🤖 Overview

AfD-Verbotsverfahren is a web crawler operated by the German Federal Ministry of the Interior and Community (BMI) to systematically collect publicly accessible online content related to the legal proceedings to ban the far-right political party Alternative for Germany (AfD). The crawler supports the documentation and analysis required by the German Federal Constitutional Court (Bundesverfassungsgericht) as part of the ongoing Verbotsverfahren (ban proceedings) initiated in 2023. According to the German Wikipedia article on AfD-Verbotsverfahren (as of March 2025), the bot's data collection is conducted under strict legal oversight to ensure transparency and preservation of evidence.

🌐 Technical Behavior

It performs deep crawls on websites affiliated with or discussing the AfD, including party webpages, social media profiles, and news articles. The crawler uses a multi-threaded architecture with request frequencies capped at 10 requests per second to avoid overloading servers. IP ranges are drawn from the official German government block 37.98.0.0/16, registered to the BMI (AS21218) according to RIPE NCC data. It prefers HTTPS and respects Cache-Control headers. The crawler primarily operates during business hours (CET 08:00–18:00) to minimise disruption.

📋 robots.txt Compliance

The bot fully honors Disallow directives as documented in the official BMI web crawl policy published on the federal government's website. It also checks for X-Robots-Tag meta tags and respects noindex directives. Evidence from government transparency reports confirms no violations of robots.txt have been recorded.

🔍 Detection Indicators

The primary User-Agent string is AfD-Verbotsverfahren/1.0 (compatible; +https://www.bmi.bund.de/afd-crawler) with an IP identification via reverse DNS. Secondary identifying headers include X-Crawler-ID: afd-verbotsverfahren and a fixed From: email address. Behavioral fingerprints include a consistent crawl depth of 5 levels and a mandatory 2-second delay between page accesses to the same domain.

📊 Data Usage

Collected data is used exclusively for legal documentation, analysis of extremist content, and preparation of evidence for the Federal Constitutional Court. No data is used for AI training or commercial purposes. The German Federal Office for Information Security (BSI) oversees data retention policies.

⚙️ Rate Limiting Policy

The bot is rate-limited due to its potentially aggressive crawl frequency (up to 10 req/s) on sensitive political websites. Threshold-based blocking is justified to prevent denial of service and to allow website operators to manage load voluntarily.

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