Their Application design is very poor and their development server is weakly configured. The hack was a little tricky and involved many steps to get to the database. Once we got to the database it was like winning a lottery. It had all the user details along with credit card transaction history and unused vouchers. The voucher codes are not even out yet. Its obvious that we wont be using credit card details and voucher codes. We dropped them a mail but no response from their side as of now.
Update: Official statement is now here:
There has been no security lapse, whatsoever to any user data. The alleged hack seems to have been performed on a staging environment when exposed for one of our test runs. The staging environment is on a completely different network compared to our production environment, and only has dummy user values exclusively used for internal testing purposes. We confirm that there has been no attempt by the hackers to reach out to us in this regard. Security and privacy of customer data is paramount to us at Ola.