I believe that as long as exchanges, developers and holders of electronic wallets neglect security, the number of robberies and multi-million thefts grow.
Unfortunately, this is a sad truth. No matter how users protect themselves, hackers will still steal their money from the accounts of crypto-exchange exchanges.
You are right and even the most reliable can become a victim of hackers, and not always they manage to restore their financial position, not to mention the reputation.
To regain its reputation, exchanges have to hold different competitions and allocate a lot of money for the next advertising campaign. In another way, new traders are difficult to attract.