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Lesson 6 of 7 · 14 min · Checked on 6 October 2026

AI scams: cloned voices, fake videos and phishing

By the end of this lesson you will be able to:

  • Recognise the signs of a scam, even when it is made with AI
  • Agree simple defences with your family, such as a code word
  • Know where to report a scam or fake content in Portugal

The granddaughter's call

It is nine at night. The phone rings. It is your granddaughter's voice, crying: "Grandma, I had an accident, I need money right now. Don't tell Dad." It is her voice, her way of talking. But it is not her.

Today a few seconds of recording (a social media video will do) are enough to imitate a voice convincingly. Scams are old; AI only made them more convincing.

The four most common tricks

Example

Cloned voice. A relative "in trouble" calls or sends an audio message asking for money urgently, by MB WAY (a Portuguese instant-payment app) or bank transfer.

Fake video of a public figure. A well-known presenter, footballer or politician appears in an ad recommending an investment "that triples your money". The face and voice were made with AI.

The perfect email or SMS. Scams used to have spelling mistakes. Now AI writes without errors, with the logo and tone of the bank, the tax office or the post office.

Fake profiles. AI-made photos, weeks of friendly chat (romance, a job, an investment) and, one day, a request for money.

The signs are always the same

The technology changes. The scammer's tricks do not:

  • Urgency: "it has to be now", "or you lose everything".
  • Secrecy: "don't tell anyone", "don't talk to the bank".
  • Money or codes: transfer, MB WAY, cards, the code that arrived by SMS.
  • A strange channel: a new number, "I changed phone", a link in a message.

If you see two of these together, stop, however real the voice or video seems.

Watch out

Do not rely on "spotting flaws" in the image or the voice: fakes keep getting better. Your defence is not the eye or the ear: it is the method. Always confirm by another route.

The defences that work

  • A family code word. Agree, aloud, on a word only you know. On an emergency call, ask for the word. If the person does not say it, nothing is confirmed: people can forget the word, so hang up and check another way before sending any money.
  • Hang up and call back, on the number you already had saved, not the one that called you.
  • Check through another channel. Message another relative. Go to the bank. Call the school.
  • Never give out SMS codes. Not to the "bank", the "police" or a "technician". No legitimate person asks for them.
  • Look for the original video, on the person's official channel or in well-known newspapers. If it only exists in that ad, be suspicious.
  • Do not click links in messages. Type your bank's or the tax office's address yourself.

Tip

Agree the code word today, at dinner or at the next family lunch. Choose something easy to remember and hard to guess: no pets' names or dates that are on social media.

Tip

If you post lots of videos with your voice, warn the older people in your family: they usually get the fake call.

Where to report in Portugal

If you were a victim, or nearly were, do not be ashamed: it happens to careful people. Reporting helps stop the next attempt. Outside Portugal, use your country's equivalent.

  • If you gave money or bank details: call the bank straight away, on the number on your card or the official website, and ask them to block it.
  • PSP, GNR or Polícia Judiciária (the police forces): report it at a police station or post. Fraud is a crime.
  • Linha Internet Segura, run by APAV (a victim support association), helps victims of internet crime on the free line 800 21 90 90 (weekdays, 8 am to 11 pm), and confidential reporting of illegal content, at cibercrime.apav.pt/index.php/linha-internet-segura (in Portuguese).
  • CNCS (the National Cybersecurity Centre): alerts about scams in progress and incident reporting, at cncs.gov.pt.
  • On the platform: use the "Report" button on Facebook, Instagram, WhatsApp or YouTube, on the ad or the fake profile.

This is how it looks on 6 October 2026; your screen may differ. If a number or address stops working, search for the organisation's name.

Fake intimate images

Today there are programs that "undress" an ordinary photo or put someone's face into a sexual video. It is a serious assault, and it happens at school too.

When it involves minors, it is a serious crime, even if the image is fake. With adults, sharing these images without consent may also be a crime: the Portuguese Penal Code covers this in several articles, and the police or a lawyer can tell you which applies.

In the EU, Directive (EU) 2024/1385, on violence against women and domestic violence, requires Member States to criminalise producing or manipulating images or videos that make it look as if a person is engaged in sexually explicit activities and then making them accessible to the public by digital means, without that person's consent, where this is likely to cause them serious harm (Article 5(1)(b)). Countries have until 14 June 2027 to make it law. In practice: this is a matter for the police, not something to "ignore".

What to do: do not share it, not even to "warn" someone. Note where the image appeared: the page address, the profile name, the messages and the dates; for an adult victim, dated screenshots also help. If the victim is a minor, never copy, keep or forward the image, not even for the police: having or passing it on may itself be a crime. Note where it is and let the police collect it. Report it to the police and the Linha Internet Segura, and ask the platform to remove it. It is never the victim's fault.

This is not legal advice.

Exercise: train your eye and agree the plan

AI can also help you defend yourself. Use a suspicious message you have received, without your details and without clicking the link.

I think this message is a scam. List the scam signs you see in it, one by one, and tell me what to do next. Do not open any link. Message: [paste the message here, without your details]

Exercise

How I know it worked a list of signs you recognise in the message and an agreed code word never written in any message or post.

If it didn't work

  • No suspicious message saved? Ask the AI: "Write an example of a fake SMS from the tax office, so I can practise spotting the signs." Then point them out yourself.
  • The AI says the message looks genuine, but you are suspicious? Treat it as a scam: AI can be wrong too. Confirm through the official number.
  • Family thinks the code word is over the top? Show them the granddaughter's call. It takes a minute and can save a lot.

Videos

Como identificar uma chamada clonada por inteligência artificial
DW Português para África · 1 min · PT · subtitles · Watch on YouTube
DW explains in just over 1 minute how scammers clone a voice from a short clip, and advises hanging up and calling back on the usual number.
Can you spot an AI scam? | BBC Ideas
BBC Ideas · 4 min · EN · subtitles · Watch on YouTube
BBC Ideas offers, in 4 minutes, tips for spotting AI scams: deepfakes, romance scams and rental scams.

Test what you learned

1. You get this on WhatsApp: "Hi mum, I changed number, my phone fell in the water. I need to pay an urgent bill, can you send me money by MB WAY?" What do you do?
2. On Facebook you see a video of a well-known presenter recommending a platform that "guarantees" profits. What is the best reaction?
3. Someone calls you "from the bank" and asks for the code that has just arrived by SMS, to "cancel a transfer". What do you do?

Corrections to this lesson (1)
  • : After an external review: the code word no longer serves to "prove" that someone is not family (a person can forget it); the explanation of Directive (EU) 2024/1385 now says exactly what it requires to be punished (making or manipulating the image and then making it public, without consent); articles of the Portuguese Penal Code are no longer named without confirmation; the advice on evidence now separates what to keep when the victim is a minor; the contacts were checked on 6 October 2026 and the Linha Internet Segura link now points to the APAV page; the quiz options were reordered.