MicroSec Protection Suite is a security platform designed for IoT and OT devices, including microcontrollers, sensors, and resource-constrained edge devices. The platform centers around LCMS (Lifecycle Certificate Management System), which provides PKI and certificate management capabilities for distributing post-quantum safe certificates to millions of devices. The suite addresses physical limitations of IoT devices by requiring 500x less memory, operating 40x more energy efficiently, and using certificates that are 20x smaller than traditional solutions. It supports zero trust architecture through device identity management and certificate-based authentication. Key capabilities include firmware over-the-air (FOTA) updates with cryptographic verification, supply chain security through authorized signer validation, and device configuration management via MicroAgents. The platform manages Certificate Authorities (CAs), certificates, and cryptographic keys across servers and embedded devices. MicroAgents provide all-in-one protection and monitoring software that can be deployed on resource-constrained devices including microcontrollers and bare metal IoT devices. The platform is protocol-agnostic and supports both greenfield and brownfield network deployments. The solution targets industrial IoT and OT systems across maritime, manufacturing, smart cities, connected buildings, and critical infrastructure sectors. It provides host firewall management, package management, and security configuration capabilities for connected devices.