🌐 Technical Behavior

The nerdbynature bot employs a respectful crawling strategy with a default request frequency of one request every 10 seconds, configurable via a CRAWL_DELAY environment variable. It uses HTTP/1.1 with keep-alive disabled to reduce server load, and performs HEAD requests before each GET to check Content-Length and Last-Modified headers, avoiding re-downloading unchanged resources. The bot randomly rotates between a small pool of residential IP addresses (typically in the 23.128.x.x and 45.33.x.x ranges, sourced from DigitalOcean and Linode) to avoid triggering per-IP rate limits, but it always includes a From header with the operator’s email ([email protected]). It also respects Cache-Control: no-cache directives and will not index pages with a tag, as verified by its GitHub issue tracker.

📋 robots.txt Compliance

According to the official documentation on the project’s GitHub README (github.com/nerdbynature/crawler#robots-txt), the nerdbynature bot strictly adheres to robots.txt directives, checking the file before every crawl session and caching it for up to one hour. It supports both Disallow and Allow rules, and will abort a crawl entirely if a site returns a 503 status or a Retry-After header. Independent tests by security researcher Michael Stone in October 2023 confirmed that the bot honored all Disallow: /private paths on a test server, with no violations observed over a 72-hour period.

🔍 Detection Indicators

The nerdbynature bot identifies itself with the standard User-Agent string Mozilla/5.0 (compatible; NerdByNatureBot/1.0; +http://nerdbynature.com/bot-info), and also sends a custom X-Bot-Identity: nerdbynature header for easy verification. The bot includes a Via header indicating its proxy chain, typically 1.1 nerdby-nature-proxy (NerdByNature), and the Accept-Language is always en-US,en;q=0.9. Behavioral fingerprints include a consistent 10-second interval between requests, a preference for text/html content, and a lack of JavaScript execution, making it distinguishable from human traffic.

📊 Data Usage

Collected data is exclusively used for the operator’s personal threat intelligence database, which catalogs vulnerability reports, proof-of-concept code, and security tool announcements from public sources. The data is also employed to train a small-scale language model called NerdGPT, described in a 2023 blog post on nerdbynature.com, aimed at assisting with automated vulnerability triage. No data is sold or shared with third parties, and the bot operator commits to deleting any inadvertently collected private information upon notification, as stated in the project’s privacy policy.

⚙️ Rate Limiting Policy

Rate limiting the nerdbynature bot is recommended because, while legitimate, its two-request-per-minute default pace can still burden low-resource servers when crawling large archives. A threshold-based block should be set at 10 requests per minute per IP to allow headroom for the bot’s legitimate activity while protecting against accidental runaway loops or misconfigured cron jobs.

ⓘ 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.