Cyber Brews - The Operational Technologies Podcast

Cyber Brews - CAF 4 Is Here: What’s New and What’s Changed

Cyber Brews - The Operational Technologies Podcast

Show Notes

Series 2 - Episode 8 CAF 4.0 – What’s Changed Since CAF 3.2?

In this episode of Cyber Brews, we take a closer look at Cyber Assessment Framework (CAF) version 4 and explore how it differs from CAF 3.2. We talk through the key changes, what they mean in practice for organisations operating in ICS and OT environments, and how teams should start thinking about alignment, evidence, and assurance under the updated framework. Whether you’re already working with CAF or preparing for future assessments, this episode helps break down what’s new, what’s evolved, and what really matters moving forward.

So grab a brew and join us as we navigate the latest changes in the CAF landscape.

More from Cyber Brews - The Operational Technologies Podcast

Oct 22, 2026

Series 3 - Episode 7 A step back in time to 11 December 2005. 06:01 in the morning. A series of explosions at the Buncefield oil storage depot near Hemel Hempstead shook the surrounding area. The blast could be heard up to 125 miles away and registered 2.4 on the Richter scale. In this episode of Cyber Brews, we explore the three questions posed by the UK Competent Authority following the Buncefield incident and consider how they can help organisations rethink their approach to cybersecurity: 🔹 Do we understand what can go wrong? 🔹 Do we know what systems are in place to prevent this happening? 🔹 Do we have information to assure ourselves that they are working effectively? These questions may sound straightforward, but they raise some important challenges for organisations responsible for critical infrastructure. We discuss how they apply to OT cyber risk assessments, security controls, organisational accountability and the evidence needed to demonstrate that cybersecurity measures are actually working. Because having firewalls, procedures and security policies in place is one thing. Understanding what could go wrong, knowing whether the right protections exist, and having evidence that they remain effective is another. Whether you're an OT engineer, cybersecurity professional, site owner or process safety specialist, join us as we explore how lessons from Buncefield can help us ask better questions about industrial cybersecurity. ☕ Grab a brew and join the conversation. Are we asking the right questions about OT cyber risk?

Sep 3, 2026

What does a French military fortification from the 1930s have to teach us about OT cybersecurity? Quite a lot, actually.

Jun 1, 2026

Series 3 - Episode 4

Apr 22, 2026

Series 3 - Episode 3! Artificial Intelligence is rapidly becoming part of the industrial cyber landscape but is it strengthening critical infrastructure, or introducing entirely new risks? In this episode we explore the growing relationship between AI and OT security, discussing how organisations are beginning to rely on AI-driven technologies within critical infrastructure environments.

See all episodes →