Security issues cause billions of dollars in losses each year and are a serious long-term threat to the DeFi ecosystem.

BlockSec successfully blocked and intercepted 2 of the attack transactions, helping the project to recover about 3,500 WBNB.

Revest Finance, a staking DeFi project on Ethereum, was hacked and lost about $2 million.

Since the operation has ended, we were able to review the entire process and share relevant experiences and experiences with the community.

This article brings you the contract interpretation of Sputnik_DAOv2::Factory Contract.

Why use DAOs?

A fundamental problem in program maintenance is that bug fixes always introduce new bugs with a (20-50)% chance.

This article will specifically introduce the related issues of authority control in Rust smart contracts from the following two perspectives.

Unlike Solidity, a common smart contract programming language, the Rust language natively supports floating-point arithmetic.

Denial of service attack, also known as DoS (Denial of Service) attack, this type of attack will make the smart contract unable to be used by users normally for a period of time (even permanently).

Rust contract security re-entry attack.

Contract-safe integer overflow.

Contract deployment, function calling, and explorer usage.

Write Rust smart contract unit test cases.

In addition to providing audit services, BlockSec also hopes to give more support to the community from the perspective of security development.