Traders walked into a “free Bitcoin” trap on Bithumb and it triggered a 17% flash drop

One input mistake at South Korea’s Bithumb turned a routine promo payout into a $44 billion disaster for a simple reason: crypto moves at internet speed, but many exchanges still run on back-office habits built for slower systems. On Feb. 6, Bithumb meant to hand out tiny cash rewards as part of a promotion…