How could they do that?! It's really a shocking news for everyone for it might happen in our country but i think it's the best time to put awareness for each and everyone of us, not only in the companies with secured building but also those people who has virtual wallet.
It is not much different from other robberies taking place. Just that the thieves have become advanced and have knowledge about the latest advancements happenings on the society. This can only be prevented by having proper security in those places. If there was a similar incident in my country, I am sure that the thieves would have left everything untouched as they have no idea of bitcoins or crypto. Individual investors should also learn from this and never disclose their income or current holding in public.