Protect your wallet
How to spot fake Arbitrum sites
Arbitrum is a popular L2 network, which makes it a frequent target for phishing. The only official domain is arbitrum.io. Everything else claiming to be Arbitrum should be treated as suspicious.
Common fake Arbitrum tricks
Look-alike letters
Domains that swap letters for similar characters, so arbitrum.io becomes something that looks identical at a glance.
Brand in a sub-part
Putting “arbitrum” in a subdomain or path of a domain the brand doesn't own, e.g. arbitrum.claim-xyz.top.
Bait pages
“Claim your Arbitrum airdrop”, “restore Arbitrum wallet”, “verify Arbitrum account” — urgency to make you connect fast.
Checklist before you connect
- Confirm the domain is exactly arbitrum.io — character by character.
- Check for a padlock and no “xn--” prefix in the address bar.
- Never sign a request you don't understand — especially unlimited approvals.
- Use a security extension that flags fake Arbitrum domains automatically.
Trust Line catches fake Arbitrum sites for you
Trust Line compares every domain you visit against Arbitrum's real address using on-device heuristics, and blocks impersonators before they load.
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