Chicago · Fractional & Interim CIO / CTO / CISO · Adjunct Professor, DePaul University

# Cybersecurity, AI & technology executive. Writer, speaker, and *teacher*.

Thirty years leading technology, security, and data-resilience programs — and writing about what actually works. This site is my notebook and my classroom: essays since 2008, and curated resources for students and practitioners.

[Read the writing](https://briangreenberg.net/writing/) [Browse the resources](https://briangreenberg.net/resources/) [Work with me](https://briangreenberg.net/fractional-cio-cto/)

(image: Brian Greenberg)

Latest writing

## The three most recent essays

[All 59 essays →](https://briangreenberg.net/writing/)

2026 AI

### [Your AI Is Learning From Someone. Make Sure It’s Your Best Engineer](https://briangreenberg.net/2026/08/07/your-ai-is-learning-from-someone-make-sure-its-your-best-engineer/)

AI coding assistants amplify whatever engineering judgment surrounds them. How leaders encode the habits of their best engineers into instructions, checks and verification.

2026 AI

### [Default-On AI: Are SaaS Vendors Outsourcing Their Risk To You?](https://briangreenberg.net/2026/07/30/default-on-ai-are-saas-vendors-outsourcing-their-risk-to-you/)

SaaS vendors keep switching AI features on by default, with days of notice - shifting consent, retention and governance risk onto the customers who inherit them.

2026 AI

### [A Claude Code Skill to help you write better code.](https://briangreenberg.net/2026/06/30/a-claude-code-skill-to-help-you-write-better-code/)

Introducing senior-engineering-partner, a free open-source Claude Code skill that reviews, tests, and hardens your code like a strict senior engineer.

For students & practitioners

## The resource library

Ten curated guides I maintain for my students at DePaul and for peers building security programs — tools I trust, standards worth reading, training worth paying for.

[Browse all ten →](https://briangreenberg.net/resources/)

### [Tools](https://briangreenberg.net/resources/)

Vetted security & privacy tooling — what I actually install, and why.

### [Standards & Controls](https://briangreenberg.net/resources/)

NIST, CIS, ISO — the frameworks that matter and how they fit together.

### [Training](https://briangreenberg.net/resources/)

Where to learn this trade — courses, certs, and labs ranked by value.

Speaking & media

## Talks, press, and publications

[Speaking & Media page →](https://briangreenberg.net/media/)

### [Speaking](https://briangreenberg.net/media/)

Talks on AI in the enterprise, cybersecurity leadership, and systems thinking in IT — grounded in thirty years across Fortune 100s, startups, and academia.

### [Press & Forbes](https://briangreenberg.net/media/)

Forbes Technology Council member — a dozen published articles and expert panels, on one page journalists can actually use.

### [Books](https://briangreenberg.net/media/)

Two books in progress: *Cybersecurity for Non-Technical Leaders* and *IT Operations: A Field Guide*.

Organizations I've led, advised, taught, or been published by — hover to pause.

(image: ZiffDavis) (image: Roosevelt University) (image: OVEC) (image: Solomon Partners) (image: Swiss Colony) (image: TechTarget) (image: Washington Mutual) (image: Total Attorneys) (image: Weyerhaeuser) (image: DePaul) (image: Fortium Partners) (image: 4Discovery) (image: American Dental Association) (image: Akrete) (image: Beyond Indigo) (image: Bloomberg) (image: Capital One) (image: Citadel) (image: CITE World) (image: Corsearch) (image: Deft) (image: Dell) (image: Deutsche Bank) (image: EcoMyths Alliance) (image: Literacy Rescue) (image: EMC) (image: Ends+Stems) (image: Financial Communications Society) (image: Fujitsu) (image: General System Dynamics) (image: GlassHouse) (image: Global Delivery Report) (image: Grange) (image: Harper College) (image: Huffington Post) (image: IBM) (image: InfoSec Institute) (image: ITWorld) (image: JFK Health System) (image: Koch Industries) (image: LiftBrands) (image: Loyola) (image: Microsoft) (image: Motorola) (image: n2h2) (image: Processor) (image: SpiceWorks) (image: StorageNetworks) (image: RHR International)

## Let's talk.

I'm available for [fractional and interim CIO, CTO, and CISO engagements](https://briangreenberg.net/fractional-cio-cto/) through Fortium Partners. Beyond that — speaking, press, guest lectures, or a spirited argument about backups — my door is open.

[Contact →](https://briangreenberg.net/contact/)

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Source: https://briangreenberg.net/