For years, the main question security leaders faced about data was whether they were collecting enough of it. Today's leaders must now answer harder questions about where that data lives, and who controls it.
That is the result of cloud dependency risk. When the systems that hold your security data are operated, governed, and priced by a vendor in another jurisdiction, your security outcomes start to depend more on that vendor's decisions than on your own.
The Cloud and AI Development Act presents a clear policy solution to address that risk. Proposed by the European Commission on 3 June 2026 as part of the Technological Sovereignty Package, CADA sends a clear signal. Control of Europe's critical digital infrastructure should sit with the organisations that depend on it. Security evidence is only as sovereign as the system that holds it.
The SIEM is the system of record for security activity. It is where the answer to "who did what, when, and on which host" gets assembled. When an auditor, a board, and your own analysts want answers to those questions, they query the SIEM for evidence.
If that system runs in a vendor's cloud in another jurisdiction, the audit trail a regulator asks for and the investigation you run mid-incident both depend on their infrastructure, not yours. Sovereign log management guarantees the evidence stays within your jurisdiction and under your control.
Guardsix SIEM is self-hosted by design. The logs you collect and the trail you build from them never have to leave your control to be useful.
Both audit-readiness and security operations focus on the same evidence. The difference is that in an audit, person asking is an assessor checking your NIS2 measures, or your own board before a renewal. What they want to see is that you can detect, and then account for, what happens on the systems you run.
That leads to different questions than a typical incident investigation. Sovereignty makes answering those questions much simpler.
An assessor rarely doubts that you have endpoint protections. The harder question is whether you would know if someone quietly switched one off — by deleting the registry policy keys that decide what an endpoint blocks. Evidence that this is monitored is what satisfies the question.
A single search returns every registry policy-key deletion over the last seven days, with the noise from trusted system processes filtered out. Each row is a complete account — the user, the host, the process, the key it touched, and the timestamp.
A Guardsix SIEM search for registry-key deletions on Windows endpoints, showing who, what, where, and when.
A coverage gap is one of the most common audit findings. Your team might watch Windows closely, but barely cover the organisation's Linux servers. Showing that the same scrutiny reaches Linux closes that gap before it becomes a finding. The same query layer surfaces tampering with the authentication modules under /etc/pam.d and /lib/security, correlated so the pattern between files, commands, and events is legible at a glance.
Evidence that monitoring extends to Linux authentication, showing the kind of estate coverage that assessors check for.
Detecting an event is half of what NIS2 expects of incident response teams. The other half is producing an account you can stand behind. Selecting a process opens its full lineage and identifying what launched it, its hash, the files it wrote, the libraries it loaded, with a direct pivot to external threat intelligence to confirm. Producing a single defensible record makes demonstrating compliance much easier than piecing together a series of scattered alerts
The process tree: a single, defensible reconstruction of what the malicious RoguePlanet process did, from parent to hash to disk activity, with a one-click pivot to verify.
All of these examples share an underlying point. Audit-readiness is not just about having the answers. It is about holding the evidence in a centralised system that you can easily access and control. A record is only as defensible as its custody — where it lives, who governs it, whose law can reach it. With Guardsix SIEM, the evidence chain stays yours end-to-end.
Most of the teams running Guardsix SIEM are small by industry standards. Cloud-first SIEMs are designed for enterprise security teams with a dedicated detection engineering function — not a handful of people answering to a board and a regulator. Keeping the evidence sovereign pays back three ways.
Every SIEM collects logs. That is the price of entry, not a reason to choose one platform over another. The value of security operations is expressed in what happens to the evidence afterwards — under whose control it sits, under whose law it falls, and how durable your relationship with the vendor responsible truly is.
This is what separates Guardsix from cloud-first vendors and hyperscaler platforms. The cloud business model puts data outside your jurisdiction, and meters the price by how much you ingest. Guardsix keeps your data under European law alone, pricing by node rather than by volume so spend stays plannable, and delivers an on-prem roadmap that keeps getting better.
With the CADA proposal codifying sovereignty for all European organisations subject to NIS2, that can mean the difference between a fast, stress-free audit and one where the outcome is not guaranteed.
All of this points in a single direction. European organisations are taking back control of where their security data lives, who operates it, and what it costs next year. Our playbook on The Cloud and AI Development Act sets out what the proposal means for your sovereignty posture, and how to get ahead of it. Your data. Your deployment. Your jurisdiction.