auftrag.at

Austria's public tenders platform — 57 requests, 9 domains, all within the EU. A PostHog EU instance loads 280 ms before the Usercentrics CMP. Wiener Zeitung Digital Publications GmbH is the operator.

Timeline of the leak

+1313 ms · before banner

PostHog EU (eu-assets.i.posthog.com) — config loads. EU instance, data stays in the EU.

+1426 ms · before banner

PostHog EU (eu.i.posthog.com/e/) — first event sent. Before consent.

+2947 ms · banner ready

Usercentrics consent API — banner configuration fully loaded.

Indicators of GDPR non-compliance

GDPR Art. 6(1), Art. 5(1)(a)

PostHog EU (+1313 ms) loads 280 ms before the Usercentrics CMP (+1593 ms). Visit data is sent out before the consent banner appears.

Context

auftrag.at is an Austrian public procurement and government tenders platform, operated by Wiener Zeitung Digital Publications GmbH (a subsidiary of the historic Wiener Zeitung). Publishes tenders from Austrian state authorities. DPO: datenschutz@auftrag.at. HAR: 57 requests, 9 domains.

Everything within the EU — a sound architecture

Nine domains — all European. PostHog EU (eu-assets.i.posthog.com, eu.i.posthog.com) — the European PostHog instance, with data stored in the EU. Usercentrics (web.cmp.usercentrics.eu) — a German CMP. Not a single American service, no Google Analytics, no Facebook, no Cloudflare.

PostHog before Usercentrics — 280 ms

PostHog EU loads its config at +1313 ms and immediately sends the first event at +1426 ms. The Usercentrics CMP only appears at +1593 ms. A 280 ms gap — PostHog collects visit data before the user ever sees the banner.

The fix is a technical one: initialize PostHog only after consent is obtained through Usercentrics. Usercentrics supports integration with PostHog via its own SDK — blocking before consent can be configured in a few lines.

Policy — detailed, in Russian

Unusually, auftrag.at’s privacy policy is written in Russian — likely copied from a template or machine-translated. Dated February 25, 2026. It describes the operator (Wiener Zeitung Digital Publications GmbH, Maria-Jacobi-Gasse 1, 1030 Vienna), DPO contact, categories of data, and legal bases. PostHog is not mentioned in the policy.

Conclusion

auftrag.at has the right European architecture: PostHog EU instead of Google Analytics, Usercentrics instead of OneTrust. The only problem is load order: PostHog must wait for consent from Usercentrics. This can be fixed in a few minutes via the Usercentrics integration.

Evidence

Original (audit)

HAR file: at/auftrag-at-2026-05-26.har

SHA-256: ca0749caf91ee1e5f24b5fb66e7d246c680e1c618e2389f17517afccdcd951b3

Re-check snapshot

Awaiting changes

HAR files are stored on EU infrastructure (Proton Drive). SHA-256 is published for integrity verification.

Ready-to-send complaint letter

Where to file: Datenschutzbehörde (DSB) — file a complaint online →

To: Datenschutzbehörde (DSB)
From: [Your name], [contact email]

1. Subject of the complaint
I am filing a complaint regarding the processing of my personal data by the website auftrag.at.

2. Circumstances
I visited the website auftrag.at and found indications that the processing of my personal data does not comply with the GDPR. The technical analysis published on gdpru.eu on 26 May 2026 (open methodology, reproducible measurements) documents the following indications:

1) PostHog EU (+1313 ms) loads 280 ms before the Usercentrics CMP (+1593 ms). Visit data is sent out before the consent banner appears.

Full technical documentation is published at: https://gdpru.eu/en/audits/at-auftrag-at/

3. Provisions violated
GDPR Art. 6(1), Art. 5(1)(a)

4. Request
I request that you investigate the violations described and apply the measures provided for in Article 58(2) GDPR.

5. Attachments
The full evidence base — the HAR file, its SHA-256 checksum and the quotation from the site's privacy policy documenting the stated contradiction — is published and verifiable at the link in point 2 above.

[Date]                                    [Signature / name]