Athena Cyber Defense LLC is an independent specialized advisory practice led by Priyendu Subashchandran, CSSLP. Available engagements include software architecture reviews, threat modeling, regulatory gap assessments, and DoD Authority to Operate (ATO) readiness for medical device and complex distributed systems.
Technical Leadership for High-Stakes Environments.
Available advisory engagements translate DoD RMF expectations into engineering requirements, security-control mappings, and prioritized documentation gaps for medical diagnostic and health IT platforms.
Scoped architecture reviews and threat-modeling engagements assess trust boundaries, data flows, and shared failure modes, with practical mitigation recommendations for multi-tier hardware/software platforms.
Available gap assessments examine alignment with FDA premarket cybersecurity expectations, medical-device risk management, and software lifecycle standards, producing actionable engineering and documentation recommendations.
Available architecture reviews assess real-time operating systems, multi-node clinical networks, track robotics, and distributed services against defined availability, fault-isolation, and recovery requirements.
Available assessments apply Continuous Threat Exposure Management (CTEM) principles to medical-device product security: define scope, review exposure evidence, prioritize risk, plan validation, and organize remediation. Recommendations account for clinical context and ISO 14971 risk-management processes.
Priyendu is a hands-on Principal Software Architect and Engineering Leader with more than 22 years of professional experience in medical technology. His background includes over 22 years with Siemens Healthineers and its predecessor organizations, architecting and securing complex medical platforms.
His career spans architecting real-time embedded systems and RTOS software for the global Artis zee interventional angiography systems at modality headquarters in Forchheim, Germany, to serving as the principal architecture and technical authority for the flagship Atellica laboratory diagnostics platform in the United States. At Siemens, he authored the series-level Product Security Architecture (PSA), led exposure-management activities including build-time SBOM generation, reachability analysis, and vulnerability intelligence, and directed DoD ATO lifecycle work. His background includes global technical leadership and engineering alignment with FDA cybersecurity expectations. He brings this prior professional experience to Athena's available advisory services.
Discuss a scoped architecture review, threat model, regulatory gap assessment, exposure-management review, or DoD ATO readiness engagement directly with Priyendu. Scope, deliverables, and availability are agreed before work begins.
