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Fake relative on WhatsApp scam : fonctionnement, signaux et que faire

Social engineering · médio

The scammer messages from an unknown number using a photo of a child, nephew or friend (copied from social media): "Hi, I changed my number, save this one".

After a short chat comes the request: pay an urgent bill or make a transfer because "my banking app is locked on the new phone". The receiving account belongs to someone else, with a ready excuse.

Variants include a fake boss asking you to pay a supplier, and AI-generated voice notes that mimic the relative's voice.

Sinais / Signs

  • New number with a familiar person's photo.
  • Request for money within the first few messages.
  • Receiving account in a third party's name.
  • Refusal to video call or talk on the old number.
  • Writing style or phrasing unlike the real person.

Prevenção / Prevention

  • Call the person's old number or another relative before paying anything.
  • Agree on a family code word for emergencies.
  • Ask a question only the real person could answer.
  • Limit who can see your profile photo and contacts on social media.
  • Be wary of voice notes too: voices can be cloned with AI.

O que fazer / What to do

  • Call your bank right away using the official number (back of the card or in the app) and ask to block cards, accounts and access.
  • If you paid via Pix, ask your bank to open a MED (Special Return Mechanism) claim as soon as possible — time matters because funds move fast.
  • File a police report (many Brazilian states accept online reports) and keep screenshots, receipts, numbers and links.
  • Report the profile, ad or number to the platform (WhatsApp — Report option) so it gets taken down and others are protected.
  • Warn the person whose photo was used and other relatives, as the scammer usually tries several contacts.

FAQ

How do I know it's really my child on the new number?

Call the old number or ask for a video call. If they make excuses not to talk, treat it as a scam.

How is this different from WhatsApp account takeover?

In the fake-relative scam the fraudster uses another number with the person's photo; in account takeover they hijack the real account. Both are reported as "WhatsApp scams".

Radar

  1. — Fake-sale scam soars 314% and leads bank customer reports in Brazil. In H1 2025 there were 174,000 fake-sale reports and 139,000 fake call-center reports (+195.7%); WhatsApp scams fell 9.9%. Source: Febraban (via Diario de Pernambuco)

Diario de Pernambuco — Febraban: golpes mais relatados por clientes bancários (1º sem/2025) · CERT.br — Cartilha de Segurança para Internet · FTC — ReportFraud

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