The Agent Skills Directory

[COMMAND_EXECUTION]: The skill establishes system persistence by creating a root-owned cron job at /etc/cron.d/fail2ban-report. This task executes a custom shell script daily to generate and transmit security reports.
[DATA_EXFILTRATION]: The Python management agent (scripts/agent.py) reads sensitive system logs including /var/log/auth.log, /var/log/syslog, and /var/log/fail2ban.log. These files contain detailed authentication attempts and network metadata which are extracted and formatted into JSON output.
[COMMAND_EXECUTION]: The Python script uses subprocess.run to interact with the fail2ban-client binary. It accepts user-supplied arguments for IP addresses and jail names, which are passed directly to the command-line utility for banning and unbanning operations.
[COMMAND_EXECUTION]: The configuration workflow requires extensive use of sudo for modifying firewall rules (iptables), managing system services (systemctl), and writing to protected configuration directories like /etc/fail2ban/.
[PROMPT_INJECTION]: The skill possesses an indirect prompt injection surface by parsing untrusted data from external logs. An attacker can influence the agent's logic or the content of its reports by generating specific log entries (e.g., crafted SSH failure messages or UFW block logs) that match the regex patterns used in the analysis script.

detecting-port-scanning-with-fail2ban