Family Impersonation Scams: 'Hi Mum' & Grandparent Cons

The short answer

Family impersonation scams are the engine behind the most-reported fraud in the US. A scammer poses as your child, grandchild, parent, or close friend — by text ("Hi Mum, I lost my phone, this is my new number") or by a panicked phone call — and steers you toward sending money fast, before you can think. The lie is rarely sophisticated; the pressure is. The one defense that beats every version: never act on the message itself. Reach the real person back on a number you already have.

Most scams ask you to trust a stranger. This one is far more dangerous, because it asks you to trust someone you already love. The message, or the call, appears to come from your son, your daughter, your grandchild, your closest friend — and they are frightened, or stranded, or in trouble, and they need money now.

It is the most-reported fraud in the United States. In 2024 the Federal Trade Commission logged 845,806 imposter-scam reports — more than any other category — with $2.95 billion lost. A large and growing share of that does not impersonate a bank or a government office. It impersonates a family member. And it works on careful, intelligent people, because it does not attack your judgment. It attacks the instinct that sits underneath your judgment: the instinct to help your child without hesitating.

If you received one of these and your stomach dropped — if you sent money, or very nearly did — you were not careless. You were being a parent, or a grandparent, or a friend. That reaction is the target. This piece shows exactly how the scam is built, and the one simple habit that disarms every version of it. If you need it now, skip ahead to if you've already sent money.

Why this is the scam that works

Every scam has to do two things: seem real, and stop you from checking. Family impersonation does both better than almost anything else. It seems real because it wears the identity of someone whose voice and texting style you know — and, increasingly, it can wear them convincingly. It stops you from checking by making the situation an emergency: there is no time to verify, the scammer insists, because your child is in a cell, or at a hospital, or stranded, right now.

The cost lands hardest on older adults. The FTC found that people aged 60 and over lost $700 million to imposter scams in 2024 — more than five times the $122 million they lost in 2020. In that single year, 8,269 of them reported losing $10,000 or more. Some have emptied savings accounts and retirement funds in an afternoon, certain they were rescuing a grandchild.

The two ways it reaches you

Family impersonation arrives through two main channels. Recognising both is most of the defense.

1The text — the "Hi Mum" scam. A message lands from an unknown number: "Hi Mum, I dropped my phone down the toilet — this is my temporary number, save it." It is friendly, and not yet urgent. You reply. A short, warm exchange follows. Then comes the ask: a bill that must be paid today, a payment your "child" cannot make because their banking app is on the dead phone. Australia's consumer regulator, the ACCC, logged more than 11,000 reports of this exact scam in 2022 alone, and UK police have warned of the same playbook running on WhatsApp.

2The call — the grandparent scam. The phone rings. A young voice, crying or whispering, says "Grandma? It's me." They have been in a car accident, or arrested. Often a second person takes the phone — a "lawyer" or a "police officer" — and demands bail or a settlement immediately, in cash or gift cards. And the voice is no longer a guess: modern AI can clone a familiar voice from a short clip of audio pulled off social media.

How the scam plays out

Underneath the two channels, the structure barely changes:

1Contact from an unexpected place. A new number, an unknown caller, a different app. The scam needs this — your real family member's saved number would expose it instantly. The "I lost my phone" line exists purely to explain away the wrong number before you can question it.

2A fast bond. Before any money is mentioned, the scammer warms you up — a little chat, a "love you," enough familiarity to lower your guard. On a call, raw emotion does the same job in seconds.

3A crisis with a clock. An accident, an arrest, an overdue bill, a deadline today. The emergency is the engine of the whole con: it converts "let me check" into "there is no time to check."

4An untraceable ask. A wire transfer, a payment app, gift cards, cryptocurrency, or cash handed to a courier. Each is fast and nearly impossible to reverse — and a real family member would almost never genuinely need money to move that way.

5Pressure to keep it quiet. "Don't tell Dad, he'll be furious." "Please don't tell anyone." Secrecy isolates you from the one thing that breaks the scam — a second opinion from someone who is not panicking.

The rule that ends this scam in a single sentence: a message cannot prove who sent it. A text from a new number, a voice on a call — neither is proof of identity, no matter how familiar it feels. The only proof is reaching the real person through a channel you already trust. Until you have done that, you are not talking to your family. You are talking to a claim.

From the field. The cruelty of this scam is that it punishes love. The faster and more unconditionally you would help your family, the better it works on you — which means it hits the most devoted parents and grandparents hardest, not the most careless ones. I have sat with people who are not gullible in any other part of their lives, who wired thousands of dollars in twenty minutes, because the alternative — even for a few seconds — was picturing their grandchild alone in a jail cell. The scammers count on exactly that. The thing that protects you is not being smarter or more suspicious. It is having one fixed habit you follow before any money moves: you hang up, and you call back.

The red flags, in plain sight

Almost every version of this scam fails against the same short checklist. Any single item here is reason enough to stop:

—The contact is from a new or unknown number. A real family member is already saved in your phone. "I lost my phone, this is my new number" is the single most common opening line of the text version.

—There is an emergency, and a deadline. An accident, an arrest, a hospital, a bill due today. Urgency that forbids you from checking is the core of the con — a real emergency survives a five-minute pause to verify.

—The money has to move in an untraceable way. Gift cards, a wire transfer, crypto, a payment app, or cash to a courier. Your actual family would use normal, reversible methods — and would expect you to want to confirm first.

—You are told to keep it secret. "Don't tell Mum." "Don't tell anyone." Secrecy has no honest reason here — it exists only to keep you away from someone who would catch the scam.

—They dodge a simple verification. Ask a question only the real person could answer, or say you will call them back on their known number. A scammer will rush, deflect, or get upset. Your real family member will not mind at all.

—The story keeps escalating. One payment becomes another — more bail, more fees, a new complication. A genuine one-off need does not keep growing.

The one move that defeats it

Stop, and verify on a channel you already have. Hang up the call, or put the text down — then contact the real person yourself, using the number already saved in your phone, or reach another family member who can physically lay eyes on them. Do not use the number that contacted you. Do not let anyone talk you out of the pause. Every version of this scam depends on you skipping this one step. Take it, and the scam collapses.

If you have already sent money

If you paid, act quickly — and do not waste a second on shame. You responded to someone you love in apparent danger; that is not a character flaw, it is the exact reaction the scam was built to trigger.

1Contact your bank or payment provider immediately. Say the word fraud. Wire transfers and app payments can sometimes be recalled or frozen if you move within hours — speed matters more than anything else right now.

2If you paid with gift cards, contact the card company straight away. Report the card numbers as used in a scam; occasionally the funds can still be frozen.

3Call the real family member — properly this time, on the number you already have. Confirm they are safe. It is worth doing for your own peace of mind as much as anything.

4Save everything. Screenshot the texts, note the phone numbers, the times, the amounts, and any payment references. You will need them to report.

5Report it. File with the FTC and your local police, or the equivalent authority in your country. Reports are how investigators connect cases and shut these operations down.

6Expect a follow-up scam, and ignore it. Once you have paid, your details may be sold on — including to "recovery" services that promise to claw the money back for an upfront fee. That is the same scam, returning for a second pass.

If money has moved, our recovery guide covers the urgent first 24 hours in detail, and our reporting directory shows exactly who to contact in your country.

One quiet detail makes this scam especially dangerous: it often starts with no money request at all. The first message — "Hi Mum, new number" — only wants you to save the contact and start replying. Days can pass before the ask arrives. If a "family member" messaged you from a new number recently and you saved it, do not assume it is safe just because nothing has happened yet. Verify it now, on a number you already trust, before the crisis is invented.

Set this up with your family — today

This is one of the few scams you can almost completely immunise your family against in a single conversation. Have it before you ever need it:

—Agree a family safe word. Pick a word or short phrase only your family knows — never posted online, never in a social-media bio. Anyone calling with an urgent money emergency must be able to say it. No scammer and no AI voice clone can know a word that exists only inside your family.

—Make "hang up and call back" the rule. Agree out loud that nobody will ever be offended if a worried call is met with "I'm going to hang up and call you straight back." Remove the social awkwardness in advance, and the habit becomes automatic when it matters.

—Talk to the older people you love. Adults over 60 lose the most to this scam. Have the conversation with parents and grandparents directly, kindly, and specifically — describe the grandparent-scam call out loud so they recognise it the moment it comes.

—Tighten what is public. The more voice clips, names, and family relationships a scammer can harvest from public social media, the more convincing the impersonation. A more private profile is a smaller target.

—Make verifying normal. Tell your family plainly: if I ever ask for money urgently, I want you to check. Frame confirming as a sign of care, not distrust — so no one ever feels rude doing it.

Where this fits in the bigger picture

Family impersonation is an imposter scam — the same family of fraud as the fake-police "digital arrest" call we took apart in a separate breakdown. The text version is a form of smishing, covered in our phishing guide; the AI-voice version is covered in depth in our AI scams guide. What sets this one apart is the disguise — not an institution, but a person you would do anything for. That is what makes it the most-reported scam there is, and what makes the one habit above worth building today.

Hold on to the single rule and every version of this scam falls apart on contact: a message can claim to be anyone — only a callback to a number you already trust can prove who it really is.

Not sure if that message is really from your family? Let's check it together.

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Common questions about family impersonation scams

I got a text from my child saying they have a new number. Is it a scam?

Treat it as a scam until you have proven otherwise. 'Hi Mum, I lost my phone, this is my new number' is the single most common opening line of the family impersonation scam — it exists to explain away the fact that the message is coming from a number you do not recognise. Do not reply with anything personal, and do not save the contact yet. Instead, call your child on the number already saved in your phone, or message them there. If they answer, you have your answer. If the new number is genuine, they will completely understand the check.

How do I know if a distressing phone call from a relative is real?

Do not try to judge it by the voice — modern AI can clone a familiar voice from a short clip of audio, and even without AI, a crying or panicking voice is hard to identify. Instead, hang up and call the person back yourself on the number you already have for them. If a 'lawyer' or 'officer' is rushing you for bail or a settlement, that urgency is itself the red flag. A real emergency survives a five-minute pause while you verify.

What is a family safe word and how do I set one up?

A family safe word is a private word or short phrase that only your family knows — never posted online, never in a social-media bio. The rule is simple: anyone who calls or messages with an urgent request for money must be able to say it. No scammer and no AI voice clone can know a word that exists only inside your family. Pick one in an ordinary conversation today, make sure everyone — especially older relatives — knows it, and agree that any urgent money request without it is treated as fake.

They told me not to tell anyone — should I keep it secret?

No. 'Don't tell Mum,' 'don't tell Dad,' 'please keep this between us' is one of the clearest signs of a scam. Secrecy serves the scammer, not your family member: it isolates you from the one thing that reliably breaks the con — a second opinion from someone who is not panicking. A real relative in genuine trouble benefits from more family knowing, not less. If you are told to keep a money request secret, tell someone immediately.

I already sent money to a family imposter. What should I do now?

Act fast and do not waste a moment on shame — you responded to someone you love in apparent danger, which is exactly the reaction the scam is built to trigger. Contact your bank or payment provider immediately and say the word fraud; wire transfers and app payments can sometimes be recalled if you move within hours. If you paid with gift cards, contact the card company right away. Save every screenshot, number, and reference, then report it to the FTC and your local police. Finally, ignore anyone who later offers to recover your money for an upfront fee — that is simply the same scam coming back around.

Sources & further reading

Every figure in this piece is drawn from these authorities and reports. Click any of them to verify.

"Mum, I'm in trouble. This is my new number." The scam that hijacks your love.