A stranger is messaging me on WhatsApp: how to check
A number you don't have saved messages you on WhatsApp with a job offer, a "Hi Mum, this is my new number" or a prize. Check before you reply.
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A stranger is messaging me on WhatsApp: how to check
A number you don't have saved messages you on WhatsApp. Sometimes it's a real contact with a new phone, but most of these messages are scam attempts: reports from the NoCall community include more and more numbers operating through messaging apps.
1. The 3 most common scams
- Fake job offer — "Earn money liking posts" or reviewing products: tasks that end up asking you to pay something upfront.
- The "Hi Mum" scam — "Hi Mum/Dad, this is my new number", followed by an urgent request for money.
- Prize or giveaway — You've "won" something, but you have to pay a fee or hand over your bank details to release it.
2. Check through another channel
Don't carry on the conversation with the new number: call the person on the number you already have for them, video-call them, or ask something only they would know. A real relative will be glad you checked.
3. Never share codes
Nobody genuine will ask you for a verification code. If someone asks for the WhatsApp code you've just received by text, they're trying to take over your account.
4. Block and report
In the chat, tap the number and choose "Block" and "Report". Report it on NoCall too, to warn other users. If a supposed relative asks you for money, read our step-by-step guides first; if you've already paid, call your bank straight away and report it to Report Fraud (formerly Action Fraud) on 0300 123 2040, or to Police Scotland on 101 if you're in Scotland.
Why is a stranger messaging me on WhatsApp?
It could be a real contact with a new number, but most often it's a scam: fake job offers, the "Hi Mum" message asking for money urgently, or prizes that require a fee to release them.
How do I check whether the message is genuine?
Don't play along on the new number: call the person on their usual number or through another channel. Be wary of urgency, sloppy wording and any request for money or verification codes. For advice on a possible scam, you can contact the Citizens Advice consumer service (in Scotland, Advice Direct Scotland; in Northern Ireland, Consumerline).
How do I report and block the number on WhatsApp?
Open the chat, tap the number and choose "Block" and "Report". You can also report the number on NoCall to warn other users; GOV.UK and the NCSC explain how to report other scam messages.
Sources and review
Reviewed:
- Phishing scams: how to spot and report them | National Cyber Security Centre
- Report a scam - Citizens Advice
- Avoid and report internet scams and phishing - GOV.UK
Numbering, carrier tools, and reporting procedures can change. Verify sensitive steps with the linked primary authority.
Article details
Editorial content reviewed by NoCall with practical context for spotting suspicious calls and messages.
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