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How to check a crypto bridge route for phishing

Bridge phishing often starts before a wallet prompt: verify the site, chains, token, route contracts and approval details before signing or sending funds.

The Blocktape Editors 2 min read 22ea02

Cover artwork for How to check a crypto bridge route for phishing

Check a crypto bridge route by confirming the site, source and destination chains, token, transaction details and wallet request before signing. A route quote shows how a service proposes to move assets; it does not prove that the page displaying it is genuine or that every contract in the route is safe.

Start from a bridge provider’s official site, reached through a bookmark or a trusted source, rather than an ad, unsolicited message or search result. For a fuller walkthrough, this guide to checking Rango bridge routes covers the route review in more detail. The same checks apply to other bridge interfaces.

What should you check in a bridge route?

Compare the route quote with the transfer you intend to make. Check the source chain, destination chain, token on each chain, amount to send and estimated amount to receive; a familiar token name alone does not establish that two assets are the same token.

Read the route’s steps, too. A bridge may use a swap before or after the cross-chain transfer, so the displayed route can include several services or contracts. More steps can mean more fees and more places where execution can fail. A shorter route is not automatically safer, but an unexplained detour deserves a closer look.

  • Confirm both chain names and the direction of travel.
  • Compare the token symbols and contract addresses with the project’s or chain’s official information.
  • Check the quoted output, fees, slippage settings and any minimum received amount.
  • Look for route steps or contract names that the provider does not explain.

How can you tell a bridge page is fake?

A fake page can copy a provider’s logo and layout while using a lookalike domain or changing a small part of the transaction. Check the full domain character by character, including its spelling and ending, and confirm it against the provider’s official channels. A padlock icon only indicates an encrypted connection; it does not show who operates the site.

Recheck the transaction in the wallet before approving it. The wallet prompt should match the action you chose, the account and network you expect, and the amount shown in the route. If the prompt asks for an unlimited token allowance, a contract interaction you did not expect, or a signature whose purpose is unclear, stop and verify the request through the provider’s official help material.

What should you verify before signing?

Read each wallet request separately: a route may require a token approval and then a distinct transaction to start the transfer. An approval lets a contract spend a token up to the stated limit; it is different from the bridge transfer itself. Check the spender and allowance details where the wallet displays them, and do not treat a familiar wallet screen as proof that the request is legitimate.

For contract addresses, use the provider’s official documentation and the relevant chain’s explorer to compare the address and inspect transaction status. Explorers can show whether a transaction was sent and its on-chain result, but they cannot establish that the original website was authentic. If the route, domain or wallet prompt does not match, reject the request and reopen the service from a verified address.

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