Incident Overview
wDAO EON, a DEX project on the Polygon network, was exploited via a flash loan attack resulting in the loss of 29,195 $USD. The initial attacker was front-run by another bot during the exploit.
The wDAO EON project on Polygon suffered an exploit through a flash loan attack that tried to drain their pool. However, this attempt was frontrun by another bot who took out a flash loan from Balancer and used it to manipulate prices on wDAO EON's pool before returning the borrowed funds. As a result, 29,195 $USD was lost in this incident.
Attacker address:
https://polygonscan.com/address/0xcb3585f3…15bb5b
Initial Attacker address:
https://polygonscan.com/address/0xb3d204ee…4b1fdc
Malicious transaction:
https://polygonscan.com/tx/0xa1f2377f…48be6d
Failed transaction (initial attacker):
https://polygonscan.com/tx/0x0ef500ef…fd294d
Malicious contract:
https://polygonscan.com/address/0x3bb7a0f2…90fe93
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 wDAO EON, these are the critical security checks that could have prevented this incident (June 2023).
- Verify all logic paths related to Flash Loan Attack are guarded by proper access controls and input validation - see the Flash Loans 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 wDAO EON
The wDAO EON 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.