https://techcrunch.com/2020/02/18/defiance-billion-dollar-finance-million-dollar-hacks-and-very-little-value/

Over the last year or so, much-to-most of the cryptocurrency world has pivoted from the failure of “fat tokens” and ICOs, and the faltering growth of “Layer 2” payments like Lightning and the late Plasma Network, to the new hotness known as “DeFi,” which this week was used to … hack? acquire? steal? It’s pretty ambiguous … a cool million dollars.

DeFi stands for Decentralized Finance. It’s supposed to be an entire alternative financial system. One day, its visionaries say, you will be able to use DeFi to borrow and lend, to buy and sell all kinds of exotic securities, and to acquire insurance and make claims, all via completely decentralized networks and protocols, no banks or brokers or trusted third parties required, just irrevocable and implacable software, “code as law,” with no human beings involved except for you and (maybe) your counterparties, while never having to fill out any paperwork or apply for permissions, and trusting your money to no entity except whoever holds your private key(s). One day.