Welcome to The Hardened Layer
I’m Dmitry Sevostiyanov, an experienced cybersecurity professional with a strong background in protecting organizations from digital threats. I currently support critical aerospace and defense systems at a leading global manufacturer, where I focus on resilience, Zero Trust, and hardened identity practices.
This site is where I share insights on building secure and reliable systems through a mix of engineering discipline and modern cybersecurity strategies. My interests cover a broad range of topics, including:
- Zero Trust security architecture — ensuring every access request is continuously verified.
- Resilience and fault tolerance — designing systems that withstand and recover from disruption.
- Micro-segmentation and layered defense — limiting attack impact through smarter architecture.
- Multi-Factor Authentication (MFA) and strong identity hardening — strengthening the human perimeter.
- IoT and OT security — protecting connected devices and critical infrastructure.
- Next Generation Firewalls — advanced controls for modern network environments.
- Monitoring, detection, and threat hunting — identifying and responding to adversaries in real time.
- Incident response and resilience planning — preparing organizations to withstand and recover from attacks.
- Vulnerability and attack surface management — reducing exposure through proactive defense.
Through The Hardened Layer, I aim to make complex security concepts accessible while offering practical guidance for professionals, leaders, and decision-makers who want to strengthen security without compromising reliability.
