Deepfake Video Calls

Real-world analogy

What is it?

A deepfake video call uses artificial intelligence to generate a real-time video of someone's face and voice during a live call. Unlike older pre-recorded deepfakes, modern versions respond to your conversation in real time -- the fake person reacts to what you say, answers your questions, and shows natural-looking facial expressions. This makes it nearly impossible to tell you're talking to AI instead of a real person.

Real-world relevance

A father video-called his daughter every Sunday. One weekday, he received an unexpected video call showing her face. 'She' asked him to invest a large sum in a special retirement plan her company was offering. He could see her face, hear her voice, watch her expressions. He transferred the money. When he texted his real daughter for confirmation, she had no idea what he was talking about. She hadn't called him that day. The person on the video call was an AI deepfake. He lost tens of thousands and couldn't get it back. The full case study is in the book.

Key points

• Real-Time Deepfakes Are Here Now — In 2024-2025, deepfake videos were pre-recorded. By 2025-2026, real-time deepfake video became common -- the AI generates video on the fly, responding to what you say. You can have a full interactive conversation with a simulated person who looks and sounds exactly like someone you know.
• The $25 Million Case That Proved It Works — A finance worker received a video call showing his CFO, CEO, and multiple colleagues -- all requesting a $25 million transfer. He verified it looked like a legitimate business call and authorized the transfer. Every single person on that call was AI-generated. Not one was real.
• Seniors Are Prime Targets — Older people are more likely to use video calls to stay in touch with family. They learned to use FaceTime, Zoom, and WhatsApp because it lets them see grandchildren. That willingness to accept video calls is now being weaponized against them by scammers.
• Spot the Lip-Sync Lag — Sometimes there's a small delay between when the person's lips move and when you hear their voice. Real video call delay is uniform throughout. Deepfake delay is often specifically in the lip-sync -- the mouth movements don't quite match the words.
• Watch the Blinking — Humans blink about 17 times per minute in conversation. Deepfakes still struggle with natural blinking patterns. The person might blink too slowly, too fast, or at odd intervals. This is one of the most reliable visual detection methods.
• The Quick-Turn Test — Ask the person to quickly turn their head to one side and back. A real person does this smoothly. A deepfake might jitter, blur at the edges, or move unnaturally. Also watch for missing peripheral details -- does hair fall naturally? Do glasses reflect light correctly?
• Ask the Unexpected — Deepfakes handle scripted conversations well but struggle with truly unexpected questions. Ask about a very specific shared memory, request they hold up a specific object, or ask them to describe something detailed about their surroundings.
• The Verify-First Rule — The most important protection: NEVER make financial decisions during a video call, no matter who is on the other end. If ANYONE asks for money, access to accounts, or financial information during a video call, hang up and call that person back on a known phone number.
• Establish a Family Code Word — In addition to callback verification, establish a secret code word or phrase that only real family members know. Use it during any video call that involves financial requests. A deepfake won't know the code word because it was never shared online or in any data the AI could learn from.
• Write Down Real Phone Numbers on Paper — Keep a physical written list of real phone numbers for family members posted where your parents can see them. These should be actual written numbers they can use to call back -- not just contacts in their phone, which could potentially be spoofed or manipulated.

Code example

DEEPFAKE VIDEO CALL PROTECTION CHECKLIST
=========================================

BEFORE any video call involving money:
[ ] Is this call at an unusual time? (Red flag)
[ ] Is the request urgent with a tight deadline? (Red flag)
[ ] Are they asking for money or account access? (Red flag)

DURING a suspicious video call:
[ ] Watch lip sync -- do lips match audio perfectly?
[ ] Count blinks -- about 17/minute is normal
[ ] Ask them to turn their head quickly
[ ] Ask an unexpected personal question
[ ] Request the family code word
[ ] Look for background inconsistencies

IF money is requested on ANY video call:
[ ] Say: 'I need to call you back to confirm'
[ ] HANG UP immediately
[ ] Wait 5 minutes
[ ] Call back on a KNOWN number (from your paper list)
[ ] Verify the request with the REAL person
[ ] If they confirm -- great, proceed carefully
[ ] If they don't know what you're talking about -- SCAM

NEVER do during a video call:
[X] Transfer money during the first call
[X] Share bank account details
[X] Provide passwords or PINs
[X] Click links they send in chat

Line-by-line walkthrough

1. 1. DEEPFAKE VIDEO CALL PROTECTION CHECKLIST -- This is your family's defense plan against AI-generated video impersonation.
2. 2. BEFORE any video call involving money -- Before you even engage, check for warning signs.
3. 3. Is this call at an unusual time? -- Scammers often call outside normal patterns to catch you off guard.
4. 4. Is the request urgent with a tight deadline? -- Urgency is the #1 manipulation tactic. Real requests can wait 5 minutes for verification.
5. 5. DURING a suspicious video call -- If something feels off, run these checks while still on the call.
6. 6. Watch lip sync -- Deepfakes sometimes have a slight mismatch between lip movements and audio. Real delay is uniform; deepfake delay is specifically in the lip-sync.
7. 7. Count blinks -- About 17 per minute is the human average. Significantly more or fewer suggests AI generation.
8. 8. Ask them to turn their head quickly -- Real people move smoothly. Deepfakes may jitter or blur at the edges of the face.
9. 9. Ask an unexpected personal question -- Something only the real person would know. Deepfakes handle scripts well but struggle with truly unexpected questions.
10. 10. IF money is requested on ANY video call -- This is your absolute red line. No exceptions, no matter how real they look.
11. 11. Say 'I need to call you back' -- This one sentence defeats the entire scam. A real person will understand. A scammer will push back with urgency.
12. 12. HANG UP and call back on a KNOWN number -- Use the physical phone number list posted by the phone. Never call a number the caller gives you.
13. 13. NEVER transfer money during the first call -- This rule alone would have saved a deepfake victim his money.

Spot the bug

Your father gets a video call from your sister. She says: 'Dad, my car broke down and I'm stranded. I need $2,000 wired to this mechanic's account right now. My phone is about to die so I can't call back. Please just send it -- I'll pay you back tomorrow. The mechanic's account number is 4839201...'

Explain like I'm 5

Fun fact

Hands-on challenge

More resources

• FBI Warning: Deepfake Video Used in Fraud Schemes (FBI Internet Crime Complaint Center)
• The $25M Deepfake Video Conference Call (CNN)
• Report Suspected Deepfake Fraud (FBI IC3)