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16 fake Rabby and OKX Wallet add-ons on Firefox stole recovery phrases and private keys

Firefox users who installed fake Rabby Wallet or OKX Wallet add-ons

Socket found 16 Firefox extensions posing as Rabby Wallet (branded 'Raabby WaIIet') and OKX Wallet ('Portal WALLET'). They captured 12- or 24-word recovery phrases and private keys during the wallet import step and sent them to attacker-run Cloudflare Workers. Mozilla removed them by 5 October 2026, but Socket links them to a crypto-theft extension campaign it first saw in August 2026, so new copies may appear. No loss figure has been published; anyone who imported a seed into one of them should treat that wallet as stolen.

Why this severity: Only partly contained, a narrower target.

Started
Oct 5, 2026

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At risk

  • Firefox users who installed fake Rabby Wallet or OKX Wallet add-ons
  • Multiple EVM chains wallets

What to do now

  • Remove the extension.
  • On a clean device, install the real wallet from the link on its official website, create a new wallet and move all funds there. Changing the extension password does not help, because the seed itself was stolen.
  • After moving funds, revoke token approvals on the old address.

Stay safe

Am I affected?

Only if you installed a Rabby or OKX wallet extension on Firefox from a listing that was not the official one (names like 'Raabby WaIIet' or 'Portal WALLET') and typed a recovery phrase or private key into it.

What to do now

  • Remove the extension.
  • On a clean device, install the real wallet from the link on its official website, create a new wallet and move all funds there. Changing the extension password does not help, because the seed itself was stolen.
  • After moving funds, revoke token approvals on the old address.

How to avoid this

  • Install wallet extensions only from the link on the wallet's official website, and check the publisher name and user count.
  • Watch for spelling tricks such as a capital I in place of a lowercase l, or doubled letters.
  • No real wallet needs you to re-import your seed to fix, verify or update anything.

Timeline 2

  1. Socket published its analysis, linking the add-ons through a shared campaign marker to crypto-theft extensions it found in August 2026.

    Source
  2. Mozilla unpublished the 16 malicious extensions from the Firefox add-ons store.

    Source
News & write-ups ›1

How this method works

A fake wallet extension, or a real extension that was sold or hijacked, reads your seed phrase or swaps transactions as you sign. Read about malicious browser extensions →

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