Crypto Security Best Practices

The mindset: you are your own bank

The single most important idea in crypto security is this: when you hold your own crypto, you are the bank. There is no fraud department to call, no manager who can reverse a payment, and no insurance that refunds a bad transfer. The same design that lets you move money without anyone's permission also means nobody can step in to undo a mistake.

That isn't a reason to be afraid — it's a reason to build good habits. Banks employ entire security teams; you can get most of the way there with a handful of disciplined routines. Once you accept that the responsibility sits with you, the rest of this guide is simply how to carry that responsibility well.

Protect your accounts

Most people's first brush with crypto is an exchange or app account, and that's where a lot of theft begins. Lock these down first:

• Use a unique, strong password for every crypto account. Reusing a password means one leaked site can compromise your funds.
• Use a password manager. It generates long random passwords and remembers them so you never have to. This single habit removes the most common cause of account takeovers.
• Turn on app-based two-factor authentication (2FA), using an authenticator app or a hardware security key — not SMS. Text-message codes can be intercepted by SIM-swapping, where an attacker takes over your phone number.
• Secure your email, because it's the master key to password resets. Give it its own strong password and its own 2FA.

Protect your seed phrase

When you use a self-custody wallet you receive a seed phrase (also called a recovery phrase) — usually 12 or 24 words. Those words are your money. Anyone who reads them can rebuild your wallet and drain it, and if you lose them you lose access forever. If wallets are new to you, start with the wallets guide before moving funds.

Write the phrase down on paper or stamp it into metal, and store it offline somewhere only you can reach. Never photograph it, type it into a website, paste it into a chat, or save it in cloud notes. A seed phrase that has ever touched an internet-connected text box should be considered compromised.

Recognize common scams

Most losses don't come from broken cryptography — they come from people being tricked. Learn the patterns and you'll spot them in seconds:

• Phishing sites: fake copies of real exchanges or wallets, often promoted through ads or look-alike URLs, built to capture your login or seed phrase.
• Fake support: impostors posing as help desks in chats, comments or pop-ups. Real support never DMs you first and never asks for your keys.
• Giveaway and "double your crypto" scams: promises that if you send coins to an address you'll get more back. You never will — it's a one-way trip.
• Romance and "pig-butchering" scams: a long, friendly relationship that slowly steers you into a fake investment platform showing fake profits.
• Fake apps: malicious wallet or exchange apps in stores or sideloaded from links, designed to grab your credentials and keys.

The common thread: urgency, secrecy, and a too-good-to-be-true return. When you feel rushed, slow down — that pressure is the scam.

Safe transacting

Because crypto transfers are usually final, a few seconds of caution before you hit send prevents irreversible mistakes:

• Verify the address carefully, checking the first and last several characters — not just a glance.
• Send a small test amount first for any new or large transfer, confirm it arrives, then send the rest.
• Beware address-poisoning: attackers seed your history with look-alike addresses hoping you'll copy the wrong one. Always copy from a trusted source, never from past transaction history.
• Check the network matches on both ends. Sending on the wrong chain or network can lose the funds permanently.

Device & network hygiene

Your security is only as strong as the device you trust. Keep that foundation clean:

• Keep software updated — your operating system, browser, wallet and apps. Updates patch the holes attackers rely on.
• Install from official sources only. Get apps from official stores and wallets from the developer's verified site, never from links in messages.
• Avoid public Wi-Fi for transactions. Use a trusted network, or your mobile connection, when accessing accounts or moving funds.
• Bookmark the real sites you use and open them from your bookmarks, so you never fall for a look-alike URL in a search ad or email.

Consider a hardware wallet for larger holdings

As your balances grow, the smartest upgrade is moving long-term holdings into cold storage. A hardware wallet keeps your private keys on a dedicated offline device, so even a malware-infected computer can't sign transactions without your physical confirmation.

A quick security checklist

You can act on all of these today. Work through them in order:

1. Install a password manager and give every crypto account a unique, strong password.
2. Switch every account from SMS codes to app-based 2FA or a hardware security key.
3. Secure the email tied to your accounts with its own strong password and 2FA.
4. Write your seed phrase on paper or metal, store it offline, and delete any digital copies.
5. Bookmark the real exchange and wallet sites you use, and only open them from bookmarks.
6. Update your operating system, browser and wallet apps, and remove anything you don't recognize.
7. Practice a small test transfer so verifying addresses becomes second nature.
8. Move long-term holdings to a hardware wallet once your balance is worth protecting.

Frequently asked questions