Cookies Policy
Which cookies and storage events we use, for what purpose and for how long.
1. About cookies
The sigmadata.eu website uses a minimal set of cookies and storage events for operation. We do not use behavioural tracking cookies or third-party tags (Google Analytics, Meta Pixel, etc.) — analytics runs on self-hosted Plausible Community Edition, without cookies.
2. Cookies and storage events used
Complete list of cookies and storage events used (as of the last update):
| Name | Purpose | Duration | Processor |
|---|---|---|---|
| sigma-lang | Language preference RO/EN | 1 year | Sigma (self-hosted) |
| Vercel session | User session (necessary) | Browser session | Vercel EU |
| Cal.com (embed) | Cal.com scheduling iframe functionality | Per embed session | Cal.com EU |
| Plausible (none) | Analytics without cookies — IP anonymised at processing | — | Plausible CE self-hosted (Hostinger DE) |
- Name
- sigma-lang
- Purpose
- Language preference RO/EN
- Duration
- 1 year
- Processor
- Sigma (self-hosted)
- Name
- Vercel session
- Purpose
- User session (necessary)
- Duration
- Browser session
- Processor
- Vercel EU
- Name
- Cal.com (embed)
- Purpose
- Cal.com scheduling iframe functionality
- Duration
- Per embed session
- Processor
- Cal.com EU
- Name
- Plausible (none)
- Purpose
- Analytics without cookies — IP anonymised at processing
- Duration
- —
- Processor
- Plausible CE self-hosted (Hostinger DE)
3. Sub-processors
List of sub-processors (all with EU/EEA jurisdiction) for services involving personal data processing:
| Processor | Purpose | Jurisdiction |
|---|---|---|
| Vercel | Hosting + edge CDN | EU (Frankfurt) |
| Cal.com | Audit / consultancy scheduling | EU (Ireland) |
| Resend | Transactional email (contact form) | EU (Ireland) |
| Upstash | Contact form rate-limiting | EU (Frankfurt) |
| Hostinger | VPS for self-hosted Plausible CE | DE (Frankfurt) |
This table is the single source of truth (SSOT). The /privacy page links here to avoid duplication.
4. How we manage consent
Essential cookies (Vercel session, sigma-lang) are enabled by default (no consent required — Art. 5(3) ePrivacy exemption).
Optional cookies (currently: none) would require CookieBanner consent. We will add a banner if/when we introduce opt-in analytics or marketing cookies.
Plausible CE does NOT use cookies — analytics is entirely cookie-free by design.
5. How to disable cookies
Your browser allows you to delete cookies from settings. Note: deleting sigma-lang resets the language preference to the default RO on the next visit.
6. Changes
The cookie list may evolve. Check the last-updated date in the footer.
Last updated:
