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Privacy Policy

Effective date: 1 June 2026 · Last updated: 5 September 2026

This Privacy Policy explains how idintiti ApS ("we", "us", "our") handles your personal data when you use Alloba Auth. We have designed the authentication service to collect and retain as little personal data as technically possible.

1. Data controller

The data controller for Alloba Auth is idintiti ApS. Contact: privacy@alloba.co.

2. What data we collect

Your email address (processed, not stored in readable form)
When you sign in, your email address is immediately transformed using a one-way cryptographic hash (HMAC-SHA256). We never store your email address in readable form. The hash is used solely to identify your account. We cannot reverse it to obtain your email.

Pseudonymous identifiers
Participating applications receive a pseudonymous subject identifier to complete authentication. We derive that identifier from your account and the one application receiving it, so every application receives a different identifier and no application can match its identifier against another application's. The identifier is never your email address, and we do not include your readable email address in the authentication tokens.

Session data
We store the authorization, token, and session records needed to complete and maintain sign-in. Authorization codes expire after one minute. Access and ID tokens expire within one hour, and browser sessions may last up to 24 hours.

Invite records
If you receive or send an invite, we store a record of the email hash of the invited address and the identifier of the inviter. No plaintext email addresses are stored in invite records.

Server logs
Our hosting provider (Railway) may retain standard server logs (IP addresses, request paths, timestamps) for up to 30 days for operational purposes.

3. Legal basis for processing (GDPR)

We process your data on the basis of:

  • Contract performance (Art. 6(1)(b) GDPR) — processing your email hash is necessary to authenticate you and provide the service.
  • Legitimate interests (Art. 6(1)(f) GDPR) — retaining invite records to prevent abuse.

4. Data retention

  • Authentication sessions: deleted automatically after expiry (1 hour or less)
  • Allowlist records (your email hash): retained for as long as your account is active
  • Invite records: retained for 12 months, then deleted
  • Server logs: up to 30 days (controlled by our hosting provider)

5. Data sharing

We do not sell your data. We do not share your data with third parties for marketing. We use the following sub-processors:

  • Railway (hosting and database) — Railway Privacy Policy
  • Resend (email delivery) — Resend Privacy Policy. Your email address is passed to Resend solely to deliver the one-time sign-in code. Resend does not store it beyond delivery.

6. Your rights under GDPR

You have the right to:

  • Access — request a copy of the data we hold about you
  • Erasure — request deletion of your account and associated data
  • Restriction — request that we restrict processing of your data
  • Portability — receive your data in a machine-readable format
  • Object — object to processing based on legitimate interests
  • Lodge a complaint — with the Danish Data Protection Agency (datatilsynet.dk)

To exercise any of these rights, contact us at privacy@alloba.co. Because we store your data by email hash (not plaintext email), we will ask you to verify your identity before processing a request.

7. Security

We use HMAC-SHA256 with a server-side secret for all email hashing. Database connections are encrypted. Authorization codes are short-lived and single-use, and access and ID tokens expire within one hour. We use S256 PKCE, signed JWTs, and timing-safe comparisons.

8. Changes to this Policy

We may update this Privacy Policy as the service evolves. Material changes will be communicated by updating the "Last updated" date above. We encourage you to review this page periodically.

9. Contact

Privacy questions: privacy@alloba.co