Security expert Lily Chau discusses AWS Lambda for cloud security, auto-remediation, IAM roles, and challenges with CSPM. They cover cultural shifts, high-impact playbooks, and monitoring CloudTrail logs for security. Also, they talk about preventing subdomain takeovers, using Terraform for security, and a favorite restaurant in San Francisco.
Utilize IAM roles for read-only security auditing and tagging non-compliant instances for effective tracking without relying on databases.
Implement custom auto remediation Lambda functions to proactively address security risks beyond CSPM and CNAB tools in AWS cloud environments.
Deep dives
IAM Roles for Read-Only Security Auditor and Security Tagger
Two key IAM roles are deployed in each AWS account: the read-only security auditor role for read-only configurations and the security tagger role for tagging instances that are non-compliant. Tagging instances is crucial for tracking non-compliance economically without database use. The approach emphasizes tagging instances as non-compliant or remediated.
Auto-Remediation Beyond CSPM and CNAB Tools
Auto-remediation offers automatic solutions for non-compliant issues in the cloud beyond the capabilities of Cloud Security Posture Management (CSPM) and Cloud-Native Application Bundles (CNAB) tools. Custom auto remediation lambda functions, like those developed by Lily from Roku, provide a proactive approach to handling non-compliance and security challenges in the cloud.
Lateral Movement Detection and Remediation
Detecting lateral movement involves creating IAM mappings to track permissions between principals and resources. By chaining IAM roles with escalating permissions, organizations can identify and remediate potential security risks across their AWS accounts. Leveraging CloudTrail logs and IAM access analyzers assists in identifying and restricting unauthorized or malicious actions, ensuring a secure cloud environment.
How to secure AWS cloud using AWS Lambda? We spoke to Lily Chau from Roku at BSidesSF about her experience and innovative approach to tackling security issues in AWS environments. From deploying IAM roles to creating impactful playbooks with AWS Lambda, Lily shared her take on automating remediation processes. We spoke about the challenges of managing cloud security with tools like CSPM and CNAPP, and how Lily and her team took a different approach that goes beyond traditional methods to achieve real-time remediation.