docs.sr2.uk/docs/hosted.md

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2025-11-09 15:25:36 +00:00
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# Hosted CDR Link FAQ
CDR offers hosted Link helpdesk instances managed by our deployment partner [SR2 Communications](https://www.sr2.uk/),
a trusted team within the digital rights community, with a proven track record of securely handling sensitive data.
## Where do our hosted instances run?
Hosted instances run on SR2's public cloud, which in turn is hosted on servers rented from Hetzner Online GmbH.
The datacenter runs on 100% green electricity
([certificate](https://cdn.hetzner.com/assets/Uploads/oekostrom-zertifikat-2025.pdf))
and has [stringent security measures](https://www.hetzner.com/assets/Uploads/downloads/Sicherheit-en.pdf) in place
to prevent unauthorised access.
Hetzner holds an ISO 27001 certification ([certificate](https://www.hetzner.com/assets/downloads/ISO-Certificate.pdf))
relating to the security measures in place, and there are no exclusions from the scope in regard to measures mentioned
in Annex A of ISO/IEC 27001:2022.
<div style={{textAlign: "center"}}>
<img src="/img/sr2_hetzner_iso.webp" style={{width: "600px", maxWidth: "100%"}} />
</div>
SR2 exclusively and manages the servers from Scotland via mutually authenticated, end-to-end encrypted channels.
All CDR Link helpdesk data is stored on a
[LUKS-encrypted](https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/security_hardening/encrypting-block-devices-using-luks_security-hardening)
volume with a per-instance key to protect the data at rest.
Hetzner staff have physical server access, but strict controls are in place to prevent unauthorised access.