Cybersecurity Consulting Firm – Cyber Castellum

Our Services

Application Security Services

Modern applications are at the heart of business operations and a primary target for cyberattacks. Our expert-led Application Security Services provide strategic consulting to strengthen your security posture across every stage of the Software Development Lifecycle (SDLC).

Development to Deployment

Application Security Consulting

Cyber threats are evolving faster than traditional application security approaches. Delayed testing or reactive fixes leave critical gaps that attackers exploit. We help organizations embed security into their development pipelines enabling early detection, mitigation, and compliance without slowing innovation.

Our consulting team specializes in designing “shift-left” security strategies and implementing robust practices like threat modeling, secure code reviews, and DevSecOps integration. Whether you are modernizing legacy applications or securing cloud-native platforms, we deliver actionable insights that reduce risks and operational costs.

OUR TRUE WORDS

Build secure applications. Protect your users. Preserve your reputation.

With Cyber Castellum, you gain access to industry-leading expertise in application security:

  • Identify flaws during development to minimize costly post-release fixes.
  • Integrate security into agile and DevOps workflows without disrupting productivity.
  • Ensure applications align with standards like OWASP, NIST, PCI-DSS, and HIPAA.
  • Customized strategies for web apps, APIs, mobile apps, and complex software ecosystems.
FEATURES

What’s Included in Our Application Security Services

Shift-Left Security Integration

Embed security early in the SDLC to reduce risks and costs.

Threat Modeling & Risk Analysis

Proactively assess application architectures to identify potential attack vectors.

Secure Code Review Consulting

Expert analysis of source code to uncover vulnerabilities and recommend fixes.

DevSecOps Advisory Services

Align security with CI/CD pipelines to enable rapid and secure deployments.

Compliance Alignment

Prepare applications to meet industry regulations and pass audits confidently.

Third-Party Application Risk Assessments

Evaluate and secure applications built by vendors or external teams.

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.

Mary Mohl

Project Manager Insurica

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.

Sean Murray

Principal Consultant supporting New York State Agencies

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.

Khurram Chaudry

CEO Cybert Labs

Shape

Start Securing Your Applications Today

Schedule a complimentary consultation with our experts to assess your application security needs and get actionable guidance no cost, no obligation.

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