RT: Many blockchains are not as secure as they seem.
The blockchain could be effectively controlled by someone if they amass enough tokens and include those in the consensus.
A lone actor once again poses a threat
RT：许多区块链并不像看起来那么安全。
如果他们积累足够的代币并将其纳入共识，则区块链可以被某人有效控制。
独角戏再次构成威胁