Monitor Security Logs: Failed Login Alerts to Slack

This 5-node n8n workflow monitors security logs for failed login attempts, providing real-time anomaly detection and instant Slack alerts to your team. It runs on a schedule (e.g., every 15 minutes) via a Cron node, fetches recent logs through an HTTP Request node, processes them in a Code node to count failures and unique IPs, checks against a configurable threshold with an If node, and sends detailed Slack alerts if anomalies are detected.

Key benefits include proactive threat detection, reducing response time to potential brute-force attacks, and minimizing manual log review efforts. It's lightweight yet powerful, saving IT teams hours of monitoring while ensuring compliance and security in dynamic environments.

Ideal use cases: Server administrators tracking app logins, DevOps for cloud services, or any system with JSON log APIs. Customize the threshold, log endpoint, and Slack channel for seamless integration into your security stack. Setup is quick with n8n credentials for Slack and your log API.