Blockchains are here to stay, and they’re being attacked. Why? Because that’s where the money is, literally (have you seen the price of Ethereum lately?). Combine this with Turing complete smart-contracts (often with security flaws) and it becomes obvious why attackers are so interested. The good news is that we’ve done this before, and we can not only learn from the past but we know what the gaps are this time around and we can close them faster. In this session, I’ll cover the real attacks we’re seeing today, and the attacks we can expect to see tomorrow. We’ll also talk about how to prevent them, and what the future (might) bring with respect to Blockchain security.