About ISS
Core Differentiation
Our unique approach to Trust Lifecycle Management (TLM) delivers continuous, unified security from the physical edge to enterprise and AI-scale systems.
Physical Edge High Ground
An embedded-first security posture, protecting where threats originate — at the chip, controller, and connected device level.
End-to-End Lifecycle Enforcement
Complete trust coverage from chip → device → system → enterprise → AI, unifying every stage of the digital lifecycle.
Mission-Critical Pedigree
Built on defense-grade assurance and proven certification, trusted in safety- and mission-critical environments worldwide.
PQC-Ready Future-Proofing
Post-quantum cryptography built-in, ensuring resilience against tomorrow’s computational and AI-driven threat landscape.
Adaptive Defense
Dynamic protection across the full attack surface, orchestrated by intelligent trust policies that evolve as systems change.
Compliance-First Design
Audit-ready by architecture - aligned with FDA, DoD, UNECE WP.29/R155-R156, NIS2, ISO 21434, and emerging TrustIQ mandates.
Long-Lifecycle Survivability
Infrastructure engineered for 30–50-year programs, sustaining trust continuity across evolving technologies, vendors, and generations.
Our Interactive Timeline From GHS → ISS → iO
Four decades of innovation in safety-critical and security-critical systems, culminating in the revolutionary Trust Lifecycle Management platform.
Green Hills Software Founded
The birthplace of iO. Green Hills became the global leader in safety-critical RTOS, trusted across aerospace, automotive, medical, and industrial systems.”
INTEGRITY-178B RTOS Launched
The only RTOS ever to achieve EAL6+ Common Criteria — the world’s highest security assurance for safety-critical software.
100+ Flight-Critical Wins
Flight-certified pedigree: avionics, satellites, and defense comms for leading aerospace and defense players.
ISS (Integrity Security Services) Formed
Green Hills incubated ISS to extend from RTOS to device lifecycle trust: SCMS, OTA provisioning, PKI, and certificate management.”
Pioneering Device Lifecycle Management (DLM)
Defined the lifecycle security category: provisioning, OTA integrity, revocation, long-lifecycle resilience before ‘IoT’ was a buzzword.
Firsts in Automotive & Infrastructure
First SCMS for production V2X deployments, first Misbehavior Authority for revocation, first OTA signing infrastructure — securing transportation lifecycles.
Billions of Devices Secured
Protecting billions of devices and endpoints across automotive, aerospace, medical, and industrial markets — far beyond cert-only vendors.
Launch of IntegrityOne (iO)
The category-defining TLM platform. From silicon to AI, iO secures the full trust lifecycle and sets the global standard for Trust Lifecycle Management.
Core Values
PRIDE
We believe in our mission. We wear our values on our sleeve.
DEVOTION
We respect, support, and listen. We are a team, we are family.
PASSION
We aim for greatness in every detail and have fun doing it.
DEDICATION
Our customers’ success is personal. Their brand is our brand.
