Source Code Security Analysis

Find vulnerabilities
before they ever
reach production

Expert manual code review that catches what static analysis tools miss — logic flaws, authentication weaknesses, and security anti-patterns buried deep in your codebase.

Request a Code Review How we work

15+

Languages supported

More findings than SAST alone

10x

Cheaper to fix in code than post-deploy

AuthController.java Reviewing

1public User authenticate(String user, String pass) {
2  String sql = "SELECT * FROM users WHERE "Critical
3    + "username='" + user + "'";
4  return db.query(sql).first();
5}
6
7private static final String SECRET = "prod-jwt-s3cr3t";High
8
9public String generateToken(User u) {
10  .setExpiration(null) // TODO: add expiryHigh
11  .compact();
12}

CriticalSQL injection via string concatenation — full authentication bypass possible

HighHardcoded JWT secret exposed in version control

HighTokens issued with no expiry — stolen tokens valid indefinitely

Overview

Security that starts at the source

Penetration testing finds vulnerabilities in deployed software. Secure code review finds them before they ship — when they're cheapest to fix, before they're exposed to the internet, and before an attacker can find them first.

Our code reviews go far beyond automated SAST tools. Static analysis catches syntax-level patterns. Human experts catch logic flaws — authentication bypasses, broken access control, race conditions, and insecure design decisions that only make sense when you understand what the code is actually trying to do.

Every review is conducted by senior application security engineers with hands-on offensive experience. We read your code the way an attacker would — looking for exploitable weaknesses, not just guideline violations.

More findings vs automated SAST tools alone

10x

Cheaper to fix in code than post-deployment

100%

Remediation retest included at no extra cost

Every engagement includes

Full-scope source code
security assessment

Manual expert review

Senior engineers read your code with an attacker's mindset — not just running scanners

SAST tool augmentation

Automated scanning as a baseline, triaged and validated — no false positive noise

Architecture & design review

Security review of data flows, trust boundaries, and authentication patterns

Dependency & supply chain audit

Third-party libraries checked for CVEs, abandoned packages, and suspicious permissions

Secure fix examples included

Every finding includes the vulnerable snippet and a concrete corrected code example

Free remediation retest

We verify every fix in the codebase before issuing the final report and attestation

Language Coverage

Your stack, reviewed by people who know it

We assign reviewers based on deep expertise in your specific language and framework — not generic checklists.

JavaScript / TypeScript

Node.js, React, Next.js — prototype pollution, XSS sinks, and async auth flaws

Python

Django, Flask, FastAPI — SSTI, deserialization, and ORM injection patterns

Java / Kotlin

Spring Boot — XXE, deserialization, SSRF, and Java cryptography misuse

Goroutine races, insecure crypto, SQL injection, path traversal

Ruby

Rails — mass assignment, unsafe redirects, IDOR, gem auditing

.NET / C#

ASP.NET Core — OIDC misconfigs, Razor injection, viewstate attacks

PHP

Laravel, WordPress — LFI, RCE via deserialization, file upload flaws

Swift / Obj-C

iOS — keychain misuse, insecure URL schemes, ATS bypass

What We Find

Vulnerabilities that scanners miss

Automated tools catch known patterns. Our engineers catch vulnerabilities that require understanding your application's logic, context, and intent.

Authentication & Session Flaws

Broken login logic, insecure password resets, session fixation, JWT vulnerabilities, and OAuth implementation errors that automated tools can't reason about.

Access Control & IDOR

Missing authorization checks, insecure direct object references, privilege escalation paths, and horizontal access control failures.

Injection Vulnerabilities

SQL, NoSQL, LDAP, command, and template injection. We trace user-controlled input through every execution path including chained and indirect flows.

Cryptographic Weaknesses

Weak or custom ciphers, improper IV reuse, insecure random number generation, hardcoded keys, and password hashing with MD5 or SHA-1.

Business Logic Flaws

Race conditions, price manipulation, workflow bypass, and application-specific logic errors that only surface when someone understands the intended business rules.

Supply Chain & Dependency Risk

Known CVEs in third-party packages, abandoned or typosquatted libraries, overly permissive access, and malicious code in pulled dependencies.

Methodology

How we approach every review

We combine automated scanning with deep manual analysis — tools handle the low-hanging fruit, freeing our engineers to focus on the complex logic and design-level vulnerabilities only humans can catch.

Scoping & Onboarding

We agree on scope — full codebase, specific modules, or a pre-release feature. Secure repo access established and threat model discussion completed.

Automated Baseline

SAST tools and dependency scanners run first. All results triaged and validated before reaching our engineers — no false-positive dumps in the final report.

Manual Deep Review

Senior engineers trace data flows, audit auth and authorization logic, review crypto implementations, and probe business logic for exploitable weaknesses.

Report, Fix & Retest

Findings delivered with vulnerable code snippets and secure fix examples. Once remediated, we verify every fix and issue a final clean report and attestation letter.

When to Use It

The right time for a code review

Secure code review adds the most value at key moments in your development lifecycle — before risk is shipped, not after.

Pre-launch security validation

Before shipping a major product or feature — when fixes are still cheap and no users are at risk.

Compliance requirements

PCI-DSS, SOC 2, and ISO 27001 require or strongly recommend code-level security review as part of a secure SDLC.

Third-party or acquired code

Integrating a library, acquiring a company, or inheriting legacy code? Know exactly what security debt comes with it.

Post-incident remediation

After a breach or pentest finding, confirm the root cause is fully fixed and identify related weaknesses in the same codebase.

What you receive

Full findings report with vulnerable code snippets and CVSS scores

Secure code fix examples for every finding — not just descriptions

Executive summary for leadership and compliance evidence

Prioritized remediation roadmap — severity and effort weighted

Dependency audit with CVE references and upgrade paths

Architecture and design recommendations where applicable

Retest report confirming all findings resolved in codebase

Letter of attestation for auditors, partners, or clients

Why Radical Security

The Radical difference

Secure code review is only as good as the engineers doing it. Our reviewers are offensive security practitioners who find vulnerabilities for a living — not compliance analysts running checklists.

Offensive mindset

We approach your code as an attacker would — tracing data flows, probing logic boundaries, and looking for what the code does wrong, not just what best practices it misses.

Language specialists

We assign reviewers with deep expertise in your specific stack. Python flaws look different from Java flaws — you get engineers who know your language's pitfalls intimately.

Fix-ready reports

Every finding includes the vulnerable lines, a clear explanation of why it's exploitable, and a concrete secure code example. Developers can act on the report the same day they read it.

No false-positive noise

We validate every automated finding before it enters the report. No 200-item scanner dumps — just real, confirmed, exploitable vulnerabilities with clear business context.

Find vulnerabilities
before they ever
reach production

Security that starts at the source

Your stack, reviewed by people who know it

Vulnerabilities that scanners miss

How we approach every review

The right time for a code review

The Radical difference

Ready to review your codebase?

Related services

Find vulnerabilitiesbefore they everreach production

Security that starts at the source

Your stack, reviewed by people who know it

Vulnerabilities that scanners miss

How we approach every review

The right time for a code review

The Radical difference

Ready to review your codebase?

Related services

Find vulnerabilities
before they ever
reach production