End-to-End Cybersecurity for Your Critical Infrastructure

Flat networks, outdated firmware, and misconfigured access controls can render even compliant utilities vulnerable.

Only real-world testing reveals the gaps paper checklists miss.

OT Security Assessments

Aerstone’s OT Cybersecurity Assessments help utilities and critical-infrastructure operators establish a precise baseline of control-system security before deploying new detection or response tools. They go beyond paper audits with attack-aligned reviews of network segmentation, identity and access (including vendor remote access), protocol exposure, firmware and configuration hygiene, and architecture resilience across PLCs, HMIs, RTUs, relays, and historians.

Findings are mapped to safety and operational impact, and a prioritized remediation roadmap and reference architecture are provided in alignment with TSA pipeline security directives, DHS/CISA guidance (including VADR), and NERC CIP. Every engagement is designed for live-plant realities, so testing is safe, non-disruptive, and measured in reduced exposure and faster audit closure.

Security Architecture & Advisory

Modernizing utility infrastructure demands more than theory—it requires deep knowledge of operational realities. Aerstone’s certified OT/SCADA compliance specialists bring decades of hands-on experience designing secure architectures for critical infrastructure environments. Whether you’re segmenting legacy networks, integrating cloud-based controls, or pursuing Zero Trust, we help you build systems that are both defensible and audit-ready.

Our team has advised utilities across electric, gas, and pipeline sectors, ensuring that every architectural recommendation aligns with regulatory mandates, operational uptime requirements, and long-term scalability.

Post-Assessment Action & Virtual CISO Support

Cybersecurity doesn’t end with an assessment—it’s an ongoing journey. Aerstone stays engaged as a trusted partner to help utilities take action, maintain momentum, and adapt to evolving threats. Our OEM-agnostic, vendor-neutral approach ensures you’re not locked into any one toolset—we deliver guidance that fits your environment, not someone else’s roadmap.

We support everything from hands-on remediation to managed detection for ICS/SCADA networks, and offer continuous vulnerability monitoring to keep your defenses sharp between audits. With deep understanding of TSA, NERC CIP, and DHS compliance frameworks, our team helps ensure your improvements are technically sound and regulator-ready.

For utilities that need long-term guidance without adding headcount, our Virtual CISO service provides experienced leadership—strategic, scalable, and always aligned with your mission.

From electric cooperatives and regional pipeline operators to enterprise-scale utilities, our lean, expert-led approach delivers consistent results without bureaucracy.

The Aerstone Difference

Let’s Make Security Your Strongest Asset.

Our U.S.-based, veteran-owned team is ready to help you strengthen defenses, streamline compliance, and stay ahead of threats.

Our Approach

Their team of experts not only identified vulnerabilities we had never even considered, but also provided clear and actionable guidance on how to address them. Their professionalism, depth of knowledge, and commitment to our security were evident throughout the process. Thanks to Aerstone, we now have a much stronger security posture and a newfound sense of confidence in our digital defenses. I highly recommend their services to any organization serious about safeguarding their assets.”

We take pride in looking where others don’t, and our engagements often uncover vulnerabilities not found in previous tests. Equip your organization with the best defense.