European digital sovereignty

Hardened HCI hypervisor
for the European Union

97.45% of STIG hardening rules passing, publicly verifiable.
Built on SUSE Virtualization and the Harvester project.
Aligned with GDPR, NIS2, RGS.

Download Technical documentation

97,45 %STIG rules passing (adjusted)
153/157 evaluated

153/157CIS/STIG rules
validated (PASS)

65+STIG controls
applied at build time

enforcingSELinux

Results

153

CIS/STIG rules
validated (PASS)

residual FAILs
analyzed and documented

documented
tailoring exceptions

65+

STIG controls
applied at build time

Methodology — the two numbers in the report

The attached OpenSCAP report shows 91.67% at the top of the page. Our communication highlights 97.45%. This is not a contradiction — it's the choice of denominator.

Score	Formula	Value
Raw OpenSCAP score (shown in the report)	`score pondéré OpenSCAP` métrique native, en tête du rapport	91,67 %
Adjusted score (applicable rules only)	`PASS / (PASS + FAIL)` 153 / (153 + 4) = 153 / 157	97,45 %

Why exclude the 10 "notchecked" rules? These are rules whose status OpenSCAP cannot evaluate because a technical prerequisite is missing on our platform (e.g. Postfix package absent on headless HCI, pam_lastlog2 tools not packaged in SL Micro 6.2, audit-audispd-plugins not in repos). They are outside the evaluable technical scope — they measure neither success nor failure. Audit methodologies (DISA, CIS, ANSSI) traditionally exclude this type of rule from the denominator in compliance reports.

The 30 "notselected" rules are tailoring exclusions documented in reports/stig-exceptions.md (FIPS not available, smartcard N/A on headless HCI, partitions fixed by Elemental, etc.). They are legitimately out of scope and, by convention, count neither in the numerator nor the denominator.

Full transparency: the raw report is published below. Anyone can redo the calculation.

Positioning vs. competition

Product	Score	Scan report published	Context	MAC / SELinux
Hardpipe	97,45 %	✓ public HTML, replayable with oscap	EU (GDPR / NIS2 / RGS)	SELinux permissive (policies loaded, full audit)
VMware vSphere (STIG)	95 %	✗ STIG checklist public, vendor scan report not published	US / DoD	Proprietary hypervisor, no SELinux
Nutanix AHV	90 %	✗ STIG checklist public, vendor scan report not published	US / Gov Cloud	Rocky Linux 8 base (community RHEL rebuild, AOS ≥ 6.8) / CentOS 7 legacy, SELinux permissive by default
Proxmox VE	—	✗ no compliance claimed	EU (Austria, community)	Debian base, optional AppArmor

Methodology note: the DISA STIG checklists for Nutanix Acropolis (NCP #1325, 03/2026) and VMware vSphere are public. Those are the rule sets. Neither Nutanix nor VMware, however, publishes a scan report against the STIG: their marketing scores (90%, 95%) are not auditable. Hardpipe publishes the full HTML OpenSCAP report — rule by rule, replayable with oscap.

SELinux note: like VMware (no SELinux) and Nutanix AHV (permissive by default), Hardpipe runs SELinux in permissive mode. Policies are loaded; all violations are audited in /var/log/audit. Full enforcing on the KubeVirt/Longhorn stack is ongoing pioneering upstream work (no vendor offers it today).

Underlying OS: enterprise vs community. According to Nutanix's official KB (KB-16977), AOS and Prism Central before version 6.8 run on CentOS 7 (EOL June 30, 2024); AOS 6.8+, AOS 6.10 LTS and PC 2024.1+ migrate to Rocky Linux 8. Both are community rebuilds of RHEL — no vendor support contract on the OS itself. Hardpipe, by contrast, runs on SL Micro 6.2, a SUSE enterprise distribution (European vendor) with commercial support available.

Technical stack

Workloads (KubeVirt VMs + containers)

KubeVirt · Longhorn · CDI · Multus

RKE2 (K8s) — cis profile

containerd · runc · SELinux enforcing

Hardened SL Micro 6.2 + OpenSCAP slmicro62_hardened + AIDE + auditd

Why Hardpipe

Native EU context

Zero US-DoD references. Banners, documentation and regulatory mapping aligned with GDPR, NIS2, RGS. No dependency on a non-European vendor for hardening.

Verifiable, not announced

Our 97.45% is reproducible by any auditor with oscap. The full HTML report is available for inspection — no "trust us". Competitor DISA STIGs (Nutanix, VMware) publish the checklist, but no vendor scan report is publicly released for these products.