Common Scams & How to Spot Them

The cons are as old as money — guaranteed returns, urgency, secrecy — just wearing a blockchain costume with the undo button removed.

Crypto & Tokenization · Lesson 21 · 9 min read

Someone DMs you: a “guaranteed 5% a day” crypto fund, a friendly stranger who’s quietly made millions, a link to “claim your free airdrop.” It all looks exciting and professional. Some crypto projects are real, and some are traps built to take everything you have — and the traps are good. How do you tell them apart before it’s your money? Hold the question; a small set of red flags catches almost all of them.

Scams vs failures — and the common patterns

Last lesson was things breaking; this is deliberate deception. The recurring patterns:

• Rug pull — creators hype a token, attract money, then drain the liquidity or abscond, crashing it to near zero.
• Ponzi / “guaranteed high returns” — pays early investors with later investors’ money; collapses when inflows stop.
• Pump-and-dump — insiders inflate a thin token with hype, then sell into the crowd’s buying.
• Phishing / wallet-drainers — fake sites, malicious approvals, seed-phrase theft (lesson 17).
• Impersonation / fake rewards — posing as a known project or person: “claim your airdrop, connect your wallet.”

Different costumes, one goal: get your money or your keys.

The red flags that unite them

You rarely need to name the exact scam — you need the shared tells:

• Guaranteed or too-good-to-be-true returns.
• Urgency and FOMO — “act now or miss out.”
• Pressure to keep it secret, or to recruit friends.
• Any request for your seed phrase or a broad token approval.
• An anonymous team with no verifiable track record; unaudited or closed code holding funds.
• “Send X, get 2X back.”

Above all: claims that contradict how crypto actually works. You now know the mechanics — so when someone promises what the mechanics can’t deliver, that is the flag.

Dissecting a “guaranteed 5% a day” pitch:
• 5%/day is over 1000× a year — no real investment sustains that. (Too-good returns.)
• Where would the yield come from? Real yield is lending, fees, or staking — none pay that. (Contradicts the mechanics.)
• It urges you to deposit now and recruit friends. (Urgency + recruitment → paying old investors with new money.)
• The team is anonymous and the code is closed; “withdraw anytime” works at first, then breaks.
• You didn’t need to name it “Ponzi” — four red flags were enough to walk away.

Your defense: slow down and verify yourself

Almost every scam needs you to act fast and trust someone’s word — the exact opposite of everything this track taught. So the defense is the track’s whole ethos: slow down, treat unsolicited DMs and offers as hostile by default, verify independently (read the contract, check the team, look it up on a block explorer — lesson 5), never share your seed or grant blind approvals, and remember that no legitimate opportunity requires secrecy and speed.

Real returns are never guaranteed; “guaranteed” plus “hurry” is the signature of a trap. The verify-don’t-trust habit you’ve built is your scam shield.

A “free airdrop — connect your wallet to claim” message, walked through:
1. The offer is unsolicited and urgent (“claim before it’s gone”). Flag one.
2. It wants you to connect your wallet and “approve” to claim — a request for a broad token approval. Flag two.
3. Mechanics check: a genuine airdrop doesn’t need you to approve spending of your tokens to receive something. The request contradicts how receiving works. Flag three.
4. You verify independently: the “project” account is an impersonation with no real track record. Flag four.
5. Verdict: a wallet-drainer. You don’t connect, don’t approve, and move on — prevention, because there’s no undo if you’re wrong.