This detection rule is designed to identify update check requests made by the Advanced IP/Port Scanner utilities. These tools are often used for discovering devices on a local network, which can potentially be misused by attackers to gather information about network topology and vulnerabilities. The rule triggers when an HTTP request is detected that contains specific elements characteristic of update checks, such as a request to 'checkupdate.php' and the presence of query parameters like 'lng', 'ver', 'beta', 'type', 'rmode', and 'product'. This is pertinent in a threat detection context as legitimate usage of these tools might obscure potential malicious activities. Therefore, the rule is aimed at being a proactive measure to capture potentially unsafe behaviors while allowing for legitimate use cases.