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AWS Integration Testing for boto with potemkin-decorator

Test Automation for Integrating with External Services Developing test automation code for an interface to an “external” service is always a difficult proposition.  There is a spectrum of techniques for developing reproducible tests against an external service. On one end of the spectrum are “mocking” techniques and on the other far end of the spectrum Read more…

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Thought Experiment: Proposed Complexity Metric for IAM Policy Documents

Code Complexity Metrics When a professional software developer writes code, they measure the complexity of the code they write.  The contrapositive holds true as well that those who don’t measure the complexity of their code are not professional.  There are a variety of code complexity metrics available to the professional developer. The “better” metrics are Read more…

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Custom Rule Distribution Enhancements for cfn_nag

Introduction The cfn_nag tool is a static analysis tool for finding obvious security weaknesses in CloudFormation templates.   The core product includes rules that apply universally across environments and enterprises.  That said, the product supports the development of custom rules to allow enterprise-specific rules for compliance and security controls. For more information on developing custom rules Read more…

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Deployment Pipeline Compliance and Control – a Service-based Approach

Deployment Pipelines – Introduction The software “deployment pipeline” has become a common mechanism in the modern enterprise.  A deployment pipeline is a sequence of automation that produces or deploys a software artifact.  This artifact can take many forms, for example, a programming library, a web application, or even automation to converge infrastructure and security controls.  Read more…

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Finding Security Problems Early in the Development Process of a CloudFormation Template with "cfn-nag"

Continuous Security: Security in the Continuous Delivery Pipeline is a series of articles addressing security concerns and testing in the Continuous Delivery pipeline. This is the second article in the series. CloudFormation Background CloudFormation templates are a great way to provision AWS resources.  They allow an infrastructure developer to declare what resources are to be Read more…