Securitybulls Application Security is a penetration testing service that focuses on identifying exploitable vulnerabilities in applications through manual security assessments. The service is delivered by OSCP/OSCE certified security engineers who conduct exhaustive manual testing to identify hundreds of vulnerabilities, including business logic flaws that automated scanners typically miss. The service covers multiple application security domains including mobile application security testing for both iOS and Android platforms, secure code review to identify vulnerabilities in source code, API security testing to detect SQL injection, cross-site scripting, and privilege escalation attacks, threat modeling using frameworks like Microsoft Threat Modeling Framework and STRIDE model, and architecture review services to identify security vulnerabilities in system design. The testing approach combines automated and manual methodologies to simulate real-world attacks. Mobile application testing uses a blended approach with automated tests covering common vulnerabilities and manual tests tailored to specific applications. Code review services examine source code for security weaknesses and quality issues. API penetration testing assesses authentication and authorization mechanisms along with common attack vectors. The service aims to help organizations protect customer data, maintain reputation, comply with industry regulations in healthcare and finance, and identify security gaps before malicious actors can exploit them.