A German ISP tampered with their DNS – specifically to sabotage my website
17 days ago
- #Transparency
- #DNS Blocking
- #Internet Censorship
- The Clearingstelle Urheberrecht im Internet (CUII) in Germany is a private organization that blocks websites without judicial oversight or transparency.
- A website, cuiiliste.de, was created to track blocked domains as the CUII does not publish its blocklist.
- Germany's major ISPs (Telekom, Vodafone, 1&1, and Telefonica) are part of the CUII and have been involved in blocking domains, sometimes erroneously.
- Telefonica was found blocking its own test domain, blau-sicherheit.info, and later altered its DNS responses to obscure block detection methods.
- Changes in DNS responses by ISPs, like removing notice.cuii.info redirects, make it harder to confirm CUII blocks, reducing transparency.
- The timing of these changes followed media exposure of CUII's mistakes, raising suspicions about intent to obscure future errors.