Aaron R. Warner

Aaron R. Warner is the founder and CEO of ProCircular, an information Security and Privacy firm focusing on midsized businesses. A former CIO and CTO of Integrated DNA Technology, he’s spent more than two decades working in IT and InfoSec. Mr. Warner is a Certified Information Systems Security Professional (CISSP) and certified Securiity+ engineer, and a full member of the FBI/DHS Infragard partnership. Mr. Warner has earned an MBA from the Tippie School at the University of Iowa, and enjoys cave diving, playing music, a good bottle of wine and above all time with his family.
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Recent Posts

AI-Native Security Starts With the Basics You Already Know

Posted by Aaron R. Warner on Jul 24, 2026, 3:19:05 PM

Fahmida Y. Rashid wrote a 20-year retrospective for Dark Reading (May 2026). If you sit on a board or approve security budgets, it's the clearest explanation I've seen in a long time of how we got here.

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Russia's FSB is scanning routers this week - Get faster than the bear.

Posted by Aaron R. Warner on Jul 14, 2026, 3:23:54 PM

If you run security for a hospital system, a bank, a college, or a manufacturer, a new government advisory deserves ten minutes this week.

On July 13, NSA, CISA, FBI, and DC3, joined by partners across the Five Eyes and Europe, released "Improve Router Hygiene to Protect Against Russian State-Sponsored Targeting" (AA26-194A). It documents a decade-plus campaign by Russia's FSB Center 16 against networking devices. The sectors it names as most at risk are financial services, healthcare and public health, energy, communications, the defense industrial base, and government, especially at the state and local levels.

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Topics: Vulnerabilities, Penetration Testing, Monitoring & Detection, Security Advisory

Monitoring the Canvas Incident

Posted by Aaron R. Warner on May 7, 2026, 8:08:22 PM

Many of you have seen the headlines about the breach at Instructure, the company behind the Canvas learning management system used by 41% of higher education institutions in North America and thousands of K-12 districts. Here's what's known, and what your institution should be doing about it.

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Topics: Incident Response, Ransomware, Compliance & Governance, AI & Emerging Technology

Shadow AI: The Risk Your Security Tools Can’t See

Posted by Aaron R. Warner on May 7, 2026, 7:45:00 AM

What shadow AI really looks like inside a normal workday

Shadow AI is any AI tool, feature, or integration your organization uses without clear approval, security review, or monitoring, but it still touches real business data. It’s the AI sidebar in your CRM, the browser extension a manager added, or an “assist” feature turned on by a vendor.

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Topics: Hospitals & Health Care Systems, Compliance & Governance, AI & Emerging Technology

Mythos & Glasswing are complicated and new. Jim is going to help us understand...

Posted by Aaron R. Warner on Apr 19, 2026, 11:41:39 AM

Two weeks ago, Anthropic announced that its newest AI model was too dangerous to release to the public. The Claude Mythos Preview reportedly found critical software vulnerabilities, including some that had gone undetected for over twenty years. In response, Anthropic launched Project Glasswing, a $100 million coalition that includes Apple, Microsoft, Google, AWS, JPMorgan Chase, CrowdStrike, the Linux Foundation, and about fifty other major industry players. Their goal is to find and fix the most serious issues before attackers do. That was the main story.

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Topics: Penetration Testing, AI & Emerging Technology

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ProCircular is a Full-Service Information Security Firm

We are passionate about helping businesses navigate the complex world of information security, and our blog is another great source of inforamtion. We can assist you no matter where you are in your security maturity journey:

  • Breached or hit with ransomware?
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  • Looking to confirm your security with a third party?

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