How to spot an investment or crypto scam

Investment scams are the most expensive kind of fraud most people will ever encounter. Where a fake-shop scam costs you the price of an order, a fake trading platform is built to drain your savings - patiently, over weeks, while showing you a dashboard that says you're getting richer.

The platform is the trap. This guide covers how these scams work and, most importantly, how to check an investment site before you put money into it. If you've already deposited and can't withdraw, skip to if you think you're already in one.

How investment and crypto scams work

The mechanics are consistent across crypto, forex, and "stock" versions:

1. First contact feels harmless. A message on WhatsApp or a dating app, a comment under a finance video, an ad with a celebrity's face, or a "wrong number" text that turns into a friendly chat. No pitch yet - just a connection.
2. A trusted-sounding opportunity appears. Eventually they mention an investment that's doing well for them - a crypto platform, a trading app, a "managed" account. They're not desperate; they're generous, offering to show you.
3. The platform looks completely real. Slick dashboard, live-looking charts, a working app, responsive "support". You make a small deposit and watch your balance climb. You can even withdraw a small amount early - which is what convinces you it's real.
4. You're encouraged to put in more. The returns are steady and impressive, so you invest more - sometimes a lot more, sometimes borrowed.
5. Withdrawal becomes impossible. When you try to take real money out, there's a "tax", a "fee", or a "verification deposit" required first. Pay it and there's another. Eventually the account is frozen, the contact vanishes, and the platform stops responding. The balance you watched grow was never real.

This long-game version - building trust before introducing the investment - is often called "pig butchering". The numbers on the screen are fiction. The money you deposit is gone the moment it lands.

The warning signs

No single sign is proof, but these cluster around scams:

• Guaranteed or steady high returns. Real investments fluctuate and carry risk. "2% a day", "guaranteed profit", or a chart that only ever goes up is a fabrication.
• The opportunity came from a stranger or an ad. Contact that started on a dating app, social media, WhatsApp, or a "wrong number" text - then turned to investing - is the classic pattern.
• Pressure and urgency. A closing window, a limited allocation, a "now or you'll miss it". Real opportunities don't need you to rush.
• You can't withdraw without paying first. Fees, taxes, or deposits demanded before you can take money out are the defining tell. Legitimate platforms deduct fees from your balance; they don't ask you to send more money to release your own.
• Payment in crypto, gift cards, or to a personal account. Hard to trace and impossible to reverse - exactly why scammers prefer them.
• A celebrity endorsement. Faked endorsements from well-known names are a staple of investment-scam ads. The celebrity has no idea.
• A brand-new or unfamiliar platform. Most fake trading sites are registered shortly before the campaign that promotes them.

How to check a platform before you deposit

Before any money moves, do these:

• Check the regulator. In the UK, search the FCA Register and the FCA Warning List. In the US, check the SEC and FINRA. A firm that takes investments and isn't registered with the relevant regulator is one to walk away from.
• Check the domain age and history. A "well-established" platform on a domain registered a few weeks ago is lying about one of those things. SniffTest shows domain age as part of its checks.
• Search the name with "scam" and "review". Try the platform name on Google and site:reddit.com [platform name]. Victims and warnings surface fast.
• Be sceptical of the app. A polished app in the store isn't proof - scam platforms ship apps too, and some are distributed outside the official stores specifically to dodge review.
• Never pay to withdraw. If you're ever asked to send money to release your own funds, it's a scam, full stop. No more deposits.

How SniffTest helps

Fake investment platforms lean hard on looking legitimate - a real-looking domain, a professional site, often a name close to a genuine firm's. SniffTest is built to see through exactly that.

Paste the platform's web address into SniffTest and it checks the domain against known scam blocklists and Google Safe Browsing, flags how recently it was registered, and detects when the name is a lookalike of an established brand or regulated firm. For borderline sites it runs a deeper scan - opening the actual page in a real browser and reading the rendered result - to catch platforms that present differently to a casual visitor than to a scanner. You get a plain-English verdict from 17 checks in seconds, before any money is at stake.

It can't read a regulator's register for you - always do that too - but it will catch a freshly registered, brand-impersonating, blocklisted domain in the time it takes to paste a link.

Check an investment site on SniffTest →

If you think you're already in one

Stop depositing immediately - including any "fee" or "tax" you've been told will release your funds. That money is also lost, and paying it only confirms you as a target.

Then:

1. Contact your bank straight away. If you paid by card or transfer, they may be able to act - speed matters.
2. If you sent crypto, contact the exchange you bought it through; in rare cases funds can be frozen if you move fast.
3. Gather everything - messages, the platform's address, transaction records, names used.
4. Report it. In the UK, Action Fraud at actionfraud.police.uk and the FCA. In the US, the FTC at reportfraud.ftc.gov and the FBI's IC3.
5. Be wary of "recovery" services that contact you afterwards promising to get your money back for a fee - these target scam victims a second time.

Being scammed is not a failure of intelligence - these operations are professional, well-funded, and designed to defeat careful people. Reporting helps, even when recovery doesn't.

Frequently asked questions

Q: What is a "pig butchering" scam?

A: It's an investment scam that starts by building a relationship - often via a dating app, social media, or a "wrong number" text - before introducing a fake crypto or trading platform. The scammer earns your trust over weeks, encourages growing deposits shown as rising profits, then makes withdrawal impossible. The friendly term hides a deliberate, drawn-out fraud.

Q: Why could I withdraw a small amount at first?

A: That early withdrawal is bait. Letting you take out a small sum convinces you the platform is real and the profits are genuine, so you deposit far more. Once the larger sums are in, withdrawals stop and "fees" appear.

Q: I've been asked to pay a tax or fee to withdraw my profits. Is that normal?

A: No. Legitimate platforms deduct fees from your balance - they never ask you to send additional money to release your own funds. A demand to pay before you can withdraw is the clearest sign the platform is a scam. Do not pay it.

Q: How do I check if an investment platform is legitimate?

A: Check the regulator's register (the FCA in the UK, the SEC and FINRA in the US), look up the platform name with "scam" and "review", and check the domain's age. Paste the web address into SniffTest to flag a recently registered, blocklisted, or brand-impersonating domain as part of its 17 checks - then still confirm the firm is regulated before depositing anything.

These scams often begin with a link or a too-good ad. See how to spot a fake shop from a social media ad for the ad-led version, and how to check if a website is legit for the full site-vetting checklist.