Are You Speaking with the Right Person? Stop Phone Spoofing

Are You Speaking with the Right Person? How Two-Way Verification Stops Phone Fraud and Spoofing

Fraudsters can spoof caller ID and now possess your CPR number and address. Learn how real-time two-way MitID verification with KvikID ensures you always know who is on the line.

Author: Ricco (Founder & Head of Security) Updated: 2026-10-07 Reading time: 6-7 min read

To-vejs identitetsverifikation på smartphone med KvikID og MitID mod telefonsvindel

Key Takeaways

Phone spoofing allows criminals to display authentic bank or police telephone numbers on your mobile screen.
Armed with leaked personal registry data, fraudsters quote personal details to convince victims to surrender funds or credentials.
Sikkerdigital.dk advises everyone to hang up and call back on official publicly listed telephone numbers.
KvikID solves the challenge for customer service and citizens: the company enters the person’s CPR number, the recipient receives a prompt in their MitID app, swipes to approve, and is instantly verified.

Why verbal security questions are obsolete

Verbal screening questions like »Please state your CPR number and address« no longer provide security when millions of personal records have been exposed.

Customer service agents need a tamper-proof verification mechanism that does not rely on memorized or leaked personal details.

What is caller ID spoofing?

Spoofing allows scammers to display the genuine telephone number of trusted institutions such as local police stations or bank branches. Combined with leaked data, victims are easily deceived unless verified cryptographically.

Sikkerdigital.dk: Are You Speaking with the Right Person?

The national cybersecurity agency advises consumers to remain skeptical of unexpected inbound requests, hang up immediately, and independently call back verified main telephone lines.

How KvikID operates for customer service

With KvikID, the enterprise enters the individual's CPR number into the platform during the call. The person receives a prompt directly in their MitID app, swipes to approve, and an instantaneous verified confirmation displays on the agent's screen in seconds.

Frequently Asked Questions (FAQ)

How does caller ID spoofing work?

Spoofing exploits telephony protocols to present an arbitrary caller telephone number, making the call appear to originate from a legitimate entity.

How does KvikID prevent spoofing?

KvikID connects directly to official MitID identity infrastructure. Impersonators cannot approve a MitID challenge without physical access to the genuine user's biometrics.