Secure software is reliable software
Products
Our protocol libraries make it easy to integrate Modbus and DNP3 into your applications.
Services
We provide custom development to help you solve your most pressing electrical infrastructure software challenges.
Community
We contribute to a number of open source projects both within and outside the industry. Our products are openly available for evaluation.
R&D
We participate in research and standardization efforts to help the industry select technologies that will have a lasting impact on reliability and security.
Protocol Libraries
Our libraries are written in safe Rust with bindings available for a number of other languages including C/C++, .NET, and Java. They offer both native performance and the security and reliability of a higher-level language.
Read More About RustAegis Fuzzer
Aegis is a protocol aware smart fuzzer. We use Aegis to test our libraries; we also license it for testing 3rd party implementations of protocols. Aegis models the protocol under test, generating large numbers of intelligently malformed test cases.
Read Morednp3c
dnp3c is our open source DNP3 conformance project. It runs the DNP3 IED Certification Procedure against an outstation unattended, so conformance is checked in CI on every commit, just as we do for our own DNP3 library. It also runs from the command line for testing at the bench.
Read MoreExpertise
We have deep experience in electric power, software engineering, and software security. We can provide subject matter expertise or contract to implement portions of your product or platform. We actively work with clients using Rust, C/C++, Java, and .NET on a routine basis.
Read MoreHave any questions for us?
Reach out to inquire about our products or to scope a services engagement with our team. We can structure most projects on a T&M or fixed-price basis to meet your needs.
Latest News & Articles
We love to blog about industry trends and software engineering. Check back often for new posts, or follow us on social media.
dnp3c: Open Source DNP3 Conformance Testing
We’ve released dnp3c, the DNP3 conformance test harness we’ve used internally for over a decade, as open source under the GPL. It runs the DNP Users Group’s IED Certification Procedure against an outstation, either by hand or completely unattended in CI.
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The Case Against DNP3 SAv6 and AMP
DNP3’s new security protocol reinvents what TLS already provides, and it will be implemented by vendor teams that have historically struggled to safely parse basic DNP3 messages. Use TLS. It’s proven, audited, and your developers don’t need to be cryptographers.
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Battalion Energy
I’m pleased to announce that I’ve joined Battalion Energy as cofounder and CTO. We’re building a cloud + edge controls platform focused on battery energy storage. There are so many things that excite me about this venture: Extremely talented founding team with a track record of building Awesome Things™. Building a modern and secure controls platform using 🦀Rust🦀 and webassembly! Disruptive business model in a rapidly expanding market. Company focus on open APIs, open ecosystems, and playing nice with others.
Read MoreWhat Others Are Saying
Don't just take it from us. Ask around. We've been working on software and security projects in electric power for over a decade.
"Adam is consistently leading the field on design and testing of industrial protocols and the latest development tool set innovations. Tech from Step Function I/O is a smart bet."
Bryan Owen, Security Architect, OSIsoft LLC
"Adam and the experts at Step Function I/O are more than just leaders in the industrial reliability and security space, they are renowned practitioners."
Ronnie Fabela, Co-Founder, SynSaber
“At EPRI, we have built a number of protocol drivers and device simulators for DER applications that use the OpenDNP3 library. We are very impressed by the high-quality library and documentation.”
Jithendar Anandan, Smart Grid Developer, EPRI