This detection rule identifies attempts to exploit CVE-2024-27199, a critical vulnerability in the JetBrains TeamCity web server that allows unauthorized access to certain endpoints. The rule monitors HTTP traffic logs processed by Suricata, looking for unusual access patterns to vulnerable paths such as /res/, /update/, and /.well-known/acme-challenge/. Such behavior may indicate that an attacker is bypassing authentication mechanisms to gain access to or modify system settings. If confirmed, this could lead to unauthorized changes, sensitive information disclosure, or the ability to upload malicious certificates, significantly undermining the security of the server. The analytic uses specific conditions coded in the search query to capture relevant traffic and provide comprehensive insights into potential security incidents.