Incident Overview
On November 7, 2025, DIMO Network suffered an exploit where an attacker gained unauthorized access to a developer key and withdrew approximately 30 million DIMO tokens (3% of total supply) from a Wormhole bridge contract, selling them for roughly $40,000.
The sophisticated attacker compromised a bridge deployer key that was being used to develop a cross-chain bridge for moving DIMO tokens between Ethereum, Base, Solana, and Polygon networks. Using the compromised admin wallet, the attacker upgraded proxy contract 0x07C64bd1…0ED5dD to a malicious implementation that allowed withdrawal of 30 million DIMO tokens from the Wormhole bridge contract. The stolen tokens were immediately sold for approximately $40,000, representing a significant token dump but relatively modest USD value due to price impact.
One hour after the exploit, the proxy was changed back to its original implementation and ownership was transferred to multisig 0xCED3c922…f4F123. DIMO emphasized that the exploit was isolated to the designated bridge contract and did not impact the DIMO token itself, the broader network, or any user accounts, assets, or data.
Compromised Proxy Contract:
Multisig Address (post-recovery):
Incident Report
Protocol Information
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.
What Auditors Should Check
If you're auditing a protocol with similar architecture to DIMO, these are the critical security checks that could have prevented this incident (November 2025).
- Verify all logic paths related to Private Key Compromised / 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.
Free TrialRelated Attack Classes
The technique used in this hack maps to these vulnerability classes in our security curriculum:
Sources & References
Learn to Prevent the Next DIMO
The DIMO hack is one of many attacks that skilled auditors are trained to detect before deployment. Master real exploit patterns and defense techniques with hands-on Web3 security training.