KRAI-A

They don't pick an age. They pick whoever picks up. On Nov 2, 2026 in Bangkok, a 19-year-old student was told her number was used to promote online gambling, passed to a fake "officer" on a LINE video call, and lost about ฿400,000 (Thairath, Nov 3). Worldwide, 57% of adults met a scam in the past year and 23% lost money (GASA × Feedzai, 2025). Gangs switch numbers, so a blocklist misses the first call from a new number; the script is what gives them away. KRAI-A picks up instead. It says up front that it is an automated assistant and that the call is recorded. It answers in Thai, English or Mandarin and judges every caller sentence. A scammer gets a polite hang-up or a stalling trap; a real caller leaves a message. Every call ends with a report for the family: who the caller claimed to be, the tactic, and the accounts, LINE IDs and links they gave, in their own words. Blocklists know numbers. Call screeners hand the decision back to you. KRAI-A judges the script and hangs up itself — and every number behind that is on /proof, misses included: 0/116 real callers judged scam across 4 sealed sets; scams blocked 34/34 (Thai/English), 57/59 (9 languages), and 31/59 on an adversarial stress set, where 24 more were held as a message and 4 slipped through. Try it (recorded calls, or be the scammer on your mic): https://beta.krai-a.com/demo-live Built during the hackathon; our pre-hackathon prototype is a frozen baseline, not part of this entry.