If the amount stolen is huge, probably the exchange may close down like what happened to WazirX, although the CoinCDX might later reopened. What I read last about the exchange (WazirX) was that their users can only be able to get 80% of their coins back. I have not read any news that the exchange has reopened or give their users back their money.
The amount is definitely huge for exchange like coinDCX but they claim there's no user funds are lost but the reality is the withdrawals are delayed and they said it will take 72 hours. You may think that the delay is for fiat not for crypto but the fact is in Indian exchanges we can't withdraw any cryptos to our wallets so only way to withdraw is via INR and it's currently delayed.
No Halt in Withdrawals, Operations Running Normally
CoinDCX services remain fully operational. Trading activity, INR deposits and INR withdrawals continue. INR withdrawals below ₹5 lakhs will reflect in your account within 5 hours, while withdrawals above ₹5 lakhs will be processed within 72 hours. The incident was isolated and has no impact on your portfolio access or operations.
Regarding wazirx, users claimed 66% of their funds backed but their official statement is 85% are refunded but many user's can't able to reach since they keep shifting their operation to different countries.

The exchange (CoinCDX) was hacked on the 18th of this month and it was reported on the 19th of this month that it was hacked. It got to the general board on this forum on the 20th of this month.
Maybe you missed my thread :
Indian Exchange CoinDCX hacked?, which I posted not more than an hour it's posted by ZachXBT and even the official report came out after that.
