Home Services About Blog Contact
Service 09

SECURE CODE
REVIEW

Security vulnerabilities live in code. We read your code - manually, by a specialist - and find the issues that automated scanners, code linters, and CI/CD pipelines were never designed to catch.

HUMAN EYES ON YOUR CODE

A secure code review is a systematic security analysis of your source code, performed by security engineers with deep expertise in application security and the specific language or framework in use. It combines targeted static analysis tooling with hands-on manual review - focusing on the areas where automated tools produce the most false negatives: authentication logic, cryptographic implementations, business logic, access control enforcement, and third-party dependency risk.

The output is not a scanner report reformatted as a PDF. It is a specific, line-referenced, expert-written assessment of real security issues in your actual codebase - with remediation guidance that your developers can act on in the next sprint.

Authentication & Session Logic
Manual review of authentication flows, session token generation, password hashing implementations, remember-me functionality, and all credential handling - the code paths that automated tools routinely misclassify.
Cryptographic Implementation Review
Assessment of all cryptographic code - algorithm selection, key generation, key storage, IV handling, padding mode usage, and custom implementations that should not exist.
Access Control & Authorisation
Tracing of access control enforcement throughout the codebase - identifying missing checks, misapplied decorators, server-side enforcement gaps, and role validation bypasses.
Input Handling & Injection Prevention
Review of all input handling code - parameterised query usage, output encoding, deserialization, file upload handling, and path traversal prevention across the entire codebase.
Dependency & Supply Chain Audit
Complete inventory and security assessment of all third-party dependencies - version analysis, known CVE identification, transitive dependency risks, and dependency confusion attack vectors.
Business Logic & Design Review
Analysis of application-specific logic for security flaws that only make sense in the context of the product - race conditions, state machine abuse, and trust boundary violations.

WHAT SCANNERS CAN'T SEE

SAST tools are excellent at finding known insecure function calls, missing sanitisation, and common patterns that map cleanly to a rule. They are poor at understanding intent, context, and the specific security implications of a design decision. A scanner will not tell you that your JWT validation function has an algorithm confusion vulnerability. It will not tell you that your multi-step checkout flow can be abused to transfer ownership of another user's order. It will not tell you that your password reset token has 32 bits of entropy instead of 128.

A CyberKartel secure code review catches what scanners miss - because our reviewers understand attacker mindset, application security principles, and the specific language and framework patterns that create exploitable vulnerabilities in production applications.

HOW WE REVIEW

01
Scope & Architecture Understanding
We begin by understanding the application's architecture, technology stack, security-sensitive components, and existing controls - to ensure our review effort is focused on the highest-risk areas.
02
Automated Analysis Pass
Targeted SAST tooling run against the codebase to identify known vulnerability patterns, dependency risks, and configuration issues. Results are triaged and false positives removed before manual review begins.
03
Manual Expert Review
Security engineer manually reviews all security-sensitive code paths - authentication, authorisation, cryptography, input handling, and business logic - tracing data flows and identifying vulnerabilities that require human understanding.
04
Dependency & Supply Chain Analysis
Complete dependency graph analysis - identifying outdated packages, known CVEs, unmaintained libraries, and supply chain integrity risks across direct and transitive dependencies.
05
Reporting & Developer Handover
Line-referenced findings with code snippets, clear explanations of the vulnerability, proof of exploitability where applicable, and developer-friendly remediation guidance - specific to your codebase, not generic advice.
06
Exploitation Confirmation
Critical findings are verified for exploitability before the report is finalised - confirming that identified vulnerabilities are genuinely reachable and exploitable in your specific codebase, not theoretical flags from pattern matching. Every critical and high finding in the report has been confirmed, not assumed.

DELIVERABLES & OUTCOMES

Executive Summary
High-level risk assessment covering security posture, critical findings, and priority actions - written for leadership stakeholders who need the business impact, not the code.
Full Technical Report
Line-referenced findings with code evidence, CVSS scores, business impact, and remediation guidance - written for the developers who will fix each issue.
Dependency Security Inventory
Complete list of all identified third-party components with version details, associated CVEs, severity ratings, and upgrade recommendations.
Secure Coding Guidance
Language and framework-specific secure coding recommendations to prevent the same class of issues from recurring in future development.
Developer Debrief
Working session with your development team to walk through findings, answer questions, clarify remediation approaches, and discuss secure patterns to adopt going forward.
Retest Pass
Once your team has resolved the findings, we retest every fixed vulnerability to confirm the remediation is complete, correctly implemented, and hasn't introduced new issues - so you ship with confidence, not assumption.

Find the vulnerabilities in your code before attackers do.

Start with a free 30-minute call. We'll understand your codebase, your technology stack, and your concerns - then scope a review that gives your team specific, actionable findings they can fix immediately.

Talk to Our Team