I posted a sales listing on Dosa, and someone from an unfamiliar platform called Busjangter asked to trade. They requested I use their secure payment system, which made me feel uneasy, so I refused midway. When the cancellation didn't go through, they started asking me to make a deposit—resorting to the typical voice phishing playbook—which snapped me right back to attention. Everyone posting on Dosa, please be careful.