SERVICES

Cyber Services

At SEL, cybersecurity is a design principle—not an add-on. SEL Cyber Services designs and deploys turnkey operational technology (OT) security solutions tailor-made for our customers.

Our Services

From system assessment and baselining to cyber-defense solution development and ongoing system management, our full suite of security services helps strengthen your defenses and streamline the demands of maintenance and compliance.

Contact Us

We will happily schedule a time for you to talk with our experts about how we can meet your needs.
SEL provides services and solutions that streamline the demanding, potentially time-consuming tasks of maintaining compliance with international cybersecurity standards, such as NERC CIP, and keeping your infrastructure secure. Additionally, we define procedures and draft documentation that helps ensure your systems and processes are audit ready.Learn more about assessments, governance, and compliance.
We engineer cybersecurity into the foundations of OT systems. This strategy integrates layered defenses, secure networking, and robust perimeter protection to ensure the integrity and availability of critical infrastructure. Together, these elements form a resilient, defense-in-depth architecture that proactively defends against evolving cyber threats.Learn more about security resilience and design.
Accredited cybersecurity engineers help you understand regulatory standards for internal network security monitoring (INSM) and assess your existing system. SEL then designs and deploys an INSM solution that leverages any compatible devices you already own. Afterward, SEL helps draft the policies and processes you need to conduct INSM effectively and approach regulatory audits with confidence.Learn more about monitoring and detection.
There is no one-size-fits-all solution for cybersecurity. Whether you need help managing the security of your SEL-designed and -commissioned OT system or you need to maximize your cybersecurity effectiveness with sophisticated planning and response, we have a service package that meets your stage of the cybersecurity life cycle. And with our experienced staff carrying out as much of your day-to-day cybersecurity processes as you need, your teams can be free to do what they do best: keep your systems up and running.Learn more about life cycle support.

Our Approach

For over four decades, SEL has been meticulously innovating OT systems. We engineer comprehensive, long-term solutions, not quick fixes.This history informs SEL Cyber Services as it engineers custom solutions tailored to you. Our approach follows the principles of deny-by-default and zero trust to align with security standards like the National Institute of Standards and Technology (NIST) Cybersecurity Framework—ensuring robust, standards-based protection from the ground up.
To assess the specific needs of an organization, we start by assessing the maturity of its cybersecurity program. The cyber maturity spectrum starts with a reactive, ad hoc approach to security and ends with cycle improvement and optimization that are proactive, managed, and measured.
Deny-by-default is the strongest approach to designing communications paths in an OT zero-trust network architecture. We achieve this through OT software-defined networking (SDN), which is part of the U.S. Department of Defense Information Network Approved Products List. OT SDN allows you to precisely engineer which data can flow through your networks—and which can’t. Anything that doesn’t match the predefined set of rules is identified, denied by default, and either dropped or sent to an intrusion detection system. This eliminates vulnerabilities that lead to spoofing, MAC flooding and table poisoning, Bridge Protocol Data Unit (BPDU) attacks, ransomware attacks, and more.  
Zero trust is a powerful tool that helps security professionals determine optimal ways to design security controls for their networks. In industrial control system (ICS) and OT environments, this mindset must be applied with precision and context. Unlike traditional IT networks, ICS and OT networks prioritize availability and deterministic performance, which means security strategies must be carefully adapted to avoid disrupting essential operations.Crucially, zero trust in ICSs and OT is not about eliminating trust altogether. It’s about making trust explicit, measurable, and revocable. This requires continuous validation and a clear understanding of the operational impact of each security control.
Cybersecurity is a continuous cycle of assessing, augmenting, and analyzing. We believe you should think about cybersecurity daily, regardless of any certifications. That's why we base our ongoing efforts to secure critical infrastructure on the NIST Cybersecurity Framework.The NIST Cybersecurity Framework encourages system owners to better understand security in a nonprescriptive manner.

SEL Solutions in Action

Whitman County Emergency Management

Emergency Radio—A Community EffortLearn more 

Golden Valley Electric Association

Remote Engineering Access Solution Delivers Cybersecurity and ConvenienceLearn more 

ELES

Defending Critical Substation Communications in SloveniaLearn more 

Project Highlight

powerMAX Microgrid Control System Adds Reliability and Security for Campus’ Expanding GridLearn more 

Our Support

SEL offers complete cybersecurity support for every solution, system, and product we provide. We also practice and help our customers comply with applicable supply chain and cybersecurity standards.
All of our products are designed, tested, and manufactured in SEL-owned and -operated facilities in North America. We continually identify, monitor, and improve best practices to ensure your satisfaction.The SEL Cyber Services team uses a front-end engineering methodology to design systems that uniquely support your operational needs. When designing a security solution, we collaborate closely with our customers using a vendor-neutral approach, ensuring the final system is tailored to their specific operational requirements without bias toward any particular technology provider. SEL practices secure supply chain management, including verifying chains of custody, sourcing parts responsibly, and keeping reserve quantities of critical parts. Our quality management system is certified to ISO 9001 Quality Management System requirements.
When you choose SEL, you get more than products and services—you get a partnership. With ongoing cybersecurity life cycle services, SEL provides support tailored to your stage of cyber maturity. Cyber Services project engineers are ready to assist you from planning through final commissioning of the system. Afterward, you have access to technical support from specialists in ICS and OT applications, at no cost, as long as your SEL products remain in service.More about SEL quality and support
Workforce education is crucial in an effective security program. SEL is committed to promoting cybersecurity awareness and education, as well as training through seminars, conferences and tradeshows, and SEL University courses. Our Cybersecurity Center is a resource hub dedicated to advancing conversations about emerging technical concepts, new best practices, and the principles that underpin the work of securing critical infrastructure.Additionally, Cyber Services provides tailored training and documentation on the systems they develop.

Our Unique Value

SEL Cyber Services delivers end-to-end solutions for OT environments across diverse industries. With over 40 years of innovation in designing OT systems and close collaboration with world-class cybersecurity partners, we bring unmatched industry expertise. Because we invent and manufacture the devices at the core of our solutions, we offer exceptional flexibility and responsiveness to help you achieve your project goals.

Questions? Contact Us!

An SEL representative will follow up with you directly. We’re happy to answer all your questions and help you find the best solution for your needs.