Mythos finds the what.
The Frenos Platform shows the how.

The Mythos Readiness Assessment is a free, one-day simulated penetration test from Frenos. We run hundreds of millions of adversarial decisions per second against a digital twin of your environment, on the only fully simulated AI penetration testing platform. You see exactly where an AI-era attacker would breach you, and what to fix first.
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Built by former OT practitioners.
Offered free because the community shouldn’t have to wait.

Frenos OT Security Practitioners

Frenos is a team of former OT security practitioners. We spent decades inside critical infrastructure environments, defending substations, plants, airports, and hospitals. That’s why we built the platform we wish we’d had back when we were running these systems.

Anthropic’s Project Glasswing and its Claude Mythos Preview have changed the math. AI agents can now autonomously discover zero-day vulnerabilities at a pace that makes traditional research timelines irrelevant. The 90-day disclosure clock starts the moment they do. Every major AI lab is racing toward the same capability. The threat model that justified most OT security budgets is already obsolete.

The OT community shouldn’t have to wait for the next budget cycle to find out where they’ll actually be breached. So we’re putting our platform in your hands for a day, at no cost. You provide the environment data; we provide the engine, the analysts, and the evidence. You walk away with a defensible view of your real attack paths. The call on what to do next is yours.

Perimeter security is over.
Find out what an AI-era attacker would actually do inside your environment.

Mythos doesn’t discover vulnerabilities the way a human researcher does, spending weeks or months fuzzing a single target. It reasons about code. It reads source code, identifies patterns, traces execution paths, and surfaces exploitable flaws at a pace that makes traditional vulnerability research look artisanal by comparison.

The question stops being “can we keep attackers out?” It becomes: “once they’re inside, what will they actually chain together to impact production?”

That’s attack path analysis at scale. It’s what Frenos was built to do. The Mythos Readiness Assessment is the one-day, no-cost on-ramp.

In a single business day, Frenos builds a consequence-free cyber digital twin of a representative slice of your environment, then runs hundreds of millions of adversarial decisions per second against it using SAIRA, our AI adversary reasoning agent. You walk away with a clear, defensible view of the routes an AI-era attacker would actually take through your network, and the highest-leverage moves you can make to close them. No agents. No production scanning. No surprises.

It’s the lowest-friction way to know (and prove) where your OT security program actually stands in an assume-breach world.

What you walk away with.

A consequence-free digital twin

A representative slice of your environment, built from data you already have (Claroty, Nozomi Networks, Dragos, Forescout, Tenable, RunZero & others).

Hundreds of millions of adversarial decisions per second

Executed by SAIRA against the twin. TTP simulations at a scale no manual red team can match.

A ranked list of viable attack paths

Each with prerequisites, consequences, and recommended detections and mitigations.

A Mythos Readiness Scorecard

An executive friendly view of your current posture against AI-era, assume-breach threats.

A prioritized mitigation roadmap

To tell you exactly where to invest next for the largest reduction in real risk.

A working session with the Frenos team

To walk through findings and align on next steps.

Receipts: 154,000 attack paths in 17 minutes.

At the S4x26 POC Pavilion, Frenos’s platform completed 154,000 OT attack path simulations in 17 minutes and 7 seconds. From three assumed-breach starting points (iDMZ, Plant Operations, Enterprise), SAIRA identified 18 validated attack paths into the critical Rockwell and Siemens zone. SAIRA confirmed those paths are exploitable given the actual controls, firewall rules, routing, and configurations modeled in the digital twin.

That’s the difference between a vulnerability list and a security posture assessment. 154,000 possible paths narrowed down to the 18 that actually matter. And it’s the same engine that powers the Mythos Readiness Assessment. Now available to any OT operator for a single business day, at no cost.

Read the Frenos S4x26 Case Study  »

Frenos S4x26 Case Study

Built for the leaders defending critical infrastructure in an assume-breach world.

The Mythos Readiness Assessment is designed for:

  • CISOs, VPs of OT Security, and Heads of Risk at utilities, energy, water, manufacturing, hospitals, transportation, oil and gas, and other industrial operators.
  • Security and risk teams that need defensible evidence for the board, regulators, cyber insurers, or an internal justification
  • Organizations preparing for the post-Glasswing zero-day surge who need to move from perimeter-centric to assume-breach defense.
  • Teams that have never been penetration tested in OT because of operational risk concerns or qualified-tester scarcity.

If you’re responsible for the cybersecurity posture of an operational environment and you can’t afford to be wrong about it, this is built for you.

Three steps. One day. No cost. Real evidence.

Step 1: Share what you already have.

You provide existing OT and network device: segmentation configurations, asset inventories, vulnerability data, and exports from your existing network and visibility stack. No scanning. No agents. No production access.

Step 2: We build the twin and run hundreds of millions of simulations.

Frenos builds a high-fidelity cyber digital twin of your environment in a consequence-free simulation. SAIRA executes hundreds of millions of adversarial decisions per second against the twin, modeling how an AI-era adversary would move once inside.

Step 3: You get the evidence and the plan.

We deliver your Mythos Readiness Scorecard, your ranked attack paths, and your prioritized mitigation roadmap in a live working session, all within the one-day engagement window.

 

Schedule your free Mythos Readiness Assessment.

Built on top of OT and security stack you already own.

The Frenos platform integrates across the industrial and security technology ecosystem.

The Mythos Readiness Assessment ingests data from the tools you’re already running or a spreadsheet you are maintaining. 

FAQ

Yes. The Mythos Readiness Assessment is offered at no cost. There’s no credit card, no spend commitment, and no obligation to continue with Frenos afterward. We’re a team of former OT practitioners. We built the platform we wish we’d had, and we’re putting it in your hands for a day because the community shouldn’t have to wait for a budget cycle to find out where they’ll be breached.

We define a representative scope with you up front (typically one site or one architecture pattern). You share existing OT and network data. No scanning, no agents, no production access. Frenos builds a high-fidelity digital twin in a consequence-free environment. SAIRA, our AI adversary reasoning agent, runs hundreds of millions of adversarial decisions per second against the twin. We close the day with a live working session walking through your Mythos Readiness Scorecard, ranked attack paths, and prioritized mitigation roadmap.

Your Mythos Readiness Scorecard, a ranked list of viable attack paths (with prerequisites, consequences, and recommended mitigations for each), and a prioritized mitigation roadmap. Yours to keep, regardless of what you do next with Frenos.

Either, the decision is yours. If on-site we show up with a fly away kit laptop with the Frenos Platform and you simply upload your data. Conducting fully remote in the cloud is also an option. Either way there’s no scanning, no agent installs, and touching of any operational technology environment.

If on-site the data stays on the laptop and we wipe once the engagement is over. If conducted remotely your data is handled under our standard MNDA and processed in a Frenos-managed environment with SOC 2 controls. Full details in our Privacy Policy and available on request.

Read the thinking behind the Mythos Readiness Assessment.

The Mythos Readiness Assessment is grounded in Frenos’s published view of the post-Glasswing OT threat landscape.

Three pieces are worth reading before or after your assessment:

  1. Finding the Bug Is Easy. Knowing What It Breaks Is the Hard Part  »

    Why AI-driven vulnerability discovery is about to flood OT teams with zero-days, and why digital twin simulation is the only way to keep up.

  2. Your OT Security Budget Was Built for a Threat That No Longer Exists  »

    How AI-driven vulnerability discovery has changed the math, and the three strategic pivots security leaders need to make.

  3. Day Two at the S4x26 POC Pavilion: 154,000 Simulations in 17 Minutes  »

    The receipts for what SAIRA can do in a consequence-free digital twin.

Don't wait for the zero-day surge to find out.

Free. One day. Zero production risk. Hundreds of millions of adversarial decisions per second. Evidence you can defend.

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