Few questions in industrial cybersecurity generate as much confusion as the classification of programmable logic controllers (PLCs) under the EU Cyber Resilience Act (Regulation (EU) 2024/2847). Ask ten engineers, compliance leads, or notified-body consultants…
This is a subject and problem that often comes up when discussing SIS and especially with legacy systems. Given today’s modern instrumentation and the improvements in reliability, some people argue that there’s no need…
We all know the simple paperclip. It’s just a piece of wire bent in strategic places, yet it's brilliant at keeping pages together. How often has that little clip saved my skin when a…
Written By: Mike Medoff, Co-chair of JT 62443-4-1
The clock is ticking for manufacturers selling products with digital elements into the European Union. By December 2027, compliance with the Cyber Resilience…
I've worked in automotive all my life. I had the lucky chance to work for a large Tier 1 supplier of test and engineering services that happened to also act as the project manager…
Have you ever heard people say, “I’ve met the PFDavg target, so I’ve met my SIL target?” It’s true that in low demand we need to meet the PFDavg (or PFH for High/Continuous mode)…
Under the EU Cyber Resilience Act (CRA), product classification drives the compliance path—including the depth of required evidence and whether conformity can be supplier-led or requires third-party involvement. This post explains why programmable…
As the cybersecurity landscape continually evolves, engineers here at exida are working with organizations looking to achieve and maintain cybersecurity compliance. Tools like exSILentia® Cyber help end users comply with the standards and improve…
When designing a Safety Instrumented Function (SIF), practitioners often encounter a complex scenario: multiple initiating events (independent causes) leading to the same hazardous consequence. While common industry practice is to design for the "worst-case"…
How often have you been at conferences where the presenters refer to the “Swiss Cheese Model”? The intent of the model is to convey what happens to the protection layers in Safety Instrumented Systems…
Oftentimes when this comes up during class it’s clear that there’s a misunderstanding as to how these three variables can impact the PFDavg calculations. Mission Time is defined as the period of time over…
Looking for a way to manage and maintain your operation and maintenance data, but don’t know where to start? Are you already using exSILentia® for your safety lifecycle task needs?
If so, SILstat™ offers…
While using different safety system management platforms, it is essential to keep system and device data properly arranged between platforms to ensure efficient data management. This can be difficult, but not with SILstat™.…
This is a question I’ve been asked many times, with some stating that as long as the PFDavg (or PFH) meets the target SIL then that’s fine. Whereas this statement is partially true, it…
In today’s world, having your Operation and Maintenance (O&M) data in a digital format allows for increased accessibility and traceability. Using more traditional recordings, such as on paper or with various Excel notebooks, increases…