The Security Industry
Richard StiennonAll things cyber security. Researching 3,753+ vendors.
| Platform |  | Pricing | Only free issues | Publishes | Twice weekly |
|---|---|---|---|---|---|
| Issues | 129 | Subscribers | Read | stiennon.substack.com |
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Latest Issues
Recent posts by this newsletter. Browse the email archive.
Is there a System of Record in Cyber?
As you know I have taken on the role of cybersecurity historian for our industry. (See Security Yearbook 2024). There are many reasons for loss of shared memory. Among them are the old guard retiring or moving on. John Thomson who led Syman...
Mind-blowing Product Data
Sometimes I have to step away from a product I use all day everyday to express my wonder at what we have built. It all started with the years of work capturing security vendors and data about them like headcount (every two weeks), investmen...
You Should Write a Book
Most of this article was originally published on Peerlyst which is now gone. Because I often get questions on writing and publishing, and because I am spending the weekend planning the writing of Security Yearbook 2025 (Wiley, 2025), I thou...
The Fast Fifty Under 50
By now you will have noticed that we launched a project to track the fastest growing cybersecurity companies with more than 50 employees and less than 500. (See Announcing the IT-Harvest Cyber 150.) That is great, but what about the smaller...
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