In my opinion these are very important indicators and they are favorites for people engaged in crypto currency:

The centralized part of the exchange offers highly secure custody services with cold storage and cryptographic proof of reserve.
Cryptocurrencies are held in cold storage (offline) for at least 98% of reserves.

A cold wallet access requires multiple signatures. 

A cold wallet private key is split and held in a number of different vaults in multiple 
locations. 

Other in-house security processes and technological features.
Internal procedures protect the exchange from social engineering attacks. 
Periodic technical audits and timestamped logs allow detection of any tampering 
attempts in the accounting database.
Periodic financial audits verify that the inventory of coins (assets side) matches the 
records of liabilities with cryptographic proof. If the exchange’s customer balances are checked against a blockchain inventory of coins (utxos in Bitcoin language) every block interval, there is little or no room for a rogue intruder to alter database records with profit.
Decentralized settlement relies on fair-exchange protocols allowing atomic swaps of cryptocurrencies to eliminate the counter-party risk inherent to a custodial exchange.
...

He will be able to attract large investors, it's only a matter of time! In my opinion