South Korea’s three major cryptocurrency exchanges–Allbit, Cashiers and Bitsonic—have initiated a joint campaign to upgrade their images.

The leaders of the three exchanges have agreed to kick off a public campaign to create a reliable and trusted trading culture.

They also agreed to share technological knowhow to ungrade security for trading and customers.

They said South Korea is overcrowded with so many exchanges. The mushrooming of many questionable exchanges has deepened public distrust in the cryptocurrency trading, they added.