Hack history / 2021 / Hack or exploit
RAI Finance
Hack or exploit on Jul 4, 2021 · Affected by ChainSwap Attack
ONE SOURCE · 1 SOURCE
Lost
$414K
dollars at the time
Returned
none listed
as the sources state it
Rank
#1,208
among thefts by dollars lost
What happened
RAI Finance, a cross-chain transaction protocol based on the Polkadot blockchain, issued a post stating that due to the vulnerability of the ChainSwap smart contract, the RAI access and payment permission addresses connected to it were also hacked and stolen. The total amount of stolen RAI in the account reached 2.9 million. On July 5, Rai Finance tweeted that after investigation by the team, hackers had returned 2.2 million RAIs to ChainSwap Deployer. The total loss caused by this incident was reduced to 670,000 RAI.
Details
- Date
- Jul 4, 2021
- Kind
- Hack or exploit
- Method
- Affected by ChainSwap Attack
- How in
- Bridge and cross-chain
- Target
- not stated
- Chains
- Polkadot
Reported by
Cite this page
SwanBluechip, "RAI Finance hack, Jul 4, 2021: $414K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht9cfbb55d77/ (data as of 2026-11-01).