PSG gives every sensor, reader and camera at substations and control centers a trusted device identity and authenticated communications, without replacing what is installed.
Utilities protect their networks with modern cybersecurity. At the fence line of a substation, the picture is often different. Door contacts, motion sensors and fence detection still report over supervised loops designed decades ago. A supervised loop can show that a wire is intact or that a circuit changed. It cannot prove the signal came from the intended sensor.
Many sites are remote and unmanned, and replacing field hardware across a fleet of substations is slow and costly. The work is to make the devices already installed trustworthy: modernization without rip-and-replace.
Who this is for
Physical security directors
NERC CIP compliance leads
Substation engineering and operations
Where PSG sits
PSG is the Embedded Zero Trust Architecture for Physical Security. At a utility it works in two layers: controllers at each site, and operations that act only on verified data.
Universal Field Panel · DESI Controller · Scene Authentication
Purdue 1
OT Edge
Cameras, sensors, readers and door hardware, new or already installed
Purdue 0
PSG embedded
How PSG applies
Authenticate the fence line
The DESI Controller gives fence detection, door contacts and motion sensors a cryptographic identity at the source. The panel accepts a signal only after the device proves it sent it, so a spoofed signal is rejected.
Keep the wiring in place
DESI replaces the end-of-line resistor on existing circuits. Sensors, cable, conduit and door hardware stay where they are. Sites move to Zero Trust input by input, in step with maintenance windows and budget cycles.
Verify every camera feed
Scene Authentication confirms that video from each site is authentic, live and location specific, and raises an alarm if the scene is tampered with. Operators act on video and alarms that carry trust at the source.
Recommended for utilities
DESI Controller
Replaces the end-of-line resistor and gives every analog sensor a cryptographic identity.
Protecting substations? Start with a systems engineer.
Tell us how many sites you run and what is installed. Visit with a PSG systems engineer about what stays, what changes and how Zero Trust reaches each site.
