SEOUL: With phone scams reaching record levels in South Korea, the Korean National Police Agency (KNPA) has launched a new public-driven campaign aimed at identifying and stopping scam syndicates using voice analysis technology.
The campaign, titled “Voice Wanted”, was developed with advertising agency Cheil in response to phone scam losses that have reached US$680 million (approximately one trillion won) this year alone.
Authorities say scammers are using increasingly sophisticated methods, including fake delivery alerts, impersonation of government officials, and AI-generated voice cloning.
KNPA said each human voice carries a unique pattern, similar to a fingerprint. Under the initiative, members of the public are encouraged to report scam calls and submit audio recordings, allowing police to extract “voiceprints” that can be matched against a growing database to identify repeat offenders and organised crime networks.
The campaign features posters built from actual voice waveforms of scam callers, presented as digital portraits. Each poster includes a QR code directing the public to an interactive platform where they can learn about emerging scam tactics and upload recordings of suspicious calls.
Police said aggregated voice data will allow investigators to cross-reference scam calls using advanced voice analysis tools. Telecommunications companies may also use the data to flag or block potential scam calls in real time.
A promotional short film accompanying the campaign illustrates how law enforcement traces scam voices and dismantles criminal networks. Acting KNPA Commissioner Yoo Jae-sung said the initiative focuses not only on awareness but on prevention, emphasising that public participation plays a key role in disrupting phone scam crimes.
The campaign is being rolled out online and through out-of-home advertising, with 14,000 posters displayed nationwide. Source: Campaignasia
HackWarn.com Analysis
Why this approach is significant
South Korea’s initiative highlights a shift from reactive scam response to proactive, data-driven prevention.
By treating scam calls as forensic evidence rather than isolated incidents, authorities can identify repeat offenders faster and uncover organised networks behind large-scale fraud operations.
Key takeaway for other countries
Scams increasingly rely on voice impersonation and AI cloning, making traditional blocking methods less effective.
“Voice Wanted” using Voiceprint databases combined with public reporting can strengthen early detection, support telecom-level warnings, and reduce victim numbers before financial losses occur.
What the public should learn from this
- Scam calls are not random. Many are linked to repeat voices and syndicates
- Reporting scam calls helps protect others, not just the individual victim
- Audio evidence can now play a critical role in law enforcement investigations
