Resilion is the OT Security Execution Engine that Scales People & Process
Hillstrong Group Security ·

Author: William Noto
Over the last decade, OT security platforms have delivered impressive tools: sensors, asset discovery systems, and dashboards that illuminate every PLC and protocol. These innovations are essential. But too many platforms stop at visibility. They leave a gap between knowing and doing. As one CISO put it, “Awareness alone isn’t enough. I need help getting work done.”
That’s why we built Resilion. It is a cloud-based OT Security Execution Engine designed to close the gap between visibility and progress. It keeps people and processes at the center. It scales execution across global sites and aligns with relevant OT standards and frameworks, such as IEC 62443, NIST CSF 2.0, and NIS2 as appropriate.
Why People and Process Matter More Than Ever
If you’ve spent any time in OT security, you know that technology alone doesn’t close gaps. Asset inventories, ruggedized firewalls, and threat detection are essential, but they don’t assign responsibilities, they don’t manage approvals, and they don’t coach site teams through remediation work. Most vendors still assume their users will handle governance in spreadsheets or email threads. In our experience, that’s a recipe for confusion and fatigue.
Resilion, the OT Security Execution Engine, was designed to solve that problem. We use AI to automate the heavy lifting. It ingests your corporate policy and compares it with IEC 6244321 and NIST CSF 2.0; for European plants it also checks against NIS2. Based on those findings, we generate tailored action plans. Those plans are always rooted in human reality. We map RACI matrices, route approvals to the right business stakeholders, and align controls to each site’s tier and regulatory context. The result is that people know exactly what to do, when to do it and why it matters. That’s how you drive OT security program maturity across a global fleet.
Scaling Execution Across Your Fleet
Consistency is hard when you’re dealing with five plants, let alone fifty. Resilion scales execution in a way that’s fair to every site. Our platform sets tierbased expectations rooted in IEC 6244321 (security program requirements for asset owners), IEC 6244333 (system security requirements and security levels) and NIST CSF 2.0, then generates work streams that reflect each site’s criticality, region and sector. For example, a European chemical plant will see NIS2 obligations layered into its roadmap. A U.S. pharmaceutical site can see tasks tied to FDA 21 CFR Part 11, governing electronic records and signatures, alongside its cyberphysical controls. Maturity models and dashboards let you see where you stand against both corporate standards and local regulations without chasing down status updates.
With our OT Security Execution Engine, you don’t just know which controls are missing; you get a living program that assigns tasks, captures evidence and updates maturity in real time. It’s how manufacturers can meet IEC 6244333 system requirements across hundreds of facilities while also satisfying sectorspecific rules. We’ve seen customers use this to cut remediation timelines by half and reduce OT security risk in measurable ways.
Contextualized Communications Built for OT Security
Another missing ingredient in most OT platforms is context. Conversations about patching, training or incident response happen in Teams or Outlook, stripped of the documents and data that matter. Resilion embeds communication directly into each object, e.g., policies, BIAs, RACI matrices, assessments, so discussions always happen where the work is. When you’re reviewing a maturity gap at a Tier 1 site, your peers in engineering, legal and risk can comment and approve within the same interface, with full visibility into the underlying controls and requirements. There’s no need to ping someone on Teams and hope they have the right document open.
This design enables crossfunctional buyin. OT security leaders can socialize a new OT security program with finance or legal, get approvals recorded against each section, and demonstrate full RACI alignment. Because everything is tied back to the OT Security Execution Engine, conversations don’t get lost and evidence is always ready for auditors—whether they’re asking about IEC 6244321, NIS2, FDA 21 CFR Part 11 or a companyspecific standard.
Partnering for Visibility and ROI
We’re proud of the technology we’ve built, but we know we’re not the only tool in your stack. That’s why Resilion is partnering with leading OT security vendors, including asset discovery platforms, vulnerability scanners, and anomaly detection tools, to ingest data on control performance and risk reduction. The goal is to give you a single place to see which controls are effective, where your investments are paying off, and which gaps still need attention. We’ll share more about these integrations as they roll out, but the theme is consistent: technology should enable people to act, not just alert them.
Looking Ahead
When I speak with early adopters, I’m candid: we’re moving fast, and we’re still refining our offering. That’s why our pilot customers are getting in at a very low cost compared to what Resilion will be worth once it’s generally available. We’re grateful for their feedback and excited about the progress they’re making. If you’re curious and want to shape the future of OT security, whether you’re facing NIS2 at your European plants, FDA 21 CFR Part 11 in your pharmaceutical operations or IEC 6244333 requirements across your manufacturing fleet, we’d love to talk. We’re available, we’re easy to work with, and we’re genuinely interested in your ideas.
Ready to see Resilion in action?
Contact us to schedule a demo and learn how our early access program can help you unify your OT security program and demonstrate proof of progress across your manufacturing fleet.