Crypto applications
The idea
A smart contract executes coded rules on a network. DeFi applications can combine contracts, price feeds, governance and interfaces. A code audit can reduce uncertainty about a reviewed version but does not guarantee safety. Permissions granted to contracts may remain active until revoked under the network's rules.
A worked example
Approving a token allowance is a different action from a one-time transfer. The amount and the authorised spender both matter.
Try it yourself
Read a mock approval request and identify the asset, spender and spending limit without connecting a funded wallet.
A mistake to avoid
Assuming an audit badge covers every future upgrade and every integrated service.