The rule applies to all registered cryptocurrency exchanges in Singapore. They must hold customer funds in secure trust accounts managed by independent trust companies. Trusts must adhere to strict security and financial reporting standards. About I read more
https://www.thestreet.com/cryptocurrency/singapore-forces-crypto-exchanges-to-move-cryptocurrencies-to-a-trust and realized that this is a valid good solution. In my opinion, more countries should take such security measures.