Source Code Review Providers
Source code review (also known as secure code review or code audit) is a systematic examination of an application's source code to identify security vulnerabilities, coding errors, and deviations from secure coding practices. Manual code review by experienced security engineers is combined with static application security testing (SAST) tools to analyse code for vulnerabilities including injection flaws, authentication weaknesses, cryptographic errors, insecure data handling, race conditions, and logic flaws.
Code review covers multiple programming languages and frameworks, examining both custom code and the use of third-party libraries and dependencies. This white-box approach finds vulnerabilities that black-box testing cannot detect, such as backdoors, insecure cryptographic implementations, and subtle logic errors.
Source code review is particularly valuable during the software development lifecycle (SDLC) as it allows vulnerabilities to be identified and fixed early, when remediation costs are lowest. It is recommended by compliance frameworks including PCI DSS, SOC 2, and NIST, and is essential for organisations developing security-critical applications, financial systems, healthcare platforms, and government software.
Aardwolf Security
Boutique UK penetration testing consultancy in Milton Keynes specialising in manual, expert-led security assessments across web applications, APIs, cloud, and mobile platforms.
Bishop Fox
Premier US-based offensive security firm known for elite penetration testers, cutting-edge research, and the Cosmos continuous attack surface management platform.
Blaze Information Security
CREST-accredited boutique pen testing firm with offices across Europe and Brazil, serving 200+ organisations in 25 countries.
Cure53
Berlin-based specialists in web security, browser security, and cryptographic auditing, trusted by the world's leading VPN providers and privacy tools.
IOActive
Elite boutique security consultancy specializing in IoT, SCADA/ICS, embedded systems, and hardware security research with world-renowned researchers.
MDSec
Elite UK offensive security consultancy specialising in CBEST/STAR/TIBER red teaming, advanced adversary simulation, and CREST-accredited penetration testing for FTSE 100 clients.
NCC Group
Global cybersecurity consultancy with CREST, CHECK, and CBEST accreditation, renowned for deep technical research and comprehensive penetration testing services.
Netragard
Top 10-ranked US pen testing firm with proprietary Real Time Dynamic Testing methodology. Three-tier service model from standard to maximum-depth custom testing.
Packetlabs
Canada's most reviewed cybersecurity company. CREST-certified, SOC 2 Type II-attested pen testing from Toronto.
Pen Test Partners
The UK's largest independent security testing firm, renowned for IoT/OT research, CBEST red teaming, and CHECK/CREST-accredited penetration testing across all sectors.
Praetorian
Offensive security firm founded by former DoD professionals, offering elite penetration testing and the Chariot continuous attack surface management platform.
RedSecLabs
CREST-certified and PCI QSA penetration testing consultancy in London, delivering offensive security and compliance services across 25+ countries with research-driven expertise.
Salus Cyber
Award-winning Cheltenham-based cybersecurity consultancy with NCSC CHECK Green Light status and CREST approval, specialising in defence, government, and critical national infrastructure security.
SEC Consult
Leading European cybersecurity consultancy from Vienna with a prolific vulnerability research program and deep expertise in IoT and embedded systems security.
SECFORCE
Leading UK offensive security consultancy based in Canary Wharf, delivering CREST-accredited penetration testing and adversary simulation to organisations with the most demanding security requirements.
Securing (SecuRing)
Poland's longest-running independent pen testing firm with 50+ consultants. Specialises in application security, cloud testing, and red teaming.
Shielder
Independent Italian offensive security firm specialising in web, mobile, network, and embedded security assessments with a strong research focus.
Trail of Bits
Elite security research firm specializing in source code review, blockchain auditing, and building industry-standard open-source security tools.
Source Code Review FAQs
What programming languages can be reviewed?+
Professional code reviewers typically cover Java, C#, Python, JavaScript/TypeScript, Go, Ruby, PHP, C/C++, Swift, Kotlin, and other common languages. Specialist reviewers may cover embedded systems languages and proprietary platforms.
How is source code review different from automated SAST?+
Automated SAST tools find common patterns but produce false positives and miss complex logic flaws. Manual review by experienced engineers finds subtle vulnerabilities, validates automated findings, and assesses overall code quality.
How long does a source code review take?+
Duration depends on codebase size, complexity, and languages used. A focused review of critical components typically takes 5-15 days. Full application reviews of large codebases may take several weeks.