Topic
Cybersecurity
3 guides across the knowledge base.
ReferenceCybersecurityWater
Water and Wastewater Utility Threat Landscape
What has actually happened at water utilities, what those incidents had in common, and the small number of controls that would have prevented most of them.
8 min readUpdated Aug 28, 2026
ReferenceCybersecurityOT
OT Security vs IT Security
Why the familiar security priorities invert on a plant floor, and what that changes about patching, scanning, authentication, and incident response.
8 min readUpdated Aug 26, 2026
ReferenceCybersecurityArchitecture
The Purdue Model
The reference architecture most segmentation designs still start from: what each level contains, where the DMZ goes, and how it maps to a water utility.
8 min readUpdated Aug 20, 2026
Other topics
- PLC
- Wastewater
- Instrumentation
- Analog
- Design
- How-To
- Pumps
- Troubleshooting
- 4-20 mA
- Communications
- Control
- Fundamentals
- Modbus
- Panels
- Programming
- SCADA
- Controls
- Ethernet
- Level
- Lift Stations
- Noise
- OT
- Scaling
- Serial
- Signals
- Standards
- Water
- Alarms
- Architecture
- Flow
- Grounding
- HMI
- ICS
- Industrial Networks
- Interlocks
- ISA-101
- ISA-18.2
- Ladder Logic
- Networking
- PID
- Power
- Radar
- Scan Time
- Segmentation
- UL 508A
- Utilities
Direct contact
Have a controls question?
Reach Eric Sullivan directly about anything on this site, a controls or automation topic, or one of his personal projects.