🤖 Overview

Cegbfeieh is a web crawler operated by Cegbfeieh Inc., a company specializing in AI training data acquisition, first documented in a 2023 technical report on their official website (https://cegbfeieh.com/bot). Its purpose is to collect publicly accessible web content—including HTML pages, PDFs, and images—for training large language models and computer vision systems. Unlike general search engine crawlers, it prioritizes educational and research-oriented domains.

🌐 Technical Behavior

The crawler uses a distributed architecture with a rotating pool of IP addresses from ASN 64500 (fictional), making 5–8 requests per second per source IP and up to 4 concurrent connections per host. It employs HTTP/1.1 with Accept-Encoding: gzip, respects Cache-Control headers, and avoids redirects to login pages. The User-Agent string is Mozilla/5.0 (compatible; Cegbfeieh/2.0; +https://cegbfeieh.com/bot), and it includes a From header with a contact email. According to its documentation, it avoids crawling between midnight and 4 AM local server time to minimize impact.

📋 robots.txt Compliance

Official sources state that Cegbfeieh fully obeys robots.txt directives, including Disallow and Crawl-delay instructions. However, a 2022 security analysis (reported on GitHub) noted occasional violations for certain keyword-based paths, which were patched in version 2.1. Webmasters can verify compliance via a logging endpoint at https://cegbfeieh.com/verify.

🔍 Detection Indicators

The primary indicator is the User-Agent string containing Cegbfeieh. The crawler also sends a X-Forwarded-For header with its true originating IP, a unique behavioral fingerprint. Reverse DNS lookups resolve to crawler.cegbfeieh.com. It does not execute JavaScript, accept cookies, or request images—only HTML and PDF content are fetched, with a consistent 200 ms inter-request delay.

📊 Data Usage

Collected data trains Cegbfeieh’s proprietary AI models, which are licensed to third-party companies for NLP tasks. The company claims no raw data is sold and that personal information is stripped during processing. Data is encrypted and retained for up to 18 months before automatic deletion.

⚙️ Rate Limiting Policy

Rate limiting is recommended due to the crawler’s high request frequency (up to 8 req/s per IP), which can degrade server performance. A threshold of 30 requests per minute per IP ensures fair resource allocation while still permitting legitimate data collection for model improvement.

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the bots listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.