The decentralised finance (DeFi) market is booming—but the world’s best hackers are on a constant look-out for ways to steal your crypto tokens.North Korea, which recently committed the largest theft in cryptocurrency history (https://www.chainalysis.com/blog/preventing-crypto-hacks-best-practices-for-exchanges-hexagate/), is probably top of the hackers’ game. What do crypto users need to know about the risks in this unregulated but fast-growing market?In the latest episode of Unseen Money from New Money Review, Timur Yunusov and Paul Amery are joined by Arseny Reutov, chief technology officer at Decurity, a security audit and ethical hacking firm specialising in DeFi.During the podcast, we discuss:* Malware, ethereum and the recent $1.5bn Bybit hack* State-of-the-art techniques in DeFi hacks* Mixers, cross-chain bridges and the laundering of stolen funds* How North Korea became the world leader in crypto hacks* Ways of detecting flaws in DeFi smart contracts* Who audits DeFi?* Incentives to report, rather than exploit smart contract flaws* Is DeFi security improving?