Why do we use Amazon GuardDuty Service?

Amazon GuardDuty is a managed threat detection service from AWS that protects accounts, workloads, and data by continuously monitoring for malicious activity and unauthorized behavior. It uses machine learning, anomaly detection, and integrated threat intelligence to analyze data sources like AWS CloudTrail event logs, VPC Flow Logs, and DNS logs.

Key features include:

1. Unauthorized access detection: Identifies unusual API calls and suspicious user behavior.
2. Malicious activity detection: Monitors network traffic for command-and-control communications and known vulnerabilities.
3. Cryptocurrency mining detection: Spots unauthorized resource usage for mining activities.
4. Remote access monitoring: Tracks remote shell access and remote code execution attempts.

GuardDuty generates security findings with detailed information and recommended remediation steps, available in the AWS Management Console. These findings can trigger automated responses through AWS EventBridge and SNS, enhancing real-time threat response. Multiple accounts can be managed, with admins able to add or remove accounts, organize findings, and set suppression and trusted IP lists.

GuardDuty categorizes findings with a naming convention indicating the threat purpose, affected resource type, threat family name, detection mechanism, and artifact involved. It supports various finding types, including EC2, EKS, IAM, Kubernetes audit logs, Lambda, Malware, RDS, and S3 protections. Enabling relevant logs is essential for comprehensive threat monitoring and response