Israeli cybersecurity firm Ironblocks is launching a new Web3 security layer called Venn to address the hacking problem in decentralized finance (DeFi). Venn is a transaction pre-screening network that aims to create a new economy for crypto security. The network plans to match security operators and their technical expertise with DeFi apps that require additional transaction flow monitoring. Auditors and cybersecurity firms who vet pending transactions may receive crypto rewards from participating DeFi apps.