CASUS
Data storage 3/3
What the vendor states (our summary):
Switzerland (Google Cloud Zurich, europe-west6)
What this means: Switzerland only, or customer on-premises. Where data rests decides which law and which authorities can reach it. Swiss firms often require Swiss residency for client matters.
Where the AI runs / sub-processors 2/3
What the vendor states (our summary):
CH + EU only: Google Vertex AI Belgium; Azure OpenAI Switzerland North & Sweden Central; zero data retention; no US inference
What this means: Switzerland plus EU/EEA. Storage and AI processing are often in different places. A tool can store data in Zurich and still send prompts to models in another country.
US Cloud Act exposure 1/3 ⚖︎
What the vendor states (our summary):
Swiss vendor, but storage and inference run on US-parent hyperscalers (Google, Microsoft)
⚖︎ Judgment call: Swiss vendor, but storage/inference on a US-parent hyperscaler that can be compelled under the Cloud Act.
What this means: Non-US vendor on US-parent clouds/models. The US CLOUD Act lets US authorities require US providers to disclose data in their possession, custody or control, wherever it is stored. This score is always an editorial judgment call.
Art. 321 SCC auxiliary terms 3/3
What the vendor states (our summary):
Terms of Service recognise CASUS and staff as auxiliary persons (Art. 321 SCC); Hilfsperson status listed as contractual commitment
What this means: Contractual auxiliary-person (Hilfsperson) status or external legal opinion. Under Art. 321 SCC, auxiliaries of a lawyer are bound by professional secrecy, and Art. 13 para. 2 BGFA/LLCA makes the lawyer responsible for ensuring they respect it. Written auxiliary terms help document that.
revFADP / GDPR processing agreement 3/3
What the vendor states (our summary):
DPA listed in Trust Center; states revFADP compliance
What this means: Public DPA that names the revFADP. Art. 9 revFADP and Art. 28 GDPR require a contract (or legal basis) when a processor handles personal data on your behalf.
No training on customer data 3/3
What the vendor states (our summary):
No training or fine-tuning, by CASUS or model providers (contractual)
What this means: Contractual no-training, including model providers. If customer data trains a model, confidential content could surface elsewhere. Look for a contractual ban that also binds model providers.
ISO 27001 / SOC 2 1/3
What the vendor states (our summary):
Infrastructure (Google Cloud, Azure) ISO 27001; no own certification stated
What this means: Infrastructure-only or planned. Independent audits (ISO 27001, SOC 2 Type II) give evidence that security controls exist and are tested.
What to ask this vendor
- Where the AI runs / sub-processors In which countries do the AI models process our prompts, including fallback or peak-load routing?
- Where the AI runs / sub-processors Please provide the full sub-processor list with locations, and how we are notified of changes.
- US Cloud Act exposure Is your company or any sub-processor in the processing chain a US company or a subsidiary of one?
- US Cloud Act exposure How would you respond to a foreign government request for our data, and will you notify us?
- ISO 27001 / SOC 2 Please send your current ISO 27001 certificate and scope, or SOC 2 Type II report.
- ISO 27001 / SOC 2 When was your last independent penetration test?
Informational only, not legal advice. Results reflect vendors’ public statements on the date checked and our scoring rules. Verify contracts yourself before using any tool with client data.