Your scanner reports 400 issues. Which ten actually matter, and what did it miss entirely? That gap is the difference between SAST and a secure code review.
Who it’s for
Engineering leads deciding how to test their code
You’ll learn
- · What SAST tools do
- · What human review adds
- · When to use each
Reading time
7 min read
Why this matters to your business
Choosing only one leaves gaps: tools miss logic problems, and people cannot read every line on every commit. Knowing the difference helps you spend your security budget well.
SAST in one minute
Static Application Security Testing (SAST) tools such as Semgrep, CodeQL or SonarQube read your source code without running it and flag patterns that often lead to vulnerabilities — unsafe database queries, hard-coded secrets, risky functions.
They are fast, cheap to run on every commit, and good at catching the same mistake wherever it appears.
What a secure code review adds
In a secure code review, an experienced reviewer reads the code that matters most — login, payments, permissions, file handling — with the business rules in mind. They confirm which tool findings are real, remove false alarms, and find issues tools cannot see, such as a missing ownership check or a flawed approval flow.
Which one do you need?
Use SAST continuously in your build pipeline to catch common mistakes early. Add a secure code review before major releases, for high-risk features, or when a customer or auditor asks for evidence. Together they cover both breadth and depth, and a penetration test then confirms what is exploitable in the running app.
What to prepare for a review
Read-only access to the repository, a short walkthrough of the architecture, and a list of the features you are most worried about. The reviewer focuses there first, so the time goes where the risk is.
Key takeaways
- SAST gives breadth on every commit.
- Human review gives depth where it matters.
- Most teams need both, plus a pentest.
Jargon buster
- SAST
- Static Application Security Testing — automated scanning of source code.
- False positive
- A reported issue that turns out not to be a real problem.
- CI pipeline
- The automated steps that build and test code on every change.
What you should do
- Run SAST in your build pipeline
- Triage findings instead of ignoring them
- Book a review before major releases
- Focus reviews on login, payments and permissions
What our team does
- Run and tune SAST tools for your stack
- Review high-risk code by hand
- Remove false positives from the results
- Explain fixes at the line of code
- Agree the high-risk areas with you before starting
- Deliver findings with file, line and fix guidance
Have code going to production soon? We can review the parts that handle money, logins and permissions.
— The CRIS InfoTech security team