# Researchers build Real-time romance scam chatbot using Line API

Digest AI · Society & Work · published 2026-10-16T04:00:00Z

Canonical: https://digestai.news/story/researchers-build-real-time-romance-scam-chatbot-using-line-api

## Summary

A team of researchers has developed a chatbot that detects romance scams in real time via the Line Messaging API. The system uses a large language model to analyze conversations against seven established stages of social engineering in romance scams. When a potential scam is flagged, the chatbot explains the detected stage and offers prevention advice, all generated by the model.

The work, posted on arXiv, is framed as a practical application to reduce risks in real-world scenarios. The chatbot’s design leverages existing social science theories to classify suspicious behavior dynamically. No deployment details or user testing are mentioned in the abstract.

## Key points

- Chatbot uses Line Messaging API to monitor conversations for romance scam red flags in real time
- Detects scams by matching conversations to seven social science-defined stages of manipulation
- Provides explanations of detected stages and prevention advice via the same large language model

## Why it matters

A real-time detection tool could cut the time between first contact and scam escalation, but its effectiveness depends on adoption by platforms and users.

## Sources

1. [Real-time Chatbot Romance Scam Detection in Stage Classification](https://arxiv.org/abs/2610.20631) (arXiv cs.CL, 2026-10-16, primary source)

## Cite

Digest AI, "Researchers build Real-time romance scam chatbot using Line API", 16 October 2026, https://digestai.news/story/researchers-build-real-time-romance-scam-chatbot-using-line-api

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