dYdX
Hack or exploit on Nov 27, 2021 · Contract Vulnerability
What happened
DeFi Derivatives Agreement dYdX released an investigation report on the deposit contract accident on November 27, stating that there has been a serious loophole in the agent smart contract that has been handling deposits to the dYdX exchange since November 24. At around 12:00 UTC on the 27th, dYdX The team performed a white hat hacking operation to save vulnerable user funds, totaling approximately US$2 million. These funds are sent to a non-custodial escrow contract, and only the original owner of these funds can retrieve them. However, when the dYdX team performed the white hat hacking operation, an estimated $211,000 of funds was used by the MEV robot, and the user has now been fully compensated.
Details
- Date
- Nov 27, 2021
- Kind
- Hack or exploit
- Method
- Contract Vulnerability
- How in
- Smart contract bug
- Target
- not stated
- Chains
- Ethereum
After the theft
- Victims reimbursed
- yes, amount not stated
“However, when the dYdX team performed the white hat hacking operation, an estimated $211,000 of funds was used by the MEV robot, and the user has now been fully compensated.” (SlowMist Hacked)
Reported by
Related incidents
SwanBluechip, "dYdX hack, Nov 27, 2021: $211K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht5d6a0472d8/ (data as of 2026-11-01).