Many Coins (Blockchain) got hacked recently, 51% attack included.
Yesterday, we had a bad news from Syscoin & Binance. #SYS price was pumping so fast before #Binance went down for "maintainence" - I think Binance also got hacked. That is too bad.
I think because the defense of certain coins is at a minimum. You do not need a lot of money to make an attack 51%. This only says that the market is still very weak and not ready for the arrival of big money.