OT Cybersecurity Remediation: Program, Governance and Secure Design

Not unannounced, and not on our schedule. Every cutover runs inside a window you schedule, through your change process, with your operations team present and stop authority held by the plant. Rollback is built and proven off the running process beforehand, not improvised when a window starts to close.

Some of this work does need an outage: a core switch replacement, a controller network re-addressing or a firewall insertion at a live boundary. We identify those steps during scoping, complete the design, staging and pre-testing ahead of time, and schedule each cutover into the first window your plan allows, so nobody discovers the constraint in month four.

Then nothing changes until that is confirmed in writing with the vendor. Support position and warranty are checked before a system is altered, not after, and the check happens against the agreement rather than against what someone recalls being told.

Where the restriction genuinely holds, we do not proceed anyway and leave you carrying an unsupported system. We design a compensating control around it and record why. Sometimes the answer is simply that the constraint stands and the exposure is managed at the boundary instead.

To keep the design independent of the party building it, and to add capacity where you need it. If your integrator is capable and already inside your change process, our role can be the specification and the acceptance testing, so you are not accepting a design from the party being paid to implement it. Where you need more hands, our engineers deliver alongside your integrator under the same change control.

We hold no resale margin and no referral position in anything we specify, which is what allows the requirement to be written so you can tender it competitively rather than receive one supplier's architecture as the only option.

Yes. Firewall policy rebuilt from intent is a self-contained piece of work and it is frequently where an organization starts, because it delivers a visible result inside one or two maintenance windows.

The limitation is worth being direct about. Rebuilding a rule base without settling the zone model gives you a policy you can explain, enforcing an architecture nobody has agreed. That is a real improvement and it is not the same as segmentation. We will say which one you are buying.

Partly the handover: as-built documentation, configuration baselines, operating procedure and a working session with the team who will run the controls afterwards. Partly the discipline built into the design, such as expiry and removal written into the same change record that grants temporary access.

And partly an internal owner who has accepted the result. We help you name and prepare that owner as part of the handover, and where you want the controls operated and their drift measured continuously, InnovAKT Shield™ runs them with your team.

Either, and usually both. We run the measurement, the governance forums and the reporting, and our engineers can deliver the remediation and capability work alongside your teams and integrators, through your change control and your maintenance windows. The split is set in the program definition, around the capacity you have and the capacity you want to build.

What stays with you is ownership: a named internal owner takes the decisions and accepts the results between our visits. Until that person is appointed, OT CISO Advisory supports the executive who holds the risk.

It sometimes does, and the reason is usually one of three. A capability credited on intent at baseline is re-scored on evidence once that evidence is looked for. The estate grew through an acquisition, a new unit or a migration, and the denominator changed. Or a previously closed finding was re-validated and found to have drifted.

A method that cannot record a decline cannot credibly record an improvement either. We will not adjust the method to protect a trend line, and we will tell leadership which of the three causes applies, because the required response is different in each case.

No. Drills run on bench or spare equipment, on isolated hardware, or inside a window you schedule with operations present and holding stop authority. Safety systems are never part of a drill. If a scenario cannot be exercised safely under those conditions, it stays a tabletop scenario and the report says so.