Security Considerations and Best Practices for Securing Serverless PaaS


Published: 04 September 2018 ID: G00351014

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Summary

Developers are embracing serverless computing to extend and integrate cloud applications and lower costs, and as a lower-friction way to develop and deploy code. Security and risk management leaders should adopt best practices to address visibility and control gaps created by serverless computing.

Table of Contents

  • Introduction
  • Analysis
    • Secure Cloud-Native Application Mindset
      • Adopt the Gartner CARTA Strategic Approach
      • Adopt an Immutable Infrastructure Mindset
      • Employ Structured Identity/Entity and Least Privilege Permissions Management
      • Build and Configure Resilient Software
      • Deliver Consistent Workload Protection, Regardless of Form Factor
    • Secure Serverless Foundation
      • Implement IAM SOD for Developers and Separate Development From Production
      • Require Mandatory Granular, Identities and Permissions Management for Serverless Code
      • Require an API Gateway and/or Event Broker to Be Used for Serverless Access
      • Continuously Discover Serverless Code, Assess the Cloud Configuration for Risk and Minimize the Surface Area for Attack
    • Secure Serverless Development
      • Create a Detailed Bill of Materials for All Serverless Code
      • Create a Data Flow Map, and Assess It for Risk and Compliance
      • Scan for Vulnerabilities Automatically/Transparently in Development
      • Use Knowledge Gained From Development to Build Least Privilege Models
      • Extend Code Assurance and Software Integrity Best Practices to Scripts
      • Use Automated Phased Deployments With Rollback
    • Secure Serverless Operation
      • Implement a Default Deny Posture
      • Use the API Gateway/Event Broker and WAF-Like Filtering for Runtime Attack Protection
      • Use Comprehensive Monitoring for Rapid Detection and Response
      • Use Existing Security Controls in and Around Serverless
      • Use Runtime Code Injection and Code Wrappering With Caution
      • Use Visibility and Feedback From Operations to Improve the Security of the Next Version
    • Bottom Line
  • Gartner Recommended Reading
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