As prediction markets have gone mainstream, they have attracted scammers as well as legitimate operators. The regulated platforms are safe to use, but around them sits a fringe of fake sites, impersonators and “guaranteed profit” schemes designed to separate traders from their money. Knowing the common patterns is the best defence. None of the tactics below is unique to prediction markets, but each shows up in this space.
Fake platforms and clones
The most direct scam is a website that impersonates a real platform — a near-identical clone of Kalshi or Polymarket at a slightly different address, or an invented “exchange” promising huge returns. You deposit, see fake gains, and then cannot withdraw. Protect yourself by always reaching a platform through its official domain (type it yourself or use a bookmark, never a link from an ad, DM or email), checking that a US platform is genuinely CFTC-regulated, and being deeply sceptical of any venue you have never heard of that is heavily promoted on social media. Our platform reviews only cover legitimate, verifiable operators.
Phishing and impersonation
Phishing messages mimic a real platform’s emails or texts, warning of a “security problem” and linking to a fake login page that harvests your credentials. Impersonators also pose as support staff on social media, offering to “help” if you share your password or a verification code. No legitimate platform will ever ask for your password, two-factor code or wallet recovery phrase. Treat any unsolicited message with suspicion, never log in through a link, and enable two-factor authentication so a stolen password alone is not enough. More on this in our privacy and security guide.
Tipsters and “guaranteed” signals
A whole cottage industry sells “guaranteed winning” picks, paid signal groups, or bots that promise to trade profitably on your behalf. The mathematics is unforgiving: nobody can guarantee outcomes in a market, and anyone who genuinely could would not be selling a subscription. These schemes rely on survivorship (showing you only the winners) and often end in a request for an up-front fee or access to your account. Treat any promise of guaranteed profit as a red flag by definition, and size your own trades with tools like our EV calculator rather than someone else’s tips.
Crypto-specific scams
On crypto-based platforms, extra dangers apply. “Wallet drainer” sites ask you to connect a wallet and approve a transaction that quietly grants access to your funds; fake token or airdrop promotions lure you into signing malicious contracts. Only ever connect your wallet to the genuine platform, read what you are approving, and keep the bulk of your funds in a separate wallet. Never share your seed phrase with anyone, for any reason — doing so hands over everything.
How to protect yourself
- Use official domains only — bookmark them; never trust links from ads, DMs or unexpected emails.
- Stick to regulated platforms — verify CFTC regulation for US venues; see whether a platform is safe before funding it.
- Never share secrets — no password, 2FA code or wallet phrase, ever, to anyone.
- Distrust guarantees — guaranteed profit, insider picks and “risk-free” systems are scams.
- Ignore fake promo codes — get offers from the platform itself, not third-party “code” sites.
- Enable two-factor authentication and use a unique, strong password.
A legitimate platform will never pressure you to act immediately, pay a fee to withdraw, or share a security code. When in doubt, close the tab and reach the platform through its official site. Trade responsibly — see responsible trading.
Frequently asked questions
How can I tell if a prediction market platform is a scam?
Warning signs include a platform you reach through an ad or DM rather than its official domain, promises of guaranteed or outsized returns, pressure to deposit quickly, a fee demanded before you can withdraw, and requests for your password or wallet phrase. Stick to verifiable, regulated platforms.
Will a real platform ever ask for my password or wallet phrase?
Never. No legitimate platform or support agent will ask for your account password, two-factor code or wallet recovery phrase. Anyone who does is trying to steal your funds.
Are paid tipster or signal groups worth it?
No. Nobody can guarantee market outcomes, and those who claim to are relying on showing you only their wins. Treat any promise of guaranteed profit as a scam and make your own sized decisions instead.