This guide explains what crypto security involves, how keys and wallets work, the controls businesses use to protect on-chain operations, and the threats that a security program should account for.

The crypto ecosystem is the financial infrastructure behind digital assets. It connects blockchains, wallets, exchanges, stablecoins, smart contracts, and service providers into one system for moving and programming value online. 

Decentralised finance (DeFi) is a system of financial services that runs on public blockchains instead of through banks and regulated intermediaries.

This article walks through what on-chain and off-chain transactions are, how they work, where each one is the right fit, and what businesses should think about before picking a side.