Short answer

Voice cloning software can imitate a person from a short audio clip, such as one posted online. You cannot fully prevent copying, so the best protection is not relying on a voice as proof: agree a family safe word, call back on known numbers, and avoid voiceprint-only security at your bank.

Key takeaways

  • A short public recording can be enough raw material for a convincing imitation.
  • Limiting public audio helps a little but cannot make you safe.
  • A family safe word and a call-back habit defeat the scam even if the voice is perfect.
  • Voiceprint-only bank security is considered outdated by some leaders in the AI industry.
  • Scammers rely on panic, so a calm pause is a real defence.

How voice cloning works

Voice cloning software learns the sound of a person’s voice from a recording, then produces new speech in that voice from typed text. The FTC says scammers need only a short audio clip of a relative, which could be taken from a video posted online, plus a cloning program. The result is not always perfect, especially over a noisy phone line, but a frightened listener rarely checks quality.

The FBI also notes criminals have used AI-generated audio to pose as relatives in a fake emergency and, in some cases, to try to get into bank accounts.

The classic scam

You get a call. It sounds like your grandson, daughter or boss. They are in trouble: an accident, an arrest, a lost wallet abroad. They beg you not to tell anyone, and ask for a wire transfer, crypto or gift cards. A second person may join as a “lawyer” or “officer”. Everything is built to keep you from thinking.

The FTC says requests to wire money, send crypto or buy gift cards are warning signs, because those payments are hard to get back. It advises you not to trust the voice, and to hang up and call the person on a number you know is theirs. See also our guide to AI voice clone scams.

What to post, honestly

Cutting what you share helps at the margins:

  • Make social accounts private where you can.
  • Be careful with long videos of you talking clearly, especially of children and older relatives.
  • Keep voicemail greetings brief; there is no need to include your full name.
  • Remember that work videos, podcasts and conference talks may be public anyway.

Do not feel you must disappear online. Many people have voices that are already public. Prevention of copying is partial, so build checks that work even if the voice is perfect.

Safe words and call-backs

A safe word is the simplest fix. Agree on it with the people most likely to be targeted, particularly parents and grandparents. If someone calls asking for money or help, they must give it. If they cannot, hang up.

Pair it with a call-back habit: end the call and ring the person on the number saved in your phone, not one given to you. If they do not answer, try another relative. The same rules protect businesses; see deepfake video call fraud.

Bank voice ID

Some banks let customers log in with a voiceprint. On 22 July 2025, at a Federal Reserve conference in Washington hosted by Fed Vice Chair for Supervision Michelle Bowman, OpenAI’s Sam Altman said “there are still some financial institutions that will accept the voiceprint as authentication.” He added: “That is a crazy thing to still be doing. AI has fully defeated that.” The Associated Press reported the remarks. That is one executive’s view, and banks often add other checks, but it is reasonable to ask yours for a stronger option.

Prefer the bank’s app with device lock, a passkey or an authenticator. If your bank has voice ID and lets you opt out, consider doing so. For suspicious messages claiming to be from your bank, see phishing messages.

If it happens

Stop paying, tell your bank right away and report it to ReportFraud.ftc.gov or the FBI’s IC3. Then tell the family member whose voice was used; they may be targeted again.

What you can do

  1. 01Agree a safe word or question with close family and any older relatives, and never post it.
  2. 02If a relative calls in trouble, hang up and ring them back on their saved number.
  3. 03Set social accounts to private and think before posting videos with clear speech.
  4. 04Ask your bank to turn off voice ID if it offers it, and use an app, passkey or authenticator instead.
  5. 05Let unknown numbers go to voicemail; do not say 'yes' or confirm details to cold callers.
  6. 06Report attempts to the FTC at ReportFraud.ftc.gov or to your national fraud service.

Related reading: AI voice clone scams and the data breach tracker.

Frequently asked questions

How much audio does a scammer need to clone a voice?

The FTC says a scammer needs only a short clip of a family member's voice, which could come from content posted online, plus voice-cloning software. Quality varies by tool.

Should I stop posting videos of myself?

You do not have to. Private accounts and fewer public clips reduce exposure, but the better defence is not treating a voice as proof of identity.

What makes a good family safe word?

Something short, unusual and not findable online, such as a private joke or odd phrase. Share it in person or by phone, never in a group chat or post, and change it if it leaks.

Is voice ID at my bank safe?

It is weaker than it used to be. At a Federal Reserve conference on 22 July 2025, OpenAI's CEO Sam Altman called accepting voiceprints 'a crazy thing to still be doing' and said AI has fully defeated it. Check whether your bank also requires another factor.

Sources

  1. Scammers use AI to enhance their family emergency schemes, Federal Trade Commission, 2023-03-16
  2. Criminals Use Generative Artificial Intelligence to Facilitate Financial Fraud (PSA I-120324), FBI Internet Crime Complaint Center, 2024-12-03
  3. OpenAI's Sam Altman warns of AI voice fraud crisis in banking, Associated Press (via WSLS), 2025-07-22

This article reflects public information as of 2026-11-05. AI tools and rules change quickly; we update articles when new facts are published. Spot an error? See our editorial and corrections policy.