Rugpull Target category

Incident Overview

The contract deployer minted tokens onto his wallet:

https://etherscan.io/tx/0x5f767b81…783b15

The contract deployer airdropped tokens to the community members at:

https://etherscan.io/tx/0xe1faff1c…2631e3

https://etherscan.io/tx/0x563523b4…92fd64

https://etherscan.io/tx/0xc9c4771b…40ed6c

When the liquidity was raised enough, the contract deployer invoked bytecode smart contract through the 0x8a4995ae method 3 times to mint additional tokens onto his wallet:

https://etherscan.io/tx/0xd08a5d8a…6b491e

https://etherscan.io/tx/0xdd255f83…d6a85d

https://etherscan.io/tx/0xb0f8eedc…0cd4c5

The minted tokens were sold by the contract deployer at:

https://etherscan.io/tx/0xb5a83eed…9aa32e

https://etherscan.io/tx/0x5e315dee…2cb124

https://etherscan.io/tx/0xb0f7e4d5…c8e77f

https://etherscan.io/tx/0xc8e7050c…78e8ca

Incident Report

Protocol / Project Elastic Staking

Date of Incident January 26, 2021

Affected Chain(s) ethereum

Attack Technique Rugpull

Classification Yield Aggregator

Primary Source View Post-Mortem

Protocol Information

Protocol Type Exit Scam/Rugpull

Affected Token EStake

Official Website estake.io/

Protocol Twitter/X @ElasticStake

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 Elastic Staking's contract logic - root cause: yield aggregator

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 Elastic Staking, 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://estake.io/

Threat Assessment

Severity Level

LOW

Attack Vector Rugpull
Root Cause Yield Aggregator
Year 2021

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