In that case I'd call the keystone the private central banking system(FED). It is what enables all these high level crimes.
The answer could be cryptos, cryptos are a decentralized trustless electronic currency that undermines the banks control over the creation of currency.
Is the door of all doors crypto currency which will unlock an entirely new financial system?
This is a good point if twitter is compromised the only safe place to tweet might be from a moving target.