What is Yoroi wallet and what happened to it?

Yoroi wallet was a light wallet for Cardano's ADA built by EMURGO, one of Cardano's founding organizations. It let users hold ADA and Cardano tokens, stake them and connect to apps. In 2026 it was rebranded as SecondFi and then wound down after a security incident, so it is no longer a wallet to set up from scratch.

What was the Cardano wallet Yoroi?

EMURGO described Yoroi as an open-source light wallet. Rather than downloading Cardano's full history, it looked up balances from outside servers, which kept syncing fast. It ran on phones and as a desktop browser extension, supported Ledger and Trezor hardware wallets, and held Cardano native tokens. The extension included a connector for Cardano apps.

On April 22, 2026, EMURGO announced that Yoroi was becoming SecondFi, a self-custody app aimed at spending, trading and saving. The existing app simply updated to the new name, and delegations stayed the same.

How did you stake Cardano with Yoroi?

Yoroi had a delegation screen that listed stake pools. Choosing one sent a delegation transaction, and the rewards history showed up in the app. On Cardano, delegated ADA stays in the wallet and remains spendable, with no lock-up. Cardano.org says a delegation made in one epoch becomes active two epochs later, and first rewards arrive about 15 to 20 days after delegating. Our guide on how to stake Cardano covers the process in other wallets.

SecondFi's migration tool unstakes the ADA it moves, which ends stake pool and DRep delegations. They have to be set up again in the new wallet.

Is Yoroi wallet safe?

Between June 21 and 23, 2026, attackers stole about 16.1 million ADA from 374 SecondFi wallets. According to CoinDesk and ForkLog, a flaw in the wallet's signing software let attackers recover private key material from data published on the blockchain. The Cardano network itself was not compromised, and hardware wallet users were not affected.

On July 22, 2026, SecondFi said it would not resume normal operations, and EMURGO said it would cease operating SecondFi and Yoroi. An asset recovery tool launched on October 7, 2026.

What should Yoroi extension users do now?

SecondFi's help center says users should move all assets to a new Cardano wallet they control, using the migration tool inside the official app or extension, one wallet at a time. It advises keeping the old app installed and not reusing old wallets. Users who connected a hardware wallet can skip the migration and open that same wallet through another provider.

The company says only its official recovery tool may ask for a seed phrase, and that recovery is free. Anyone else asking for the phrase is attempting theft, as explained in what are crypto recovery scams.