This detection rule identifies instances where a Chromium-based browser is executed in headless mode with a command line that includes specific URLs pointing to mockbin.org or similar services. The headless execution implies the browser runs without a user interface, which is often used for automation purposes but can also be indicative of malicious activity, such as data exfiltration or automated scraping. This rule targets common Chromium-based browsers like Brave, Chrome, Edge, Opera, and Vivaldi, flagged by their executable names. By monitoring command-line arguments for the presence of both the headless flag and designated URLs, the rule seeks to catch potentially harmful operations that could signify a data theft attempt.