Shoot that hurts, truly sad and upsetting, to be honest. I can't imagine being one of the FixedFloat team members, especially not one of their security personnel. It seems to me that the hackers have identified the platform's security weaknesses, or they might even know about their team members or have an insider who works beside the hackers.
It's hard to understand how two such incidents could happen in a very short period of time. Also the platform going back to work after the first hack should have ensured that no form of hacking could breach them once again no matter its type. However, I doubt they will manage to remain in the market much longer, as everyone is now will be afraid of not being able to get their exchanged assets with them.