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Be wary if an online contact or social-media promoter promises unusually high returns, pressures you to move money to a particular crypto platform or token, or asks for another payment before you can withdraw. Pause, verify the person and opportunity through channels you find independently, and do not send more money if anything seems suspicious. A convincing dashboard, friendly relationship, or small early withdrawal is not proof that an investment is real.
This guide draws on U.S. federal consumer, securities, commodities and law-enforcement guidance. It is about recognizing and responding to suspected fraud, not evaluating whether a particular asset is a suitable investment. “DeFi” describes a broad category of projects and services; promotion of a DeFi project alone does not establish that it is fraudulent, but the same warning signs around hype, false claims and pressure apply.
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How crypto investment and DeFi scams typically unfold
Many schemes follow a sequence: attract a target, build confidence, present an investment opportunity, encourage larger transfers, then block or complicate withdrawals. The details vary, but a displayed balance is not the same as money you can actually retrieve.
Relationship-building followed by an investment pitch
Contact may begin with an unsolicited social-media message, text, dating-app conversation or supposedly accidental message. The new contact may build a friendship or romantic connection, claim special trading knowledge, and eventually introduce an investment. They may push the conversation to a private messaging app and direct you to a convincing-looking website or app. A personal connection does not verify an investment.
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Fake platforms and fabricated account growth
A fraudulent site or app may show rapid gains that do not reflect funds held in a genuine account. Some operators permit a small withdrawal to make the platform seem trustworthy, then urge the person to deposit much larger amounts. That early withdrawal is not proof that the platform or its displayed balance is legitimate.
Token hype, pump-and-dump schemes and Ponzi-style returns
A promoter or group may generate excitement around a token or project, encouraging people to buy while demand rises. In a pump-and-dump, promoters sell their own holdings after the price has been pushed up, leaving later buyers exposed to a sharp decline. In a Ponzi-style scheme, money from newer participants may be used to create the appearance of returns to earlier participants. Claims of profit do not, by themselves, show that an underlying business or investment is generating it.
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Invented withdrawal charges
When someone tries to withdraw, the operator may claim that a tax, fee, insurance payment or account-release charge must be paid first. Federal agencies describe these extra-payment demands as a recurring fraud tactic. Do not pay a new charge to access a balance shown by a platform you suspect is fraudulent.
How the warning signs differ by scheme
| Pattern | How it may begin | How the false opportunity is presented | What to watch for next |
|---|---|---|---|
| Relationship-based investment fraud | An unsolicited message or online friendship, sometimes with a romantic angle | A contact claims trading expertise or introduces a private platform | Pressure to move chats, deposit more, or pay to release a displayed balance |
| Fake investment platform | A recommendation, message or link to a site or app | A dashboard displays convincing account activity or rapid gains | A small withdrawal is followed by larger deposit requests or a fabricated withdrawal charge |
| Token pump-and-dump | Social-media posts, group chats or other promotion of an obscure asset | Hype encourages buying as promoters build demand | Promoters sell into that demand, potentially leaving later buyers with a rapid decline |
| Ponzi-style scheme | An investment pitch that emphasizes returns or a purported opportunity | Payments from new participants may create the appearance of returns to earlier ones | Claims of returns may not be supported by an underlying source of profit |
What warning signs should make you stop?
- Guaranteed or implausibly high returns. Promises of high profit with little or no risk are a major warning sign. The CFTC puts it plainly: “But, there is no such thing as a risk-free transaction or a guaranteed money-making opportunity.”
- An unsolicited pitch that turns personal. Be cautious when a new contact, romantic interest or supposed accidental texter shifts from conversation to investment advice, especially if they urge you to move to another messaging app.
- Urgency, secrecy or explanations you cannot check. Pressure to act quickly, keep the opportunity private, or accept a complicated explanation instead of independently understanding the asset and how the claimed profits are made is a reason to step back.
- A site, app or person you have not verified independently. The FBI warns about imitations of legitimate financial institutions, including misspelled web addresses, as well as suspicious investing apps. A polished appearance is not verification.
- Social-media excitement as the main evidence. Anonymous accounts, group chats, testimonials, screenshots or celebrity endorsements do not establish that a token or DeFi project is legitimate. Hype can precede promoters selling their holdings.
- A new payment demanded to withdraw. A purported tax, fee, insurance payment or release cost is not a reason to send more money to a suspicious platform.
How to check an opportunity before sending money
- Pause instead of following the pitch. Do not let a deadline, personal relationship or promise of special access substitute for checking the claims.
- Verify the person, company and asset separately. Search their names with terms such as “review,” “scam,” “fraud” or “complaint.” Do not treat a lack of negative search results as proof of legitimacy.
- Check the web address and app independently. Type an address you already know or locate the organization through a separate, trusted channel rather than using a link supplied by the promoter. Compare the exact domain carefully; imitations may use misspellings.
- Understand what is being offered and how returns supposedly arise. If the explanation is unclear, cannot be checked, or depends on guaranteed profits, do not transfer funds.
- For a securities offer, check the seller with the SEC’s Investor.gov tools. A registration check is one step, not a safety guarantee: registration alone does not prove an offer is safe, and fraud can still occur.
- Do not use superficial proof as a substitute for verification. Testimonials, screenshots, endorsements, a displayed balance or a small successful withdrawal can all be used to build confidence without proving that an investment is genuine.
What to do if you suspect a scam
- Stop communicating and send no more money. In particular, do not pay a purported tax, fee, insurance cost or account-release charge to unlock a balance on a suspicious platform.
- Preserve the information that could identify the people and transfers. Keep messages, usernames, phone numbers, email addresses, website addresses, transaction dates and amounts, wallet addresses, and the names of any receiving exchanges, platforms or financial institutions. Do not discard relevant records.
- Report the suspected fraud. Submit a report to the FBI’s Internet Crime Complaint Center (IC3) and the Federal Trade Commission (FTC). IC3 asks victims to include contact and transaction details where available.
- Contact the exchange or financial institution involved promptly. Provide the transaction and recipient information you preserved. A report does not guarantee that funds can be recovered, but the information can help the relevant organization assess what happened.
Watch for recovery scams after a loss
After an initial loss, another person may claim to be able to retrieve the crypto in exchange for an upfront fee, or ask for wallet credentials. That promise is not evidence of legitimacy; it can be another attempt to exploit someone who has already been targeted. Federal guidance notes that recovering crypto losses can be difficult. Do not pay a stranger in advance or disclose wallet credentials on the strength of a recovery claim.
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What the reported loss figures do—and do not—show
In a May 2021 consumer alert, the FTC said it had received nearly 7,000 reports of losses to bogus cryptocurrency investments since October 2020, totaling more than $80 million. The same alert reported $35 million in cryptocurrency losses among investment-scam losses reported by people in their 20s and 30s. These are historical figures from that alert, not current totals or an estimate of present-day losses.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Where ordinary scam checks stop
General fraud checks can help you question a promoter and avoid obvious pressure tactics, but they do not establish whether a DeFi protocol’s smart-contract code, wallet permissions, audit or transaction behavior is safe. The agency guidance covered here supports broad cautions about project promotion and token manipulation, not a technical method for approving a specific protocol. Do not mistake a registration lookup, a convincing dashboard or a polished project page for a technical security review.
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