Security guide

What Is a Smart Contract Audit?

A technical guide to smart contract audits, what auditors review, what clients receive, and how audits reduce blockchain protocol risk.

What an audit reviews

A smart contract audit reviews source code, protocol behavior, deployment assumptions, privileged roles, tests, and the ways external actors can interact with the system. The goal is to identify vulnerabilities before assets are exposed to production risk.

What can go wrong

Common failures include missing access control, reentrancy, incorrect accounting, stale oracle data, unsafe upgrade paths, signature replay, cross-chain message validation errors, and business-logic mistakes that automated scanners cannot reason about.

What clients receive

A useful audit report identifies the exact scope, affected code, severity, impact, remediation guidance, and verification status. It should help engineers fix issues and help stakeholders understand the remaining risk.

Where to start

Teams should prepare a frozen commit, architecture notes, deployment scripts, tests, known assumptions, and any areas where the team wants extra review. A focused scope creates a faster and more accurate audit.

An example of a useful finding

For a withdrawal issue, a report should identify the affected contract and function, the conditions required to reach the problem, the impact on balances, and a way to reproduce it. After remediation, the verification result should identify the new commit. A severity label without this evidence is much less useful to the engineers responsible for fixing the code.

What an audit does not prove

A report does not guarantee that a protocol cannot be exploited. Check whether the reviewed version matches the deployment and whether upgrades, infrastructure, signing procedures, and integrations were included. The word audited is not a substitute for reading the scope. Teams should plan monitoring, incident response, and review of subsequent changes alongside the code assessment.

Discuss Your Audit Scope

Start with your email and a short project description. Technical details can follow. Request a smart contract audit quote or review public CTDSEC audit examples.

Get a smart contract audit quote

Tell us what you are building and the security questions your team needs answered. We can clarify the scope together.

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