Web application security testing
Behind every front end lies your biggest blind spot.
Customer data, API keys, authentication logic, business-critical workflows. It’s all sitting behind your web application.
Automated scanners skim the surface. We go after what they miss.
THE PROBLEM
Scanners skim. Attackers dig.
Most organizations run automated scanning against their web applications and call it tested. Automated tools are useful; they’re fast, consistent, and good at catching what’s already documented. But they don’t think. They don’t chain vulnerabilities together. They don’t probe business logic, abuse authentication flows, or understand what happens when you combine a low-severity misconfiguration with an API endpoint nobody thought to check.
Real attackers do. That’s the gap between a scan and a proper web application test, and it’s where the most damaging vulnerabilities live.
What we test
Web applications
Full-scope application testing across authentication, session management, input validation, access controls, and the logic that holds your application together under real attack conditions.
APIs
REST, GraphQL, and SOAP APIs – testing authorization enforcement, rate limiting, data exposure, and the endpoints your application exposes that your scanners never reach.
Authentication & authorization
Broken access control remains one of the most consistently exploited vulnerability classes. We test every pathway: login flows, session tokens, privilege escalation, and the gaps between roles.
Business logic flaws
The vulnerabilities unique to your application — the ones no scanner has a signature for. Price manipulation, workflow bypass, and the logic your developers didn’t anticipate an attacker abusing.
Mobile application backends
The server-side components your mobile applications depend on — APIs, authentication services, and data endpoints tested from the perspective of a compromised or manipulated client.
Third-party integrations
The attack surface your application inherits from every integration it touches. OAuth flows, webhook configurations, and the trust relationships your application extends to external services.
Manual, adversarial and focused on what matters.
Our web application testing is led by human expertise.
We use scanners as a starting point, not a finish line – combining them with manual testing, adversarial thinking, and the contextual understanding of your application that no tool can replicate.
01 Reconnaissance & Mapping
Understanding your application from the outside: endpoints, authentication mechanisms, technology stack, and the attack surface before any active testing begins.
02 Vulnerability discovery
Active testing across the OWASP Top 10 and beyond. Injection, broken access control, misconfiguration, cryptographic failures, and the application-specific logic flaws scanners can’t find.
03 EXPLOITation & CHAINING
Proving impact. Where vulnerabilities exist, we exploit them, and where multiple low-severity issues can be chained into a high-impact attack path, we demonstrate exactly how.
04 Findings via the portal
Real-time findings as we discover them — not a PDF three weeks later. Direct access to your CovertSwarm team to validate fixes and retest throughout the engagement.
WHAT WE FIND
The vulnerabilities your last test missed.
The most impactful findings in web application testing are rarely the loudest ones. They’re the business logic issues, the chained low-severities, and the API endpoints that were never meant to be public.
“Clean scan results gave us false confidence. CovertSwarm showed us exactly what that confidence was costing us.”
CTO (SaaS platform)
Tested to the standard your regulators expect.
Delivered by CREST-accredited specialists and aligned to the frameworks your board, insurers, and regulators recognize.
CREST accredited | OWASP Top 10 | OWASP API Security Top 10 | OWASP WSTG | PTES | PCI DSS
Your application is live. So are the attackers targeting it.
Talk to our web application specialists about testing what automated scanners miss – manually, adversarially, and continuously.