Blockchain security auditing enables cybersecurity professionals to thoroughly analyze the set of code deployed on it. So what exactly is a Blockchain security audit and how do you assess blockchain security, Let’s find out by reading the article below.
What is a blockchain security audit?
Blockchain security auditing is a security technology that supports high-value transactions on the blockchain. The process involves using sophisticated code analysis to identify any vulnerabilities in the system and eliminate any vulnerabilities in those applications.
A blockchain audit is an excellent tool for evaluating a company's operations and ensuring records are as accurate as possible. While information from external sources is often trustworthy, human error can still affect recorded transactions.
Unlike traditional databases, blockchains are immutable and therefore handle data with great accuracy. The role of blockchain auditors is to mitigate the risks associated with the accuracy of digital assets.
Using a blockchain as a transaction database sounds like a good idea, but there are risks to consider when implementing the technology. The most significant risk is compromised access to private keys, which breaks encryption.
Security controls should be in place to protect private keys, but the effectiveness of these measures depends on the implementation and consistency of the procedures. Automated analysis of smart contracts can reduce the cost and complexity of smart contract audits.
How do you assess blockchain security?
A blockchain code audit is a systematic and structured code review of a manually performed blockchain development project. The process usually involves heavy use of static code analysis tools. But the primary responsibility for auditing lies with expert security professionals and blockchain developers reviewing code to find bugs. Let us look at the various steps involved in the blockchain auditing process.
1. Define the goals of the target system
A misdirected blockchain security audit is worse than no audit at all. It leads to confusion, consumes time and ends without any solid results. To avoid getting caught in the directionless loop of a blockchain security audit, always define your audit objectives before starting the process.
The broad goal of security audits, blockchain or otherwise, is to identify security risks in systems, networks and technology stacks. You can also narrow this goal down to several smaller goals related to different security areas and your specific needs. Also define the action plan that should follow the security audit. Pre-defined goals and action plans will prevent you, the auditor, from getting bogged down in the audit and keep your assessment on track until the end.
2. Identify the components and associated data flows of the target system
The second step is to identify the components and related data flows of the target system. Additionally, the audit team needs to understand the project, its architecture and use cases. Review of test plans and test cases is also necessary to perform a successful audit.
When you do a smart contract audit in the blockchain, you first need to lock the source code version. This ensures transparency in the audit process. What's more, this step also helps you distinguish the already reviewed version from any new changes you've made to the code. But it is important to record the version number.
3. Identify Potential Security Risks
Blockchain applications have nodes and APIs that communicate over private and public networks. Nodes and their respective roles can be distinguished in the solution as they are the communicating entities in the blockchain network. Organizations should consider reviewing risks as implementations and risks continue to evolve. Some potential security risks in blockchain are related to data, transactions, etc.
4. Threat Modeling: Blockchain Security Audit
Threat modeling is an integral part of a blockchain security assessment. Threat modeling makes it easier to identify potential system security issues. To be precise, threat modeling can detect data spoofing and data tampering. More importantly, it can also identify denial-of-service attacks on blockchain systems. As an integral part of a blockchain security audit, this step also identifies data manipulation.
5. Development and fixes
The final step in the blockchain security audit process is – Exploitation and Remediation. Exploitation of the vulnerabilities found in the steps above reveals the severity of the risk. Basically, exploit is determining how easy it is to exploit a vulnerability and how it manifests on the system. However, remediation deals with patching these vulnerabilities.
I hope this article will help you to learn what exactly is a Blockchain security audit and how do you assess blockchain security. Ideally, security audits should be conducted at least annually to ensure that defense mechanisms are up to date against the latest threats.
