Crypto scams: common types and warning signs

What crypto scams are and why they work

Crypto scams involve schemes designed to take your funds or account access using cryptocurrencies such as bitcoin. Once you send crypto, that transaction appears on a blockchain (a public, shared list of records). The transfer rarely can be reversed, which is why it's favored by criminals.

You're more at risk when someone tries to rush you, promises a huge return or pretends to be someone you know. And crypto prices swing wildly, so even a real investment can lose value in minutes. Losses don’t always mean there’s been a scam, but scams always mean you’re likely to lose money.

The main types of crypto scam

Fake giveaways: a message or post tells you a celebrity or company will double the crypto you send them. Any genuine business or person will never send back more than you transfer.
Rug pulls: this is when the makers of a new coin attract buyers, then vanish and keep the money.
Impersonation and fake support: someone pretends to be staff at an exchange and demands confidential info, like your seed phrase.
Wallet drainers: a dangerous site or app asks you to connect your crypto wallet or sign something, then empties everything from your wallet.

There's also a longer, more elaborate version that mixes fake romance with a bogus trading app. This is the pig butchering scam.

Red flags to check before you deposit or buy

Guarantees of profits or unusually high returns.
Someone pushes you to act quickly or says this is a limited-time offer.
Anyone asking for your seed phrase (those recovery words for your wallet), any private key or any password. Don’t share these at all.
Your withdrawal is blocked unless you pay some "fee" or "tax".
The platform isn’t registered with your country’s financial regulator.

Always enter the platform’s address yourself, check their registration on the official pages, and look up coins or tokens you haven’t seen before somewhere reliable. Don’t accept a professional website as proof it’s safe. See our guide on how fake crypto exchanges trick users for more detail.

Frequently asked questions

How can I tell if a crypto giveaway is a scam?

It’s a scam if you’re told to send crypto to receive more in return. Authentic companies don’t multiply what you send, and real promos are only shared on official and verified profiles. Check the website URL and social media handle with care. Scammers copy real names and logos.

What should I do if I already sent crypto to a scammer?

You need to act quickly. Immediately contact the service used for the transfer, notify your local police, and report to your country’s main fraud authority. Hold onto all evidence, like screenshots or confirmations. Watch out for offers to get your funds back for a fee, as recovery scams are common next. Crypto moves can’t usually be reversed, so letting authorities know fast is important.