This detection rule provides monitoring capabilities for instances where the `bpf_probe_write_user` helper is used within the syslog files of Linux systems. The `bpf_probe_write_user` function is a part of the extended Berkeley Packet Filter (eBPF) framework, which allows BPF programs to write data from kernel space into user space. Although this functionality is intended for legitimate purposes such as debugging and monitoring, its unauthorized use can indicate potential malicious activities, particularly the deployment of eBPF rootkits. The rule is designed to catch unauthorized usage by monitoring syslog entries for messages linked to this specific helper call, allowing security teams to quickly react to possible threats. The detection implementation captures logs from the system's syslog, filtering for events where kernel processes invoke the mentioned helper. The rule instructs security analysts on the necessary investigation steps, including reviewing alert timestamps, correlating them with system activities, and checking user accounts. It offers a detailed examination of potential false positives due to legitimate use cases of the helper, establishing guidelines to document expected patterns and whitelist benign sources. Should suspicious activity be confirmed, the response protocol emphasizes immediate isolation of the affected systems, process termination, and forensic analysis to gauge the extent of the compromise. Remediation strategies include implementing stricter access controls, monitoring to prevent further misuse of the helper, and updating detection capabilities to cover evolving threats.