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David Koerner


Recent Posts

Log4J Cybersecurity Risk Not a Threat to 75F Customers

By David Koerner on Dec 14, 2021 5:24:05 PM

A new 0-day vulnerability called Log4Shell is quickly gaining a reputation as one of the worst cybersecurity threats to have ever emerged. The exploit is found in Apache’s Log4j — a popular Java logging package —and could allow hackers to run malicious software on vulnerable devices or servers, including building management systems. 

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How are Digital Twins used in Building Automation?

By David Koerner on Oct 22, 2021 10:10:33 AM

What is a digital twin? 

Let’s start with a definition: A digital twin is a virtual model of a real-world object or space. It can be a digital replica of an object in the physical world, such as a jet engine or wind farms, or even larger items such as buildings or even whole cities. Within the built environment, a digital twin is a digital or a web-based representation of a physical building, system, or sequence, scaling all the way up to a city or utility grid. A digital twin can represent everything within a building and can offer real-time data about how those assets are performing.  

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Is Retail Dead? Lessons From History on Humans and Working From Home

By David Koerner on Jul 31, 2020 12:03:16 PM

In Meditations, Roman emperor and stoic Marcus Aurelius encourages leaders in times of crisis to rely on their own good judgement, rather than the fears of others. “Never let the future disturb you. You will meet it, if you have to, with the same weapons of reason which today arm you against the present.”

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