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Technical audit · 2026-05-29

bmwsb.bund.de

Federal Ministry for Housing, Urban Development and Building
DE

Policy changed — see what exactly · 2026-08-06 →

Federal Ministry for Housing, Urban Development and Building. 50 requests, 2 domains. GSB platform, Apache. BundesSchrift v3 and Fira Sans served locally. The Instagram CDN loads before the banner, without consent. The policy describes Instagram as an external channel, without mentioning the embedded feed. Set-Cookie — zero.

Timeline of the leak

+0 ms · homepage
www.bmwsb.bund.de/ — GSB, Apache. The CSP allows a broad set of services for internal pages: *.intercom.io, *.castr.com, *.itzbund.de, *.newsletter2go.com — none active on the homepage.
+90 ms · GSB styles
GSB CSS bundles (small, medium, large, xlarge, xxlarge, xxxlarge, custom, addon_usability) — all local. BMWSB is one of the few GSB sites with xxlarge and xxxlarge breakpoints.
+219 ms · fonts
BundesSchrift-v3-014: BundesSansWeb (Regular, Italic, Bold) and FiraSans-v4-301/Roman/FiraSans-Regular — four woff files, all local.
+250 ms · Instagram CDN — before the banner
scontent-dus1-1.cdninstagram.com — six JPEG images from BMWSB's Instagram account load directly from Meta's servers. An embedded Instagram feed on the homepage. Before the GSB cookie banner.
+564 ms · GSB cookie banner
www.bmwsb.bund.de/SiteGlobals/Modules/CookieBanner/DE/Allgemein/CookieBanner.html — the proprietary GSB banner. By the time the banner appears, the Instagram CDN has already made six requests.

Declared versus actual

✓ Matomo (piwik.itzbund.de) — mentioned in the policy with opt-out, consent-only — заявлен
✓ Instagram — mentioned in the Social Media section of the policy as an external channel (without embedding on the site) — заявлен
✓ YouTube, Twitter/X, LinkedIn, Mastodon (social.bund.de) — mentioned as external channels — заявлен
+ Instagram CDN (scontent-*.cdninstagram.com) — the embedded feed on the homepage is not described in the policy — не заявлен

Transfer timings

+250 ms scontent-dus1-1.cdninstagram.com

Meta / Instagram CDN. Düsseldorf edge. Six feed images. Before the banner.

Detected trackers

Indicators of GDPR non-compliance

Context

BMWSB (Bundesministerium für Wohnen, Stadtentwicklung und Bauwesen) is the Federal Ministry for Housing, Urban Development, and Building. GSB platform, Apache. HAR: 50 requests, 2 domains.

Instagram CDN before the banner — the policy does not describe the embedding

At +250 ms, six JPEG images from BMWSB’s Instagram feed load from scontent-dus1-1.cdninstagram.com (Meta CDN, Düsseldorf data center). The GSB cookie banner appears at +564 ms — the Instagram CDN beats it by ~314 ms. The visitor’s IP address is transmitted to Meta’s servers on every homepage visit.

BMWSB’s privacy policy contains a Social Media section describing Instagram as an external channel that users manage on their own responsibility: “Nutzerinnen und Nutzer nutzen diese Dienste in eigener Verantwortung.” The embedding of an Instagram feed directly on the ministry’s homepage is not mentioned in the policy — a substantial discrepancy between the declared and actual behavior.

BundesSchrift v3 and Fira Sans — local

BundesSansWeb v3-014 (Regular, Italic, Bold) and FiraSans v4-301 Regular — four woff files from /static/fonts/. No Google Fonts.

CSP — a rich stack for internal pages

The Content-Security-Policy permits *.intercom.io and js.intercomcdn.com (Intercom — support chat), *.castr.com (video streaming), *.newsletter2go.com (newsletters), multiplatform-f.akamaihd.net (Akamai CDN), hls-hd.myrasec.de (Myra Security). None of these are active on the homepage.

Conclusion

www.bmwsb.bund.de violates TDDDG §25(1): the Instagram CDN loads before the consent banner. The privacy policy describes Instagram only as an external channel, without disclosing the fact that a feed is embedded on the homepage.

Evidence
Original (audit)
HAR file: de/bmwsb-bund-de-2026-05-29.har
SHA-256: 7853ab424a383f7aeaf5a9a5bb1eeae3fd3a3127e7b88fd0c10733085ff4df1b
Re-check snapshot
Awaiting changes
HAR files are stored on EU infrastructure (Proton Drive). SHA-256 is published for integrity verification.
IMPORTANT: before filing a complaint with the regulator, first contact the company directly and give it 30 days to respond. Without this step the regulator may reject the complaint. Details and a template letter to the company are in the Methodology.
Ready-to-send complaint letter

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

To: Federal Commissioner for Data Protection (BfDI)
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 bmwsb.bund.de.

2. Circumstances
I visited the website bmwsb.bund.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) scontent-dus1-1.cdninstagram.com loads six images from BMWSB's Instagram account (+250–251 ms) — before the GSB cookie banner (+564 ms). The visitor's IP address is transmitted to Meta Platforms' servers in the USA on every page load. The privacy policy describes Instagram solely as an external channel and does not mention the embedded Instagram feed on the site's homepage.

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

3. Provisions violated
GDPR Art. 5(1)(a); TDDDG § 25(1)

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]