A "proxy grabber" is a specialized script or software designed to crawl the web, identifying and aggregating publicly available proxy servers. These tools typically scan "proxy lists" posted on forums or specialized websites, testing each IP address for speed, anonymity level, and protocol (such as HTTP, SOCKS4, or SOCKS5). From a technical standpoint, this represents a basic form of web scraping and automated network testing. Security and Ethical Implications The use of harvested proxies is a double-edged sword: