curiousecurity

Enterprise architecture and security governance, from the board seat

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Defense-in-Depth Isn’t Five Overlapping Tools

September 18, 2026 by Ryan Horst

selective focus photography of 14' grey Garvin metal pipe wrench

Walk the tool inventory of most mid-size security programs and you'll find three products doing signature and behavioral detection on the endpoint, two doing it again on the network, and nobody who can tell you, without a meeting, whether a given vulnerability class is actually covered end to end. That's not defense-in-depth. That's five vendors billing for the same job. Defense-in-depth got named for a reason: depth. Layers. The idea was never "buy more of the same control so a failure is less … [Read more...]

Filed Under: Architecture Tagged With: cybersecurity, enterprise-architecture

NIST CSF 2.0’s Govern Function Makes Architecture Governance an Audited Control, Not a Best Practice

September 10, 2026 by Ryan Horst

a black sign with a price tag on it

A framework doesn't usually gain a new function just to hand you a new checkbox. NIST CSF 2.0's Govern function is the exception, and I don't think most architecture teams have reckoned with why yet. When NIST published CSF 2.0 in February 2024, Govern didn't get tacked onto Identify as an afterthought. It became its own standalone function, defined as the work to "establish and monitor organization risk management strategy, expectations, and policy," and it carries six categories: … [Read more...]

Filed Under: Architecture Tagged With: cybersecurity, enterprise-architecture

Secure by Design vs. Secure by Default: They’re Not the Same Control

September 2, 2026 by Ryan Horst

red padlock on black computer keyboard

CISA's Secure by Design pledge started small, 68 software manufacturers signed on in May 2024. By CISA's count in June 2026, that list had grown to 367 signers, and the agency used its August 10, 2026 announcement to spotlight fresh commitments from leading technology providers. Good news, worth tracking. But buried in the pledge itself is a distinction I keep seeing vendor evaluations flatten into one question. Two of the pledge's seven goals are about what ships turned on: no default … [Read more...]

Filed Under: Architecture Tagged With: cybersecurity, enterprise-architecture

I Bought a Short-Term Rental Sight Unseen. Here’s What Actually Happened.

August 31, 2026 by Ryan Horst

a close up of a camera on a tripod

Buying a house you've never set foot in is either bold or stupid, and in March of 2025 I found out which one applies to me. It was a short-term rental play in Bradenton on the Florida Gulf Coast, a decent bones house in a good pocket near the water, and I bought it off photos and a video walkthrough because the numbers on paper looked right and I didn't want to lose it to someone who could move faster. Jumping on it fast was still the right decision, but doing it "sight unseen" came with some … [Read more...]

Filed Under: Architecture Tagged With: cybersecurity, enterprise-architecture

Vendor Risk Assessment Belongs in Architecture Review, Not Just Procurement

August 27, 2026 by Ryan Horst

Blue blocks spelling risk next to a magnifying glass.

Forty-eight percent of breaches in 2026 involved a third party, according to Verizon's Data Breach Investigations Report. A year earlier that number was 30 percent. That's roughly a 60 percent jump in twelve months, and if your organization's vendor risk process still lives entirely inside procurement, that trend line isn't someone else's problem to solve. It's yours. Here's the pattern, and I'd bet money it isn't unique to any one company. Procurement runs the RFP, scores vendors on price and … [Read more...]

Filed Under: Architecture Tagged With: cybersecurity, enterprise-architecture

Best of Breed Is Usually the Wrong Call: The Integration Bill Comes Due Later

August 20, 2026 by Ryan Horst

brown short coated dog on green grass field

Best-of-breed is a procurement decision wearing an architecture costume. It gets treated like the rigorous choice, because somebody ran a bake-off, scored the features against a checklist, and picked the tool that came out on top, and that feels like diligence. It isn't, not fully. Feature depth was never the whole question, it was just the question that was easy to score. The real question is what it costs to connect that tool, secure it, and carry it for the next five years, and that number … [Read more...]

Filed Under: Architecture Tagged With: cybersecurity, enterprise-architecture

Architecture Governance Only Works When the Loop Closes

August 12, 2026 by Ryan Horst

Governance programs don't usually fail from missing policy. Most boards I've sat on already have a principles document, a review process, an exception form, some kind of vendor questionnaire. What they don't have is a loop that closes, where each piece actually feeds the next one instead of sitting in its own binder. A decision gets made without an ADR. An exception gets approved without an expiration date anyone tracks. A vendor clears procurement before architecture ever sees the data flow. … [Read more...]

Filed Under: Architecture Tagged With: cybersecurity, enterprise-architecture

AI Agent Sprawl Is SaaS Sprawl With Better PR

August 11, 2026 by Ryan Horst

3D rendered ai text on dark digital background

Three million AI agents are now running inside corporate environments, according to Gravitee's State of AI Agent Security 2026 report, and the mean monitoring coverage across those estates sits at 52%. That's not a rounding error. That's an entire shadow estate of autonomous software making decisions, calling APIs, and touching data with almost no one watching. Put that next to Gartner's forecast that 40% of enterprise applications will ship with task-specific AI agents embedded by the end of … [Read more...]

Filed Under: Architecture Tagged With: cybersecurity, enterprise-architecture

An Architecture Exception Without an Expiration Date Isn’t an Exception

August 9, 2026 by Ryan Horst

text

A credential issued in 2022 for a limited pilot integration at Klue sat active for roughly four years after the pilot itself was quietly abandoned. Nobody owned it. Nobody reviewed it. Nobody put a date on the calendar for it to stop working, and that last part is the whole story. When the extortion group Icarus went looking for a way in, that single dormant token turned into the entry point for the Salesforce environments of close to 200 companies, according to TechCrunch's reporting on the … [Read more...]

Filed Under: Architecture Tagged With: cybersecurity, enterprise-architecture

What Belongs in an ADR (and What Doesn’t)

August 9, 2026 by Ryan Horst

What Belongs in an ADR (and What Doesn't)

Somebody on your team probably wrote an ADR last month titled something like "Adopt Prettier for the billing service," or "Standardize on camelCase for internal package names." Go read it back in six months and ask what it's actually protecting. Nothing. It's not wrong, exactly, it's just not architecture, and it's sitting in the same collection as the decision about who owns the customer identity record, as if the two carry the same weight. That's how ADR programs actually fail, and it took me … [Read more...]

Filed Under: Architecture Tagged With: cybersecurity, enterprise-architecture

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