Product and OT cybersecurity
We are the best in product cybersecurity, and the pragmatic ones in OT.
Advice you can trust. Every time.
For product makers
Get your product through the EU CRA and IEC 62443 certificationWith the least change to how your team already builds.
For plant owners
Know your real risk and fix it without stopping productionPassive assessments, then security your own team can run.
Why RelyBlue
Two kinds of work, one standard of advice. And we earn nothing from the products we recommend.
IEC 62443-4-1, IEC 62443-4-2 and the EU CRA are not checklists to us. We write your process from how your team already builds, so the evidence exists before the audit starts.
We know why you never update firmware on a safety PLC during a batch run. We fix what matters with what you already have, and we prove designs on a testbed with real PLCs and SCADA before they reach your plant.
No fear tactics. We have turned down engagements where a service would not serve the client. Assessments are passive: not a single active packet into a production control loop. Anything active runs during FAT, SAT or scheduled downtime, or in a test environment.
Our track record
Numbers we can stand behind, from the products we help certify to the plants we assess and the people we train.
IEC 62443‑4‑1 and IEC 62443‑4‑2, with TÜV and exida.
Gap, risk and architecture reviews. Passive methods, zero production impact.
Operators, engineers and developers across India, the Middle East and Europe.
We recommend what fits your plant or product, whoever makes it.
Services
Know exactly where you stand before spending a rupee on tooling.
Gap AssessmentRapid maturity reviewRisk AssessmentIEC 62443 / NIST, detailed findingsPenetration TestingFAT, SAT or planned downtime
From findings to a funded, phased programme your board approves.
Strategy & RoadmapPhased, budget-alignedCybersecurity ProgramPut everything in orderCybersecurity SolutionsVendor-agnostic deployment
People and muscle memory, trained on real PLCs, not slides.
Awareness TrainingFor all plant & field staffJob Readiness TrainingRole-specific defenceCybersecurity TestbedsReal PLCs & SCADAIncident Response TTXPrepare for the D-day
CRA compliance and IEC 62443 certification for the products you ship, with the least change to how you build.
EU CRA ComplianceGap to conformity assessmentIEC 62443-4-1 SDLC CertificationYour way of working, audit-proofIEC 62443-4-2 CSA CertificationThe features your product is missingFractional Product Security AdvisorA strategic advisor, not a full-time hire
SEMI E187, E188 and E191 for fabs, OSATs and equipment makers.
Fab Security & SEMI ComplianceE187 / E188 / E191 roadmapEquipment OEM SecurityE187 tool hardeningMalware-Free Equipment ProgramE188 intake · E191 status reportingEcosystem AdvisoryYield, uptime & IP protection
Latest insights
From the founder
"The OT security market today runs on fear. Every headline becomes a reason to buy another platform, and too many assessments end as a shopping list of products and services rather than a plan for the plant in front of us."
"We work the other way round. We start from your process and your environment, look at the threats that actually reach a facility like yours, and apply engineering judgement rather than a checklist. Sometimes the right answer is a configuration change on equipment you already own. We would rather tell you that than sell you something you do not need."
Shamikkumar Dave
Founder and Principal OT Cybersecurity Advisor
RelyBlue Technologies
Talk to RelyBlue
Tell us about your product or your plant. The first conversation is free.
