Protect the Process - Not Just the Packets | Parasyn

We don't just secure "packets." We understand the PLC logic, SCADA telemetry, and industrial workflows they support — securing the system that controls the real world.

Security controls are engineered specifically for 24/7 operational environments where "rebooting" is not an option. Every change goes through strict OT governance.

Protecting people, assets, and the community by ensuring the Control Mission is never compromised. Physical safety drives every security decision we make.

Local expertise that understands your site's specific safe state. We provide ongoing support aligned to the engineering lifecycle — not a remote SOC with no OT context.

Engineering the blueprint for Zones and Conduits to ensure a defensible network foundation aligned to industrial standards.

Identifying critical process crown jewels and modelling the physical impact of potential cyber-events on operations.

Physical and logical isolation of control environments to reduce the blast radius of any breach across zones and conduits.

Identity-based, encrypted gateways for secure internal and third-party vendor access — without opening the plant to the internet.

Real-time, automated inventory of all field hardware, firmware versions, and serial numbers — continuous visibility across the OT estate.

Monitoring OT protocols (Modbus, DNP3, and more) for irregular behaviour that indicates process tampering or adversarial intrusion.

Security updates managed through strict OT governance to ensure patches never cause process downtime or operational upset.

Site-specific recovery plans engineered to ensure a fast, validated return to production following any cyber incident.

Ongoing sovereign Australian support and performance monitoring to keep security aligned with your engineering lifecycle.

Engineering documentation and technical evidence required for critical infrastructure compliance under Australia's Security of Critical Infrastructure Act 2018. We handle the evidence — you retain the licence to operate.

Critical assets (PLCs, HMIs, SIS) grouped into hardened Zones. A compromise in one area cannot migrate to the Crown Jewels.

Every data flow between zones is a strictly defined, monitored tunnel permitting only verified, necessary operational traffic.

Wrapping older insecure-by-design hardware in a protective digital shell — avoiding premature or costly capital expenditure.

Role-based access control ensuring only authorised personnel and vendors can reach critical control systems.

The global standard for Industrial Automation & Control Systems security. Zones, conduits, and security levels.

International information security management system requirements and best practice framework.

Railway-specific cybersecurity standard for CBTC and ETCS systems. Critical transport infrastructure.

Australia's Security of Critical Infrastructure Act 2018 — compliance for registered critical infrastructure assets.

We apply a continuous Assess → Protect → Monitor → Improve loop. Security patches and configuration changes are managed via strict Engineering Change Control to prevent process upsets.

We don't just scan and pray. We evaluate vulnerabilities against your specific process impact — prioritising remediation of conduits that protect your most critical control logic.

Local Australian expertise that understands your site's specific safe state. We provide the playbook for operational recovery — ensuring the path back to production is fast and validated.