Written for people in the middle of a deal, not for security professionals. Each one covers what the scam actually looks like in a chat, and — just as importantly — what looks alarming but is perfectly normal.
Bank transfer instead of Danggeun Pay, fake safe-payment links, a sibling holding the item, the ten-minute deadline — and the four things that look suspicious but are not.
The scam that turns your caution against you, why every surface-level check passes, and the single rule that defeats it.
Distance is not the red flag. Payment method is. A ranking of what actually protects you.