9 posts in “ot”
Ransomware and OT: Why Traditional Endpoint Protection Is Not Enough
The playbook that protects office PCs does not transfer to controllers. What ransomware actually does to OT and where the defenses belong.
Logging and Audit Trails for OT Systems: What to Collect and Where to Keep It
OT logging is hard because devices log poorly and clocks drift. A practical baseline that satisfies both engineers and auditors.
Managed vs Unmanaged Industrial Ethernet Switches: Choose by Risk, Not Price
Unmanaged switches are cheaper; managed switches are controllable. When the difference matters - and when it doesn't.
Cybersecurity Hardening for PLCs: Steps That Work Without Breaking Production
Hardening a controller is different from hardening a server. Practical, low-risk measures for PLCs and their networks.
OT Asset Inventory: The Unglamorous First Step to Industrial Security
You cannot protect what you cannot see. How to build and keep an asset inventory that security and maintenance can both use.
USB and Removable Media in Industrial Environments: Real Risk, Practical Policy
A USB stick is still the most common way malware reaches a PLC network. How to control removable media without crippling workflows.
The Purdue Model Explained: Designing IT/OT Network Zones That Actually Work
The Purdue reference model is the backbone of industrial network design. Here is how to map your plant to levels and where the DMZ belongs.
IEC 62443 for Beginners: What the OT Security Standard Actually Requires
IEC 62443 is the reference framework for industrial cybersecurity. Here is a plain-language map of its parts and how to start applying it.
Implementing Zero Trust Networking for OT and Industrial Control Systems
Practical guide to applying zero trust principles to legacy PLCs, HMIs, and SCADA networks without breaking production or requiring hardware replacements.