How to spot a crypto scam: 8 warning signs

1. Guaranteed returns

Promises like "2% a day", "double your money in 30 days" or "no risk at all" are the oldest hook there is. Prices of crypto-assets swing in both directions, so no honest platform can promise a fixed, high return every single day. Where such payouts do appear for a while, they are usually paid with money from newer participants, which is how a Ponzi scheme works, until the new money stops coming in.

2. They contact you first

A typical pattern: you ask for help in a public forum or group, and within minutes someone from "customer support" slides into your private messages. Genuine support teams work the other way round: you reach out to them, through the official app or website. Treat unexpected messages, emails and phone calls about crypto with the same suspicion. A stranger offering an opportunity out of the blue is far more likely to be a scammer than a stroke of luck.

3. Pressure and urgency

Countdown timers, "last places available" and warnings that your account will be blocked within the hour all serve one purpose: to stop you from thinking things through. Scams depend on quick decisions, because a little time to check usually exposes them. A legitimate offer will still exist next week. When you feel rushed, treat that feeling itself as a warning, and take the time to verify the offer through a channel you found yourself.

4. They ask for your seed phrase, or a signature

Your seed phrase (the 12 or 24 recovery words of your wallet) gives full control over everything in it. No exchange, wallet maker or support agent has any reason to ask for it, ever. Anyone who does is trying to empty your wallet.

A more recent variant skips the seed phrase altogether. A website asks you to "connect your wallet" and "approve" a request, and that approval quietly gives a smart contract permission to move your tokens. Only approve requests you fully understand, on sites you reached yourself.

5. A new friend with an investment tip

Some scams take months. A message to the "wrong number" or a match on a dating app turns into a friendly, daily conversation, without any mention of money. Only after trust has been built does the new contact mention a trading platform that has made them rich, and offer to help you sign up. US authorities, including the Treasury's FinCEN, call this "pig butchering". The platform is controlled by the scammers, and the relationship was never real.

6. Giveaways that double your crypto

Fake livestreams on YouTube and other platforms show a well-known entrepreneur promising to send back double whatever you send to an address on screen. The video is often an old recording or an AI deepfake, the voice can be cloned, and the comment section is filled with fake success stories. Real people and companies do not hand out free crypto in exchange for yours, and blockchain transactions cannot be reversed.

7. You can't withdraw

On a fake platform, your account balance looks fantastic: steady gains, sometimes 20% or 50% in weeks. The trouble starts when you ask for a withdrawal. Suddenly there is a "tax" to settle, a "release fee" or a "security deposit" to pay first. The balance was only ever a number in a database run by the scammers, and every extra payment you make simply disappears with the rest.

8. Look-alike addresses and links

Scammers copy the details people tend to glance at. Websites differ from the real one by a single character, fake apps imitate well-known wallets, and in "address poisoning" a scammer sends you a tiny transaction from an address whose first and last characters match one you use, hoping you will copy it from your history later. Use bookmarks for important sites, download apps only via the official links, and compare every character of an address before you send.