Through this process, the expert auditors find possible weaknesses, thus making the protocol more resistant to external attacks. And, of course, the auditors use the best tools to boost confidence in the protocol's security.
For instance, automated code analyzers are one of the tools to apply. They usually use standard methods to scan for vulnerabilities in conventional terms. A popular tool in this area is
Slither, a static analysis framework for smart contracts, which can detect common vulnerabilities that can endanger the system.
But technology keeps advancing, and the boundaries of what is possible keep shifting. AI (Artificial Intelligence) and ML (Machine Learning) techniques in auditing are becoming more popular because they can handle and examine vast amounts of data with a speed and accuracy that humans can hardly match.