Cybersecurity Consulting Firm – Cyber Castellum
We uncover real security flaws in your mobile apps before attackers do. Our assessments simulate adversarial behavior on Android and iOS platforms to identify insecure storage, poor encryption, API flaws, and business logic weaknesses that automated tools often miss.
Modern mobile applications process vast amounts of sensitive data—and attackers know it. At Cyber Castellum, we assess your apps using hands-on techniques that reflect actual attack scenarios. Our team evaluates mobile binaries, API endpoints, data storage routines, encryption schemes, and back-end integrations to reveal critical vulnerabilities. Whether you have internal tools, B2B platforms, or public-facing consumer apps, we help you secure them across every layer.
Our testers reverse engineer mobile applications, manipulate app logic, intercept traffic, and evaluate misconfigurations using proven techniques aligned with the OWASP Mobile Security Testing Guide (MSTG) and MASVS. We target flaws such as insecure storage, data leakage, broken authentication, and weak encryption ensuring your app can withstand real-world threats.
Thorough analysis aligned with OWASP M1–M10, including insecure data storage and reverse engineering risks.
We test your API endpoints for improper access controls, injection points, and excessive data exposure.
We intercept and inspect data transmission to ensure encryption protocols are properly implemented.
Monitor app execution to detect hidden functionalities, improper session handling, or privilege escalation.
Detect sensitive data stored in insecure local databases, files, logs, or unprotected device areas.
Analyze application code and binaries to find embedded credentials or API keys attackers could exploit.
Younus and his team at Cyber Castellum have a thorough knowledge of CMS requirements and cyber security. Cyber Castellum is our preferred provider when it comes to 3rd party external audits, web application security assessments, as well as internal and external penetration testing. Our company offers Direct Enrollment through the healthcare.gov marketplace. To be a part of this elite group, we follow strict CMS requirements to ensure our web application is safe and secure. In a world where cyber security is of utmost concern, Cyber Castellum has proven from the start that they have what it takes to ensure we remain CMS-compliant year-to-year.
I have been a security testing consultant for twenty years and I have l partnered with Cyber Castellum on multiple security testing engagements. They are knowledgeable, responsive, and they never fail to exceed expectations. Their thorough approach and deep expertise make them a trusted partner I can rely on for the most complex assessments. I highly recommend their services to anyone seeking top-tier cybersecurity testing.
Cyber Castellum has consistently delivered exceptional offensive security, penetration testing, and vulnerability scanning services for Cybertlabs and our government clients. Their ability to identify and communicate risks and vulnerabilities has exceeded our customers’ expectations, providing both depth and clarity. We rely on them not only for their technical excellence, but also for their dependability, integrity, and outstanding customer service. They are a trusted partner in pursuing and delivering our cybersecurity portfolio of work.
Let us help you test it like a real attacker would—so you can fix vulnerabilities before they impact your users, your compliance, or your reputation.
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