Technical audit · 2026-05-29

bfdi.bund.de

Federal Commissioner for Data Protection and Freedom of Information

BfDI — Germany's federal data protection regulator, overseeing GDPR enforcement. 38 requests, 2 domains. The only external one is social.bund.de (a state Mastodon server). Source Sans Pro and Source Serif 4 served locally. No analytics, no trackers, only session cookies under § 25 Abs. 2 TDDDG. Full compliance.

Timeline of the leak

+81 ms · load
CSS, SVG icons, images — all from www.bfdi.bund.de. On the homepage: Cookie-Banner.jpg, Datenschutz-Schild-mit-Haken.jpg — visual content about data protection.
+231 ms · Mastodon
social.bund.de/system/accounts/avatars/000/000/003/original/a85f358db65f96d5.gif — BfDI's account avatar on the state Mastodon server. The only external request.
+233 ms · JS
www.bfdi.bund.de/global.js — the only JS file.
+262 ms · fonts
Source Sans Pro (Regular, Bold, BoldIt, It) and Source Serif 4 (SemiboldIt) — all local, at /static/fonts/. No BundesSans — BfDI uses its own font choice.
No trackers
No Matomo, no etracker, no analytics. No cookie banner — nothing to ask: only technically necessary session cookies under § 25 Abs. 2 TDDDG are used. Set-Cookie — zero.

Declared versus actual

Session cookies — § 25 Abs. 2 TDDDG (technisch notwendig) — заявлен
Log file (Protokolldatei, 30 days, ITZBund) — documented — заявлен
No analytics or advertising cookies — explicitly declared — заявлен

Transfer timings

+231 ms social.bund.de

BfDI's Mastodon avatar. State infrastructure.

Context

BfDI (Der Bundesbeauftragte für den Datenschutz und die Informationsfreiheit) is the independent federal body overseeing GDPR compliance by Germany’s federal agencies, as well as by telecommunications companies. BfDI is the body that issues TDDDG guidance and rules on GDPR complaints at the federal level. HAR: 38 requests, 2 domains.

Zero analytics — an explicit policy stance

BfDI’s privacy policy states directly: “Techniken, wie zum Beispiel Java-Applets oder Active-X-Controls, die es ermöglichen, das Zugriffsverhalten der Nutzer nachzuvollziehen, werden nicht eingesetzt.” This is a declared rejection of any behavioral-tracking tools — not merely documenting an absence, but an explicit policy statement. There is no Matomo, no etracker, no Piano Analytics, no GTM in the HAR. Only session cookies are used, classified as technisch notwendig under § 25 Abs. 2 TDDDG — with no banner, which is correct for this category.

Source Sans Pro and Source Serif — not BundesSans

BfDI uses Source Sans Pro (Adobe Open Source) and Source Serif 4 — both hosted locally — instead of the standard state platform’s BundesSansWeb. This indicates that BfDI does not use the standard BUND-CMS platform operated by ITZBund, but manages its site through a separate CMS installation. Nonetheless, the principle of local font hosting is upheld.

social.bund.de — the only external domain

Like BMI, BfDI uses the state Mastodon server social.bund.de to display a feed of posts. One request — BfDI’s account avatar. State infrastructure, with no data transfer outside the state perimeter on page load.

Place within the German series

BfDI joins the reference-standard row of the German series. For a regulator whose function is to oversee GDPR compliance by other federal bodies, a zero result is the baseline expectation. dataprotection.ie (one request against one statement) and comreg.ie (the ePrivacy regulator with a 1299 ms gap before the banner), both from the Irish series, form a direct contrast. BfDI demonstrates what the DPC and ComReg failed to achieve: full compliance with their own standards.

Conclusion

bfdi.bund.de is the ninth zero result in the German series. Germany’s federal data protection regulator implements the principle of minimal data processing on its own site, explicitly declaring its rejection of behavioral tracking. This is not merely technical compliance — it is institutional consistency.

Evidence
Original (audit)
HAR file: de/bfdi-bund-de-2026-05-29.har
SHA-256: 2dc0b56ef1a590efd797cb0ef7f94f933585df2988af33ed144a712b55e5863c
HAR files are stored on EU infrastructure (Proton Drive). SHA-256 is published for integrity verification.