While watching a show online, a pop-up informing me that my computer had been locked.

Message informed me to call a Microsoft number shown on screen. So I called, and the person on the other line had a thick Indian accent answered. My call was subsequently transferred to a Filipino woman, who introduced herself as “Sandra? She asked for my personal and confidential information which I gave. Subsequently, I checked my DBS account later and realised about $4,000 was gone.