Keeping on-chain phishing from spilling into your exchange logins

People who are active in decentralised finance are frequent targets for phishing: fake airdrop pages, malicious signature requests, compromised extensions and impersonation in community channels. Those attacks usually aim at wallets, but the same person often holds exchange accounts too, and habits that are loose on-chain tend to be loose elsewhere. Good account hygiene keeps a compromise in one place from spreading to another. This guide sets out practical habits for Binance, OKX, Bybit or Bitget users who are also active on-chain.

Separate emails and passwords

Use a dedicated email address for exchange accounts that you do not use to sign up for DeFi tools, newsletters or community platforms. Give it a unique password and two-step verification. Use unique passwords for each exchange stored in a password manager. If a community platform or tool you signed up for is breached, your exchange email will not be on the leaked list.

Prefer phishing-resistant sign-in

Use passkeys where available, or an authenticator app, rather than text messages. Passkeys only work with the genuine site or app, so a fake login page reached from a convincing link cannot use them. Register a backup method on a second device. Treat any page that asks for your exchange password after you clicked a link in a community channel as suspicious.

Limit what an intruder could do

Turn on the withdrawal allowlist so funds can only go to addresses you have approved. Give API keys the minimum permissions and no withdrawal rights. Review active sessions and recognised devices monthly and remove anything unfamiliar. These settings mean that even if a password leaks, the attacker's options are narrow.

Keep community contact at arm's length

In community channels, assume that anyone who messages you privately offering help, early access or support is not who they claim. Never share codes, passwords or recovery phrases, and never install software they suggest. If you need help with an exchange account, use official support through the app, not a moderator or helper in a chat.

Risk boundary: DeFi Protocols Hub

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Scenario checkpoint

• Use a dedicated email address only for exchange accounts
• Set unique passwords for each exchange in a password manager
• Prefer passkeys or an authenticator app over text messages
• Turn on the withdrawal allowlist and keep API keys without withdrawal rights
• Treat private offers of help in community channels as suspicious