Security Code Review
Manual and automated source code review to identify vulnerabilities, authentication flaws, data exposure risks and business logic issues.
- 41async findByCustomer(id, status) {
- 42 const sql = `SELECT * FROM invoices
- 43 WHERE customer_id = ${id}
- 44 AND status = '${status}'`;
- 45 return db.query(sql);
Suggested fix
- − WHERE customer_id = ${id}
- − AND status = '${status}'`;
- + WHERE customer_id = $1 AND status = $2`;
- − return db.query(sql);
- + return db.query(sql, [id, status]);
A review focused on real vulnerabilities
The goal of the review is to identify exploitable risks in the source code before they reach production.
- Expert review
- Analysis focused on security and real-world vulnerabilities.
- Manual + SAST
- A combination of automated analysis and manual validation.
- Multiple technologies
- Coverage across a range of modern stacks.
- Technical reports
- Clear evidence and actionable remediation guidance.
Review coverage
- 01Expert manual review
- 02Complementary SAST analysis
- 03Authentication & Authorization review
- 04Exposed secrets analysis
- 05Dependency security review
- 06Input handling validation
- 07Business logic analysis
- 08Detailed technical report
What you receive at the end
Documentation you can use to decide, to fix and to evidence the assessment.
- Technical report with evidence
- Each finding with the affected code excerpt, severity, impact and technical context.
- Prioritized recommendations
- Fixes ordered by risk and described in the context of your stack.
- Executive report
- Risk explained in business terms, so leadership can decide and prioritize.
- Retest of fixes
- Validation of the applied fixes, when included in the contracted scope.
Review methodology
The review combines automated tooling with expert manual validation to identify real risks.
- 01
Initial analysis
Understanding the application's architecture, stack and flows.
- 02
SAST & dependencies
Complementary automated analysis for initial risk identification.
- 03
Manual review
Expert analysis of the source code and critical flows.
- 04
Impact validation
Hands-on assessment of how vulnerabilities can be exploited and their impact.
- 05
Technical report
Technical documentation and remediation guidance.
Most common risks found in source code
Critical vulnerabilities frequently arise in authentication, authorization, input handling and business logic.
- SQL Injection
- Unsafe queries, parameter concatenation and missing prepared statements.
- Hardcoded Secrets
- Credentials, tokens and sensitive keys exposed in code or repositories.
- Broken Access Control
- Authorization flaws that allow unauthorized access to features and data.
- Insecure Cryptography
- Misuse of cryptographic algorithms, weak keys or insecure implementations.
- Dependency Risks
- Vulnerable libraries, outdated dependencies and insecure components.
- Business Logic Flaws
- Flaws in application flow and exploitable business rules.
Technologies and security scope
Coverage across a range of modern stacks.
Languages
- JavaScript / TypeScript
- Python
- Java
- C# / .NET
- PHP
- Go
- Ruby
- Kotlin
Frameworks
- Node.js
- Spring Boot
- Django
- FastAPI
- ASP.NET
- Laravel
- React
- Angular
Security scope
- OWASP Top 10
- Authentication
- Authorization
- Cryptography
- Secure Coding
- Dependency Security
- Input Validation
- Business Logic
Why does your code need a security review?
Many application security flaws originate in the source code. A security code review finds critical bugs, backdoors, hardcoded credentials and logic flaws before the code reaches production, while fixing them still costs less.
Our code review combines automated static analysis (SAST) with expert manual review to find vulnerabilities that scanners miss.
Risks the assessment helps you avoid
- Vulnerabilities in production
- SQL injection, XSS and other exploitable flaws
- Exposed credentials
- API keys, passwords and secrets hardcoded in the source
- Vulnerable libraries
- Dependencies with known CVEs that go unnoticed
- Security technical debt
- Code smells and anti-patterns that turn into critical flaws
How does our Code Review work?
A hybrid methodology: automated tooling + expert manual analysis:
- 01
Automated static analysis (SAST)
1-2 days
A full scan of the code with specialized tooling:
SonarQube, Semgrep, Snyk, Checkmarx, GitGuardian
- Source code analysis across all major languages
- Identification of OWASP Top 10 vulnerabilities
- Detection of hardcoded secrets (API keys, passwords)
- Dependency analysis (SCA - Software Composition Analysis)
- Verification of compliance with secure coding standards
- 02
Expert manual review
3-5 days
Human analysis of business logic and context:
Manual review by an offensive security specialist
- Business logic flaws (validation bypasses)
- Race conditions and concurrency issues
- Authorization and access control flaws
- Analysis of sensitive data flows
- Security code smells and anti-patterns
- 03
Validation and prioritization
1-2 days
Confirming vulnerabilities and analyzing their impact:
Validation in a test environment whenever possible
- Elimination of false positives
- Severity classification (CVSS 3.1)
- Analysis of real-world exploitability
- Prioritization by business risk
- PoC (proof of concept) for critical findings
- 04
Report and remediation
1-2 days
Actionable documentation for developers:
Answers to your team's questions about the findings
- Technical report with the vulnerable code snippets
- Specific remediation recommendations
- Secure code examples (before/after)
- Integration with issue trackers (Jira, GitHub Issues)
- Presentation meeting and Q&A with the dev team
Indicative durations; each project's schedule is set in the proposal, according to the scope.
Investment: how is a Code Review priced?
The investment depends on the size and complexity of the codebase:
| Size | Typical scope | Estimated timeline |
|---|---|---|
| Small Project | Up to 10k lines of code | 3-5 days |
| Medium Project | 10k-50k lines of code | 5-10 days |
| Large Project | 50k-200k lines of code | 10-20 days |
| Enterprise/Monolith | 200k+ lines of code | 20-40 days |
Estimated timelines; each project's schedule is set in the proposal, based on scope.
Factors that influence pricing:
- Number of lines of code (LOC)
- Number of languages and frameworks
- Code complexity (microservices, monolith)
- Whether infrastructure as code (IaC) review is needed
- Urgency and desired SLA
Why request a quote from us?
- Pricing based on a clear scope (LOC + complexity)
- Preliminary scope analysis with no commitment
- Detailed proposal with an execution timeline
- CI/CD integration for continuous reviews
- Terms for recurring reviews set out in the proposal
Finding and fixing vulnerabilities while still in code usually costs far less than fixing them in production after an incident.
Frequently asked questions
Is the code review fully manual?
The review combines SAST tools with expert manual analysis. The manual portion is essential for uncovering logic flaws, authentication and authorization issues, and risks that automated scanners typically miss.
Do you review applications still in development?
Yes. Code review can be performed on applications under development as well as on systems already in production.
Do we need to provide access to the repository?
Preferably yes, but we can also work with exported code, isolated environments or temporary access.
Does the report include technical recommendations?
Yes. The report includes evidence, impact, technical context and practical remediation recommendations.
What is the difference between a code review and a pentest?
A code review analyzes the source code (white-box) to find vulnerabilities before deployment. A pentest tests the running application (black/gray-box) the way an external attacker would. Ideally, do both: code review during development and a pentest before releases.
Which languages do you review?
JavaScript/TypeScript, Python, Java, C#/.NET, PHP, Ruby, Go, C/C++, Swift, Kotlin and others, including frameworks such as React, Angular, Vue, Spring, Django and Laravel.
Do you analyze dependencies and libraries as well?
Yes. We run SCA (Software Composition Analysis) to identify libraries with known CVEs and problematic licenses, and recommend safe upgrades.
Do you integrate with our CI/CD?
Yes, when included in the scope. We can set up automated SAST in your pipeline (GitHub Actions, GitLab CI, Jenkins, CircleCI), useful for continuous review on every commit or PR.
Do you fix the code as well?
We provide detailed recommendations and examples of corrected code. If you prefer, we also offer pair programming with your team as an add-on service to implement critical fixes.
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Need a security review of your code?
Get in touch to discuss the review scope, the technologies involved and the technical requirements of your project.
Sending this form neither starts any testing nor authorizes it: testing begins only after the scope is defined and authorized in writing.
- [email protected]
- Phone
- +55 (15) 99745-2589
- Chat on WhatsApp
- Hours
- Monday to Friday, 9am to 6pm
- Confidentiality
- NDA before any sensitive information