THE BASICS/SECURITY & PROTECTION
Security & protection
Scammers never stop innovating to get their hands on your hard-earned crypto.
Whether you’re a beginner or an experienced holder, I strongly recommend reading this page in full and sharing it around you. Crypto scams don’t only target newcomers — even the most careful people can get caught out.
Here you’ll find plenty of concrete examples to understand scammers’ techniques and learn how to protect yourself effectively. Every detail matters, and knowing these methods can make all the difference.
$12.4 billion
in revenue collected by crypto scams worldwide in 2024.
$9.3 billion
in crypto-asset fraud losses reported to the FBI in 2024, up 66% in a year.
$2.8 billion
lost by over-60s in the United States alone.
Sources: Chainalysis, Crypto Crime Report 2025 · FBI, Internet Crime Report 2024.
· CONTENTS ·
№ 01
Phishing
Phishing is the most common crypto scam. Scammers send emails, DMs or social media messages posing as legitimate crypto companies or projects.
· THEIR METHOD ·
- The trap: a link takes you to a fake site identical to the original, where you’re asked to enter your private keys or sign a transaction. The result? Your wallet is emptied within minutes.
- Their technique: playing on urgency (fake withdrawals, security alerts) to make you act fast. Some malicious links even appear on official sites and accounts.
· HOW TO PROTECT YOURSELF ·
- Never click a link received by email or DM.
- Check the site’s URL before entering any information.
- Enable 2FA on your accounts.
№ 03
Fake websites
Scammers create perfect copies of legitimate sites to steal your credentials and empty your wallets.
· THEIR METHOD ·
- Their method: a slightly altered URL (e.g. Binance-crypto or Biinance instead of Binance), but a visually identical site. You enter your credentials or private keys, and within minutes your funds are gone.
- Example: a fake site mimicking Blockworks where only one detail (like a banner) linked to a fraudulent page.
· HOW TO PROTECT YOURSELF ·
- Always check the URL before logging in.
- Never enter your private keys on a website.
- Use bookmarks to access official platforms.
- Enable 2FA to limit unauthorised access.
№ 04
Fake profiles & impersonation
Scammers create fake X, Telegram or Discord accounts posing as well-known influencers, journalists or crypto figures to deceive their audience.
· THEIR METHOD ·
- Copying the name, profile picture and bio of an influential account.
- Privately contacting followers to offer fake giveaways, airdrops or investment opportunities.
- Sometimes they buy verified accounts to appear more credible.
- Why it’s dangerous: even in a small community, fake accounts regularly appear to trap members. At scale, the damage is enormous.
· HOW TO PROTECT YOURSELF ·
- Always verify an account’s authenticity before interacting.
- Never send money or share your private keys, even if the message comes from an “official account”.
- Be wary of offers that seem too good to be true.
№ 05
Malicious NFTs and tokens
Received unknown NFTs or tokens in your wallet that you never claimed? That’s a scam.
· THEIR METHOD ·
- You receive a mysterious NFT or token that looks like an airdrop or a reward.
- Curious, you click on it or try to sell it.
- You sign a malicious transaction that gives hackers access to your wallet. The result? Funds drained instantly.
· HOW TO PROTECT YOURSELF ·
- Never interact with an NFT or token received without reason.
- Never connect your wallet to an unknown site claiming to “unlock” your rewards.
- Disable automatic NFT display on Metamask and other wallets.
- Use a second wallet dedicated to airdrops, separate from your main portfolio.
№ 06
SIM swapping
One of the most sophisticated social engineering scams: hackers take control of your phone number to bypass 2FA and access your crypto wallets.
· THEIR METHOD ·
- They impersonate you with your phone carrier to request a new SIM card.
- Sometimes they infiltrate databases by posing as an IT technician.
- They send hundreds of texts to the victim to bury the security alerts sent by crypto services.
- Notable example: in 2016, the US Department of Justice recovered $5.2 million in Bitcoin stolen via SIM swapping.
- Notable example: “Baby Al Capone”, a teenager, stole $23.8 million in crypto using this technique.
· HOW TO PROTECT YOURSELF ·
- Disable SMS-based 2FA and prefer an app like Google Authenticator or a hardware key (Yubikey).
- Set a PIN code on your SIM card to prevent it from being transferred.
- Avoid linking your phone number to sensitive platforms (exchanges, wallets).
- Be wary of “technical support” calls asking for personal information.
№ 07
Fake trading bot scams
Scammers exploit the appeal of easy money by touting ultra-high-performing trading bots promising spectacular returns.
· THEIR METHOD ·
- They post fake testimonials and results on social media.
- You’re invited to deposit crypto on an “automated” platform.
- Once the funds are sent, there’s no getting them back: the bot doesn’t exist, and the scammers disappear.
· HOW TO PROTECT YOURSELF ·
- Be wary of returns that seem too good to be true. No bot guarantees consistent profits.
- Never deposit funds on an unknown platform without thorough checks.
- Check independent reviews and look for verifiable proof of performance.
- Don’t trust social media testimonials, which are often faked.
№ 08
Romance scams and “pig butchering”
Scammers exploit emotions to trap their victims, often through dating sites or social media.
· THEIR METHOD ·
- Their method: they build a relationship over several weeks or months, earn your trust, then introduce crypto by boasting about their “gains”.
- The trap: you send a small amount, receive a fake return on investment, and, feeling confident, invest more. But when it’s time to withdraw, you can’t. The scammer disappears with all your money.
· HOW TO PROTECT YOURSELF ·
- Be wary of strangers online who talk about investing.
- Never send money to someone you met on the internet.
- Always check platforms before depositing funds there.
№ 09
Exit scam
The exit scam is a classic crypto scam: a project raises funds, then the team suddenly disappears with investors’ money.
· THEIR METHOD ·
- Their method: they launch a promising project, attract capital, and once enough has been raised, everything disappears (website, social media, developers).
- Notable example: the Kokomo project scammed $4 million before shutting down all its channels.
· HOW TO PROTECT YOURSELF ·
- Be wary of anonymous projects with no verifiable track record.
- Check whether the team is public and their identity confirmed.
- Favour audited, well-established projects.
- Never invest more than you can afford to lose.
№ 10
Fake sites & apps
Scammers perfectly imitate crypto sites and apps to steal your credentials and empty your wallets.
· THEIR METHOD ·
- Fake websites with a slightly altered URL (Binance-crypto instead of Binance). You enter your credentials and your funds vanish.
- Fake apps on Google Play, the App Store or ads on X and Google, imitating well-known wallets or exchanges.
- Fraudulent updates: during an official update announcement, scammers distribute an infected version, and many fall for it.
- Notable example: a fake Ledger Live app appeared on the Microsoft Store, leading to the theft of 16.8 BTC (about $600,000).
· HOW TO PROTECT YOURSELF ·
- Always download apps via the project’s official website.
- Check the URL before logging in.
- Never enter your private keys into an app or a website.
- Enable 2FA to secure your access.
№ 11
Malware & ransomware
Malware and ransomware infect your devices to steal your data, hijack your funds or mine crypto without your knowledge.
· THEIR METHOD ·
- Spying: they monitor your screen and keyboard, watching for keywords like Bitcoin or wallet.
- Address hijacking: when you copy a crypto address, the malware replaces it with the scammer’s.
- Hidden mining: software installs on your PC and uses your computing power to mine crypto.
- Ransom: the ransomware encrypts your files and demands a ransom in crypto to unlock them.
- Notable example: in 2017, the WannaCry malware (Cryptolocker) hit the entire world, encrypting thousands of computers’ data in exchange for a Bitcoin ransom.
· HOW TO PROTECT YOURSELF ·
- Never download suspicious software or files.
- Avoid dubious sites and torrents.
- Keep your antivirus up to date and your firewall enabled.
- Always double-check the address before sending funds.
№ 12
Giveaway scams
“Double your Bitcoin!” You’ve probably already seen this scam on X or YouTube.
· THEIR METHOD ·
- A fake giveaway claims to offer you 2 BTC if you send 1.
- Influential accounts, often hacked, promote the scam.
- Once your crypto is sent, it’s gone.
- Notable example: Vitalik Buterin’s X account was hacked, spreading a scam that stole $691,000.
- Notable example: Graham Ivan Clark, behind one of the biggest “Double your Bitcoin” scams, manipulated thousands of victims.
· HOW TO PROTECT YOURSELF ·
- No serious project will ever ask you to send crypto to receive more.
- Verify sources before following a giveaway link.
- Never trust offers that seem too good to be true.
№ 13
Blackmail & extortion
Scammers use fear and shame to force you to send crypto under the threat of a compromising revelation.
· THEIR METHOD ·
- You receive an alarming email claiming the scammer holds a record of your visits to adult websites.
- They threaten to reveal everything to your loved ones unless you pay a ransom in crypto.
- It’s all fake, but some, gripped by panic, pay to avoid an imaginary scandal.
- Notable example: the “Crypto-Porno” case, where two French hackers extorted over a million euros in Bitcoin, trapping 1,300 victims.
· HOW TO PROTECT YOURSELF ·
- Never reply to these emails. They send mass threats hoping someone takes the bait.
- Check whether your email address has been leaked (via Have I Been Pwned).
- Never pay the ransom. Giving in only encourages them to continue.
- Mark the email as spam and report it.