Source code security audit performs white-box analysis on application source code. Working with automated tools and manual review, security engineers locate security defects such as injection, privilege escalation and hard-coded sensitive information together with their root causes at the code-path level, helping development teams eliminate risk at the lowest cost during development.

Why Source Code Audit

Black-box testing can only reach paths that are reachable at runtime, whereas white-box audit covers every code branch, finds deep defects that black-box methods struggle to trigger before launch, and points directly to the root cause. For business systems with high security requirements, for checks before components are released externally and for the security verification step in certification applications, code audit is a standard measure.

Audit Scope

• Web and backend business system source code (Java, PHP, Python, Go and others)
• Mobile application source code (Android, iOS)
• C/C++ source code and embedded software
• SDKs, component libraries and third-party dependencies (checks for known vulnerable components)
• Build scripts and deployment configuration

Service Process

1. Architecture review — understand the business logic, technology stack and code structure, and define the audit focus.

2. Tool-assisted screening — run automated code analysis tools for a full initial screening.

3. Manual deep review — manually review critical areas such as authentication, sessions, authorization, input handling and cryptography usage.

4. Verification and rating — build verification scenarios for suspected issues to confirm exploitability, and assign risk ratings.

5. Reporting and fix support — deliver the audit report with root-cause explanations, and support the development team through fixing and verification.

Deliverables

• Code audit report — defect list, risk ratings, code locations and root-cause analysis
• Fix recommendations — remediation approaches given by code path
• Verification conclusion — review after fixes are complete, supporting risk closure

Why Choose Star River Quality

• Accredited qualifications — CMA and CNAS accredited, with a traceable audit process and results
• Rigorous methodology — covers OWASP Top 10 and common CWE defect types, combining manual review with tooling
• One-stop coordination — can be combined with penetration testing and vulnerability scanning for complementary white-box and black-box coverage
• Developer-friendly — reports give development teams an executable remediation path

If your business systems, mobile apps or embedded software need pre-launch code audit or remediation support, contact us for an audit plan and recommendations.