How much was lost in the Terra 2.0 hack?

The Terra 2.0 hack resulted in $5.0M in losses on July 31, 2024.

What attack technique was used in the Terra 2.0 exploit?

The Terra 2.0 exploit utilized IBC hooks exploit. 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.

Terra 2.0 Hack

TOTAL LOST $5.0M

Medium Jul 31, 2024 IBC hooks exploit terra2

Affected Chain terra2 Incident surface

Recovered - No recovery reported

All-Time Rank #425 By amount stolen

Year 2024 Incident year

Incident Overview

Tedra USD 2.0 (USD.T) is a cryptocurrency launched in 2025and operates on the Ethereum platform. Tedra USD 2.0 has a current supply of 100,000,000,000 with 0 in circulation. The last known price of Tedra USD 2.0 is 1.01848592 USD and is up 0.60 over the last 24 hours.

It is currently trading on 4 active market(s) with $51,546.17 traded over the last 24 hours. More information can be found at https://tedrausd.com/.

Incident Report

Protocol / Project Terra 2.0

Date of Incident July 31, 2024

Affected Chain(s) terra2

Attack Technique IBC hooks exploit

Classification Infrastructure

Primary Source View Post-Mortem

Protocol Information

Smart Contract Language Golang

Official Website tedrausd.com/

Protocol Twitter/X @Tedrausdoficial

Market Context at Time of Hack

Token Categories

Memes Ethereum Ecosystem Polygon Ecosystem Arbitrum Ecosystem BNB Chain Ecosystem

Protocol Links

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 ibc hooks exploit and Solidity and EVM internals

Capital Required Seed capital to cover gas and initial position setup

On-Chain Access Ability to interact with terra2 smart contracts and deploy a custom exploit contract

Protocol Analysis Identification of the exploitable vulnerability in Terra 2.0's contract logic - root cause: infrastructure

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 IBC hooks exploit audit checklist and test coverage

If you're auditing a protocol with similar architecture to Terra 2.0, these are the critical security checks that could have prevented this incident (July 2024).

Verify all logic paths related to IBC hooks exploit 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://medium.com/@Rarma_/terra-ibc-hooks-exploit-21cca87d70a4

Threat Assessment

Severity Level

MEDIUM

Attack Vector IBC hooks exploit
Root Cause Infrastructure
Year 2024

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