Startups move fast, sometimes faster than their systems can safely handle. A product may work well on the surface, but still have weak spots in the codebase, cloud setup, user permissions, APIs, or data handling. That is where a proper security audit becomes useful - not as a scary technical ritual, but as a way to catch risks before users, investors, or regulators do.
This article is a list of companies that provide security audit services for startups. Some focus on application security and penetration testing, while others cover cloud security, compliance readiness, infrastructure reviews, or broader cybersecurity consulting. The right fit depends on the product stage, stack, budget, and how much security work has already been done internally.
At Gilzor, we provide security audit services for web and mobile products that need a clearer view of technical risks. Our audits assess application architecture, code security, access controls, data protection practices, and business-critical workflows to identify vulnerabilities, security gaps, and areas that require remediation. The audit process includes technical review, risk assessment, and actionable recommendations to improve the overall security posture of the product.
We work with startups, SMBs, and product studios that need clear technical feedback without turning the audit into a long theoretical report. Since our work also covers business analysis, web and mobile development, QA, consulting, troubleshooting, and support, we can connect security findings with performance, maintainability, release quality, and post-launch stability.
ScienceSoft provides IT security audit services for companies that need to check how well their systems, policies, and technical controls protect the business. For startups, this can be especially important when the product already handles user data, payments, healthcare records, financial workflows, or other sensitive information. ScienceSoft can audit security controls across hardware, software, cloud environments, network infrastructure, access rights, data protection, logging, backups, incident response, and third-party service use.
They work with both targeted and wider security audits, so the scope can be adjusted to the product stage and the actual risk level. ScienceSoft also covers compliance checks connected with standards and regulations such as GDPR, HIPAA, PCI DSS, SOC 2, ISO 27001, and others.
A-listware offers cybersecurity services together with software development, QA, infrastructure, managed IT, and dedicated engineering teams. This gives them a fairly practical audit angle: they can review the product from both the security side and the engineering side.
A-listware supports internal and external IT security audits, penetration testing, security code reviews, and managed security work. Since the company also works with cloud applications, enterprise software, mobile apps, web portals, DevOps, test automation, and information security specialists, its audit services can sit close to the actual development process.
GoNextStage delivers security audit services focused on checking whether company systems, networks, cloud setups, backups, and access policies are actually protected in day-to-day use. GoNextStage looks at security from a practical operations angle, not only from the software layer.
Their audit process covers declarative analysis, documentation review, technical verification, and diagnosis. GoNextStage checks areas such as GDPR, NIS2, SIEM, ISO 27001, ransomware risk, APT risk, IAM, access policies, Active Directory, GPO, EDR, backups, Azure, and system configurations.
Patrowl provides continuous security audit services through an offensive SaaS platform built for exposed internet-facing assets. They help teams identify shadow IT, external assets, data leaks, misconfigurations, and vulnerabilities that may sit outside the usual internal view. For startup teams with fast releases and changing infrastructure, this kind of audit covers more than a one-time scan because Patrowl keeps tracking changes and new exposures after the first check.
Patrowl also connects fixes with ITSM tools such as ServiceNow, Jira, and GLPI, which makes the audit findings easier to move into actual work. Its security checks follow standards such as OWASP, PTES, and OSSTMM, and the platform also supports compliance needs around NIS2, DORA, Cyberscore, and the CaRE program.
WCSS offers service security audits for network services, web applications, and server-side systems. The audit covers both how the service operates and how its code is written, with attention to vulnerabilities, weak spots, unsafe programming patterns, and conflicts with the security policy of the environment.
The WCSS audit combines dynamic testing and static code analysis. When source code is available, they can use a whitebox method to review the application from the inside. When source files are not available, reverse engineering methods such as decompilation and disassembly can be used instead.
OSKI Solutions provides security and compliance services for digital products that need stronger controls around identity, access, data protection, audit logging, and regulatory requirements. Their work covers security gaps in application design, development, cloud setup, and day-to-day operation.
They work with identity tools such as Auth0, Azure AD, AWS IAM, and Okta, and use OAuth 2.0, RBAC, MFA, and SSO for access control. OSKI Solutions also supports vulnerability scanning, penetration testing, SIEM setup, encryption, key management, audit logging, and continuous compliance monitoring.
ValueCoders runs security audits across applications, websites, IT environments, cloud setups, and infrastructure. Their work covers code-level vulnerabilities, runtime issues, API security, authentication, OWASP Top 10 risks, CMS and plugin security, SSL settings, session handling, endpoints, servers, networks, and identity access controls. ValueCoders check both the product layer and the wider setup around it, which is often where small gaps start to pile up.
The company combines automated tools with manual analysis, so the audit is not limited to basic scanner output. ValueCoders also handles compliance and risk assessment for ISO 27001, SOC 2, and PCI DSS readiness, with reports that include risk scoring and remediation guidance.
Software Mind works on security audit and governance services for companies that need to reduce security gaps and strengthen internal controls. Their services cover security audits, breach prevention, cyberthreat analysis, and the implementation of security governance standards.
They also connect security work with its wider software engineering, cloud, DevOps, custom development, AI, and software auditing services. Software Mind can review how security is handled in the software delivery process, not only at the end of development. That includes checking governance standards, technical risks, development practices, and areas where security controls should become part of regular product work.
Itexus carries out technical and security audits for software products, with a strong link to fintech, healthcare, and other regulated digital systems. Their audit work can cover backend, frontend, DevOps, architecture, code quality, performance, maintainability, and penetration testing.
Itexus also works with secure financial software, KYC and AML flows, digital onboarding, banking products, payment systems, and compliance-heavy platforms. Security is usually reviewed together with reliability and product architecture, so the audit can point to both immediate risks and deeper engineering problems.
Solulan handles IT security audits for businesses that need a clear review of their systems, networks, endpoints, applications, and internal security policies. Their audit process starts with scoping, then moves into vulnerability identification, risk analysis, reporting, and remediation support.
Solulan also checks threats that often affect growing startup environments, including weak access control, unpatched software, cloud misconfigurations, phishing exposure, insider risks, ransomware, malware, and possible Dark Web exposure. The company works across Microsoft environments, cloud infrastructure, and hybrid systems, with recommendations tied to the company’s size, industry, and actual setup.
Net Devs builds enterprise software with security and quality checks included in the development process. Their teams are led by senior engineers, and the work covers enterprise development, cloud platforms, AI engineering, modern front-end development, testing, QA, deployment, and ongoing product evolution. Net Devs review how a software product is built, tested, deployed, and maintained across modern stacks such as .NET, JVM, Node, Python, Go, React, Angular, and Vue.
They also work with cloud-native architecture, infrastructure-as-code, and platform engineering across Azure, AWS, and GCP. That makes their audit work suitable for checking application structure, cloud setup, deployment process, automated testing, production readiness, and areas where security or stability may be affected by rushed delivery.
Tequity focuses on cybersecurity services for startups, with security work shaped around the way early-stage teams actually build and release products. Their services can support teams that need to find vulnerabilities, check product security, and understand where the application, infrastructure, or internal setup may be exposed.
Tequity can help with security reviews that look at weak points before they turn into larger technical or compliance problems. The work may cover application security, infrastructure checks, vulnerability discovery, access control, cloud setup, and guidance on what should be fixed first.
21Century.Tech builds AI-augmented software with senior engineers leading architecture, review, testing, and delivery. For security audit services, they review software products from the same engineering angle: code quality, test coverage, documentation, CI/CD setup, deployment readiness, and places where rushed development may have left security gaps.
Startup teams working with 21Century.Tech use this type of audit when they need a product checked before launch, after a fast MVP build, or during a larger refactor. The company works with production software, not just prototypes, so the review can cover whether the code is ready to ship, whether tests support future changes, and whether the product has enough structure to avoid messy fixes later.
DICEUS offers software audit services that cover code quality, architecture, performance, scalability, and security. They work with CTOs, product owners, fast-growing startups, and enterprise teams that need an independent review of a software product before scaling, investment, modernization, or compliance work. Their audits can uncover technical debt, weak architecture decisions, security gaps, and operational risks that are not always visible during everyday development.
DICEUS uses methods such as ATAM to review architecture decisions, tradeoffs, risks, sensitivity points, and quality attributes. Its security audit checks applications and infrastructure for vulnerabilities, misconfigurations, weak access controls, authentication issues, data protection gaps, and secure coding problems. The company also connects security with standards such as ISO 27001, GDPR, and SOC 2, so the audit can support both technical cleanup and compliance preparation.
Cyphere delivers cybersecurity services with a strong focus on penetration testing, security audits, managed security, compliance, and risk management. They audit web applications, APIs, mobile applications, networks, cloud environments, and external attack surfaces. Cyphere checks the parts that usually carry the most risk: login flows, APIs, exposed systems, cloud access, payment-related controls, and sensitive data handling.
The team works with services covering SME cybersecurity, IT security compliance, managed vulnerability scanning, attack surface monitoring, data privacy, and managed security. Cyphere’s audit process follows a simple flow: assess, plan, implement, monitor, then respond and improve. Reports are built to support both technical and non-technical teams, so findings can be turned into fixes without getting stuck in vague security language.
CyberGlobal carries out cybersecurity audits that check systems, controls, vulnerabilities, and compliance gaps. Their process begins with scope and objectives, then moves into control review, documentation checks, interviews, system analysis, and a report with prioritized recommendations.
CyberGlobal also works across related security areas such as penetration testing, SOC services, application security, network security, cloud security, incident response, threat intelligence, and GRC. This gives their audits a wider view of technical and administrative controls.
SoftPro develops custom software, web applications, cloud systems, and AI-based solutions, with a strong focus on Microsoft technologies such as Azure, ASP.NET, .NET Core, and the wider Microsoft stack. SoftPro reviews the software and cloud setup around a startup product, including application structure, access logic, backend behavior, cloud configuration, and places where reliability or data protection may be weak.
Because SoftPro also works with web application development and cloud development, their audit work can stay close to the code and infrastructure. They check whether a web app is secure enough for real users, whether cloud resources are configured properly, and whether the system has enough structure to support further product work.
SICE Seguridad works on security audits and consulting for organizations that need to review protection systems, control measures, procedures, and security technologies. Their audit process looks at risks, threats, vulnerabilities, security protocols, and the measures already in place to protect assets.
SICE Seguridad also supports consulting around security engineering, project methodology, specifications, implementation, inspection, certification, legislation, standards, procedures, maintenance planning, and training. The work is built around a joint review between consultant and customer, with a clear sequence of analysis, problem solving, and proposed changes.
Altius IT performs IT security audits that check the way infrastructure, identity systems, cloud services, endpoints, databases, and operational controls are configured. Their audits are handled by CISA-certified auditors and benchmarked against standards such as CIS, NIST, PCI DSS, SOC 2, GDPR, ISO 27001, and HIPAA.
The process is split into planning, technical assessment, reporting, and remediation guidance. Altius IT reviews server and endpoint hardening, database encryption, access controls, logging, AWS, Azure, GCP, Microsoft 365, Active Directory, SSO, MFA, firewall rules, segmentation, EDR, device encryption, and change management.
Security audits are not only for large companies with mature IT departments. Startups need them too, often earlier than they think. A young product may have clean design, active users, and steady development, but still carry weak access rules, exposed APIs, loose cloud settings, missing logs, or code issues that were left behind during a fast launch.
The right security audit company depends on what the startup needs to check. Some teams need a focused web application or API review. Others need cloud configuration checks, compliance readiness, penetration testing, infrastructure review, or a wider look at internal security controls. A good audit should make the next steps clear: what is risky, what should be fixed first, and what can be improved over time.
For startups, the best fit is usually a company that can keep the audit practical. Long reports are not very helpful if the team cannot turn them into fixes. Clear findings, realistic priorities, and direct remediation guidance matter more than heavy language. Security work does not have to slow the product down. Done well, it simply helps the team build with fewer hidden problems.
