Technical audit · 29.05.2026

bauindustrie.de

German Construction Industry Federation

Hauptverband der Deutschen Bauindustrie — the German construction industry federation. 69 requests, 1 domain. Matomo self-hosted at /matomo/ — all data stays on the proprietary server. The policy states consent (Einwilligung) as the legal basis. But Matomo fires with no recorded consent in the HAR.

Request timeline

+211 ms · load

CSS, JS bundles, images — all from www.bauindustrie.de. Roboto (Regular, Light, Medium, Bold, Black) — served locally from /_assets/Fonts/.

+212 ms · consent

Consent-938150a02ba8f92b05cbc2453b5b4166.js — a TYPO3 consent extension. Loads before Matomo.

+348 ms · Matomo JS

www.bauindustrie.de/matomo/matomo.js — the Matomo JS loads from the proprietary server.

+456 ms · tracking request

www.bauindustrie.de/matomo/matomo.php — a Matomo tracking request. Cookieless, AnonymizeIP enabled.

Declared versus actual

✓ Matomo — documented with Art. 6(1)(a) DSGVO (Einwilligung) — declared

✓ AnonymizeIP — documented — declared

✓ opt-out — documented — declared

Transfer timings

+212 ms www.bauindustrie.de

TYPO3 Consent-JS. No banner interaction recorded.

+348 ms www.bauindustrie.de

matomo/matomo.js. Self-hosted.

+456 ms www.bauindustrie.de

matomo/matomo.php. Page tracking.

Detected trackers

Matomo self-hosted (www.bauindustrie.de/matomo/)

Indicators of GDPR non-compliance

GDPR Art. 7; TDDDG § 25 — Matomo before recorded consent
The policy declares Matomo on the basis of Art. 6(1)(a) DSGVO (Einwilligung — consent). Consent-938150a02ba8f92b05cbc2453b5b4166.js loads at +212 ms. Matomo.js loads at +348 ms. Matomo.php sends a tracking request at +456 ms with action_name=Hauptverband der Deutschen Bauindustrie. The HAR shows neither a SET-Cookie from a banner nor any explicit user interaction with a consent interface before tracking fires. If consent is the stated legal basis (Einwilligung), Matomo should activate only after it has been obtained.

Context

Hauptverband der Deutschen Bauindustrie (HDB) is the federal industry federation of Germany’s construction sector, representing around 2,000 companies. TYPO3 CMS. HAR: 69 requests, 1 domain — all to www.bauindustrie.de.

Self-hosted Matomo — good architecture, a problematic legal basis

HDB uses Matomo, hosted on its own server at the path /matomo/. This means analytics data is not transmitted to third parties, does not go to any cloud, and is processed exclusively on bauindustrie.de’s infrastructure. AnonymizeIP is enabled — IP addresses are anonymized. The policy states an opt-out mechanism.

The problem lies in the legal basis. The policy states explicitly: Art. 6(1)(a) DSGVO (Einwilligung) — consent. This means HDB itself classified Matomo as a tool requiring consent. Yet Matomo loads at +348 ms and sends a tracking request at +456 ms. The HAR shows neither an interactive banner, nor a SET-Cookie from a consent mechanism, nor any explicit user interaction before Matomo fires.

The contrast with bamf.de is instructive: there, Matomo is documented with opt-out and is absent from the HAR. Here, Matomo is documented with Einwilligung — and is present in the HAR before consent.

Roboto served locally

Five Roboto weights (Regular, Light, Medium, Bold, Black) are hosted locally in /_assets/Fonts/. No Google Fonts.

Conclusion

bauindustrie.de chose the right technical architecture (self-hosted Matomo, local fonts, one domain) and the correct legal basis (Einwilligung). The mismatch lies in the implementation: Matomo fires before confirmed consent is obtained. The fix is straightforward: ensure Matomo initializes only after the user’s consent decision has been recorded by the TYPO3 consent extension.

Evidence

How to verify: download the file and compute its checksum — sha256sum file.har (Linux, macOS) or certutil -hashfile file.har SHA256 (Windows); it must match the one shown. The conclusions apply to the scope of this measurement — see the limitations of the method.

Original (audit)

HAR file: de/bauindustrie-de-2026-05-29.har

SHA-256: a8d650c39a39fb357923ccde52c150057d9fdde8cb7cfca93d0bd80afdd7ee41

Re-check snapshot

Awaiting changes

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

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Filing date:

All fields are required to print the document — this is a formal requirement of the letter itself (the particulars of an official submission), not data collection: nothing is sent or saved anywhere, it all stays in your browser and disappears when you close the page. See the methodology for details.

Step 1. Data access request (GDPR Art. 15)

Send this letter directly to the company first — before contacting the regulator it has the right to respond (GDPR Art. 12(3) — 30 days).

Тема: Запрос доступа к персональным данным (ст. 15 GDPR) — bauindustrie.de

Кому: [укажите адрес компании — DPO / поддержка / юридический отдел]
От: [Ваше имя], [контактный email]

Прошу предоставить доступ к моим персональным данным, обрабатываемым в связи с использованием сайта bauindustrie.de.

1. Категории данных и цели обработки (ст. 15(1)(a)-(c))
На основании независимого технического анализа сайта прошу подтвердить и подробно раскрыть следующие категории обработки:

1) Политика декларирует Matomo на основании Art. 6 Abs. 1 a) DSGVO (Einwilligung — согласие). Consent-938150a02ba8f92b05cbc2453b5b4166.js загружается на +212 мс. Matomo.js — на +348 мс. Matomo.php отправляет трекинговый запрос на +456 мс с action_name=Hauptverband der Deutschen Bauindustrie. В HAR не зафиксировано ни SET-Cookie от баннера, ни явного взаимодействия пользователя с consent-интерфейсом до срабатывания трекинга. Если согласие является правовым основанием (Einwilligung), Matomo должен активироваться только после его получения.


2. Получатели, сроки хранения и передача за пределы ЕЭЗ (ст. 15(1)(c)-(d), 46)
Прошу также указать полный список третьих лиц-получателей, применимые сроки хранения по каждой категории и правовые основания передачи данных за пределы ЕЭЗ, если таковая происходит. Полный технический разбор с доказательствами (сохранённый сетевой журнал, контрольная сумма SHA-256) опубликован по адресу: https://gdpru.eu/en/audits/de-bauindustrie-de/

3. Автоматизированная обработка и профилирование (ст. 15(1)(h))
Прошу сообщить, применяется ли в отношении меня автоматизированное принятие решений или профилирование, и если да — раскрыть логику такой обработки.

С уважением,

[Ваше имя]
[контактный email]
[Страна]


[Дата]

Subject: Data access request (GDPR Art. 15) — bauindustrie.de

To: [insert the company's address — DPO / support / legal department]
From: [Your name], [contact email]

I request access to my personal data processed in connection with the website bauindustrie.de.

1. Categories of data and purposes of processing (Art. 15(1)(a)-(c))
Based on an independent technical analysis of the site, I request confirmation and detailed disclosure of the following categories of processing:

1) The policy declares Matomo on the basis of Art. 6(1)(a) DSGVO (Einwilligung — consent). Consent-938150a02ba8f92b05cbc2453b5b4166.js loads at +212 ms. Matomo.js loads at +348 ms. Matomo.php sends a tracking request at +456 ms with action_name=Hauptverband der Deutschen Bauindustrie. The HAR shows neither a SET-Cookie from a banner nor any explicit user interaction with a consent interface before tracking fires. If consent is the stated legal basis (Einwilligung), Matomo should activate only after it has been obtained.

2. Recipients, retention periods, and transfers outside the EEA (Art. 15(1)(c)-(d), 46)
I also request the full list of third-party recipients, the applicable retention period for each category, and the legal basis for any transfer of data outside the EEA. The full technical audit with evidence (saved network log, SHA-256 checksum) is published at: https://gdpru.eu/en/audits/de-bauindustrie-de/

3. Automated processing and profiling (Art. 15(1)(h))
Please state whether I am subject to automated decision-making or profiling, and if so, disclose the logic involved.

Sincerely,

[Your name]
[contact email]
[Country]

[Date]

30 days have passed since contacting the company with no response? → Show the regulator complaint letter

Ready-to-send complaint letter

Where to file: Federal Commissioner for Data Protection (BfDI) — file a complaint online →

The regulator reviews complaints in its national language. There is an officially translated template from the European Data Protection Board (EDPB) — you can use it instead of or alongside this letter: Official EDPB complaint form (PDF, your language)

Тема: Жалоба на обработку персональных данных — bauindustrie.de

1. Предмет жалобы
Я подаю жалобу в отношении обработки моих персональных данных сайтом bauindustrie.de.

2. Обстоятельства
Я посетил сайт bauindustrie.de и обнаружил признаки несоответствия обработки моих персональных данных требованиям GDPR. Технический разбор, опубликованный на gdpru.eu 29.05.2026 (открытая методология, воспроизводимые измерения), документирует следующие признаки:

1) Политика декларирует Matomo на основании Art. 6 Abs. 1 a) DSGVO (Einwilligung — согласие). Consent-938150a02ba8f92b05cbc2453b5b4166.js загружается на +212 мс. Matomo.js — на +348 мс. Matomo.php отправляет трекинговый запрос на +456 мс с action_name=Hauptverband der Deutschen Bauindustrie. В HAR не зафиксировано ни SET-Cookie от баннера, ни явного взаимодействия пользователя с consent-интерфейсом до срабатывания трекинга. Если согласие является правовым основанием (Einwilligung), Matomo должен активироваться только после его получения.

Полная техническая документация опубликована по адресу: https://gdpru.eu/en/audits/de-bauindustrie-de/

3. Положения GDPR, соблюдение которых прошу проверить
GDPR Art. 7; TDDDG § 25 — Matomo до зафиксированного согласия

4. Требование
Прошу проверить изложенные обстоятельства и, если несоответствие подтвердится, принять меры, предусмотренные статьёй 58(2) GDPR.

5. Приложения
Полная доказательная база — HAR-файл, контрольная сумма SHA-256 и цитата из политики конфиденциальности сайта, документирующая указанное противоречие — опубликована и проверяема по ссылке в пункте 2 выше.

С уважением,

[Ваше имя]
[контактный email]
[Страна]

[Дата]

Subject: Complaint regarding personal data processing — bauindustrie.de

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

2. Circumstances
I visited the website bauindustrie.de and found indications that the processing of my personal data does not comply with the GDPR. The technical analysis published on gdpru.eu on 29 May 2026 (open methodology, reproducible measurements) documents the following indications:

1) The policy declares Matomo on the basis of Art. 6(1)(a) DSGVO (Einwilligung — consent). Consent-938150a02ba8f92b05cbc2453b5b4166.js loads at +212 ms. Matomo.js loads at +348 ms. Matomo.php sends a tracking request at +456 ms with action_name=Hauptverband der Deutschen Bauindustrie. The HAR shows neither a SET-Cookie from a banner nor any explicit user interaction with a consent interface before tracking fires. If consent is the stated legal basis (Einwilligung), Matomo should activate only after it has been obtained.

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

3. GDPR provisions I ask you to examine
GDPR Art. 7; TDDDG § 25 — Matomo before recorded consent

4. Request
I request that you examine the circumstances described and, if non-compliance is confirmed, 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.

Sincerely,

[Your name]
[contact email]
[Country]


[Date]