Doorstep fraud

How to spot a fake doorstep worker

The doorbell rings and someone in a uniform shows you an ID card: the water company, because there is a leak nearby and your water might be brown. Or the council, for a free talk about home energy upgrades. Or the meter reader, or a repairman who happened to be in the area. The Dutch police describe exactly these stories as the core of the doorstep trick (babbeltruc): fraudsters present themselves as meter readers, repairmen or police officers, or claim to be from the bank or home care, and sometimes ask for a glass of water or a pen while an accomplice slips inside (politie.nl, what is a doorstep trick).

What makes the story credible is not the language but the props: a uniform, tools, a badge and a reason why you should check something — precisely at the moment your attention is on the pipe, the meter or the scooter in the hallway (ANBO-PCOB, doorstep tricks).

The rule that breaks the pattern is short: an organisation that needs something from you announces it in writing or in your own app — not through someone standing unannounced at your door, and never tied to a payment or a PIN.

Direct answer: five checks before you let anyone in

1. Let nobody in without an announcement you can point to. Municipalities stress that their staff do not visit residents unexpectedly, and that a visit or campaign is always announced in writing first (RTV-Ridderkerk, 25 August 2026; Energie Dongen, doorstep warning). If you cannot find that letter or message, there is no visit.
2. Call the organisation yourself, with the door closed. Ask for identification and verify it not at the door but through a number you looked up yourself, while the visitor waits outside (ANBO-PCOB). A badge and a uniform can be made; only the organisation can confirm that someone was sent and for what.
3. Pay nothing at the door, and never go along with a card payment. An unexpected repair bill or charge at your door is wrong, and you never pay at the door for something you did not order yourself (ANBO-PCOB; municipality of Veenendaal, preventing doorstep tricks). Never hand over your bank card, and never let anyone "check" or "confirm" something on your phone or banking app.
4. Watch for the second person — or better, keep the door shut. The pattern almost always involves two people: one keeps you talking while the other goes inside (politie.nl). If you fetch something, close the door behind you and never leave a stranger alone in the hallway or living room.
5. Anyone inside, on the way, or just gone and something feels wrong? Call the emergency number 112. That is the police advice, including passing on a description and vehicle details such as a licence plate; the police and broadcaster MAX run a national campaign against doorstep tricks (politie.nl). No immediate danger but a suspicious person? Call the non-emergency police line 0900-8844 and report it (RTV-Ridderkerk).

Why the story works

A doorstep trick is not a hacking trick, it is role-play. The visitor plays a role you already know — utility worker, council official, mechanic — and uses your politeness as the way in: you do not want to be rude to someone doing his job (ANBO-PCOB). The story also hands you a task that absorbs your attention: keep an eye on the water, read the meter, fill in a form. That distraction is functional: while you look, someone searches elsewhere in the house. The police describe the mirror-image version too — asking for a glass of water or a pen — with the same purpose (politie.nl).

What AI changes here

AI changes nothing about the script, but a lot about the props. An ID card, a letter in a municipality's house style, a workwear logo or a "fault report" on a phone screen can be produced with image generators and a language model in minutes: error-free and in the right tone. The failure is therefore no longer in the layout but in whether the appointment exists: was someone actually sent, and for what? That is the question you can put to the organisation yourself, and the one the visitor cannot answer for you. The "confirmation email" or "work order number" shown on a screen is no proof either: you are looking at an image that could have been made yesterday.

What a detector does and does not see

If you are left with a note, a card, an email or a photo of a badge, you can run the text through the text detector and the image through the image detector. That is triage: it helps you decide which item to verify first and gives you a signal to keep with a report. It says nothing about the person at your door. Templates and short texts contain too little writing style for a reliable signal, and a hand-made letter can stay entirely silent. A low score therefore never proves the visitor is genuine.

What a visit cannot tell you

• whether the visitor really works for that company or body, even with a uniform, tools or a badge that looks correct;
• whether there really is a fault, leak, meter reading or campaign in your area;
• whether a repair or subscription you are offered exists and what it costs;
• whether this is fraud; only a law-enforcement body can establish that.

Treat the visit as a reason to check with the organisation yourself, never as evidence that something is wrong with your home.

If someone has already been inside

• Call 112 if the visitor is still inside, nearby or has just left; pass on a description and vehicle details (politie.nl).
• Paid, transferred or handed over a card? Call your bank immediately on a number you found yourself; speed decides whether a block or a recall is still possible.
• Check what is missing and whether anything changed in your records or on your phone; change passwords that were visible during the visit or on your device.
• Keep everything: time, description, vehicle and licence plate, the badge or note, and what was said or taken.
• Report it to the police (0900-8844, 112 in an emergency) and file a report if there is damage or theft; the Dutch Fraud Helpdesk report form has specific doorstep options so the pattern is registered (Fraudehelpdesk, reporting as a private individual).

If instead someone calls claiming to be police and offers to take your valuables into safekeeping, follow the five checks on a fake police officer. If the caller claims to be your bank, use the five checks on a fake bank call. If you were left a note or card with a payment request or QR code, use the check on a fake QR code. To check a note, email or photo on its own, use the free checker.

Frequently asked questions

Someone from the water company is at my door with an ID card. Is that enough?

No. ANBO-PCOB describes exactly this story — a leak nearby, checking whether your water is brown — with an ID card shown while an accomplice strikes. Ask for identification and call to verify while the door stays closed; genuine workers understand that (ANBO-PCOB).

The council says someone is coming about energy upgrades. Is that real?

Verify it with the council itself on the number from its own website. Municipalities announce a visit or campaign in writing first and their staff carry official identification; without an announcement and your own check, let nobody in (Energie Dongen; RTV-Ridderkerk).

Does a high detector score prove the visitor is a fraudster?

No. The score describes patterns in a text or a file and says nothing about the identity of the person at your door. A hand-made note can stay entirely silent while a genuine council letter can draw a signal from its formatting. Use the outcome as triage, not as proof.