Real-time monitoring in Odoo can be set up by combining internal logs, server controls, and security alerts. Start by enabling PostgreSQL and Odoo query logs to track unusual database calls. Use failed login tracking and session limits to detect brute-force attempts. Configure intrusion detection tools like Fail2ban or WAF rules for your server and set alerts for blocked IPs or repeated access failures. Automate backups so you can restore fast if something is compromised.