What is IaC scanning?
Infrastructure as code (IaC) scanning analyzes the scripts that automatically provision and configure cloud infrastructure, including Terraform modules, CloudFormation templates, Kubernetes manifests, and YAML-based configuration files. Automated scans identify misconfigurations, compliance violations, and exposed secrets before deployment.
While traditional code scanning targets application logic, IaC scanning secures the infrastructure configurations that define your cloud environments. Checks catch issues such as overpermissive S3 bucket policies, unencrypted databases, and hardcoded API keys in source code before deployments go live.
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What are the key concepts in IaC scanning?
IaC scanning is most effective when it is treated as more than a one-time security check before deployment. A strong approach combines several pillars, enabling teams to continuously reduce risk as infrastructure changes. The following concepts form the foundation of that approach.
Policy as code
Policy as code (PaC) lets teams define security and operational standards directly in the codebase. In practice, PaC rules automatically flag S3 buckets that lack server-side encryption and reject Kubernetes deployments running containers as root. Embedding these checks in a CI/CD pipeline validates infrastructure configurations to enforce compliance with frameworks like SOC 2, PCI DSS, and CIS Benchmarks at every commit, catching policy violations before they reach a live environment.
Security and compliance posture
IaC scanning shapes an organization's security posture by systematically detecting misconfigurations and compliance violations before infrastructure deploys. Scanning replaces separate, periodic audit processes by embedding compliance checks directly into the development lifecycle. Security requirements automatically become part of the definition of “done.”
Drift detection
Drift detection identifies divergence between defined IaC templates and live production assets. For example, it can catch a security group rule that an engineer manually adds in the AWS console, but never adds to Terraform. Monitoring for drift eliminates the false sense of security that static files create while live environments slide into riskier configurations.
CI/CD pipeline integration
IaC scanning delivers the most value when it runs automatically within the build process. Integrating scans into version control systems and tools such as GitHub Actions, GitLab, and Jenkins means that every pull request triggers a scan. Developers get immediate, early feedback before code merges, reducing the window between writing a misconfiguration and catching it.
Remediation guidance
Effective IaC scanners deliver actionable remediation guidance alongside each finding. They point to the affected IaC file, the specific line of infrastructure code, and a suggested fix. Developers resolve security issues directly, avoiding the need to escalate every scan result to a security engineer.
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The IaC scanning process
Effective IaC security scanning follows a systematic six-stage lifecycle, where each stage builds on the last to create a continuous, integrated security workflow. Understanding how each stage works helps teams embed scanning meaningfully into CI/CD pipelines, moving beyond treating it as a checkbox at the end of the development process.
| Step | Description |
|---|---|
| 1. Initialization | Selecting appropriate policies to scan against sets the standard for security and compliance from the start, aligning your IaC configuration against regulations and best practices. |
| 2. Integration | Integrating IaC scanning into version control systems and CI/CD pipelines ensures scans run automatically during the build process, providing continuous oversight before infrastructure reaches production. |
| 3. Execution | Scanning tools assess IaC files against predefined rules, identifying security misconfigurations, policy violations, and compliance issues that pose risks to infrastructure integrity. |
| 4. Review | Reviewing scan results closely helps teams understand the context of each finding and prioritize issues by severity, so the most critical vulnerabilities receive attention first. |
| 5. Remediation | Remediation involves taking targeted steps to address identified vulnerabilities—modifying IaC templates directly or incorporating modular, verified code snippets that meet your security standards. |
| 6. Feedback loop | A feedback loop empowers developers to refine IaC scanning policies over time, driving continuous improvement based on historical scan results and emerging threats. |
What are the top features to look for in IaC scanning tools?
IaC scanning is most useful when it helps teams catch misconfigurations early, enforce security standards consistently, and fix the issues that matter most before deployment. The right IaC scanning tool should do more than scan Terraform. It should support multiple IaC formats, fit naturally into developer workflows, enforce custom policies and compliance requirements, and provide enough context to guide remediation.
Those capabilities matter even more in complex cloud environments, where unified platforms like Wiz can connect findings across code, cloud, and runtime instead of leaving teams to piece together point tools.
Here are the top features to prioritize:
1. Multi-format support and cloud provider coverage
Most teams manage infrastructure across multiple cloud providers and IaC frameworks, so a scanner should support more than Terraform alone. Look for coverage across Terraform, AWS CloudFormation, Kubernetes manifests, Azure Resource Manager templates, and YAML-based configuration files in a single workflow. Otherwise, teams can end up juggling multiple scanners, policy languages, and output formats, which creates visibility gaps across environments.
Checkov and KICS show why broad format support matters, especially for teams running heterogeneous infrastructure. Wiz builds on that foundation by scanning multiple infrastructure definitions in a single place and connecting findings to the broader cloud environment, helping teams apply security policies more consistently across providers and deployment models.
2. CI/CD pipeline integration and developer workflow
IaC scanning is most effective when it fits naturally into the tools developers already use. Look for scanners that integrate with GitHub Actions, GitLab, and Jenkins, and pull request workflows so findings appear in context, when teams can fix them quickly. When scanning is embedded into CI/CD, it becomes part of the development lifecycle instead of a separate security step that adds friction.
Terrascan and TFLint are good examples of tools that support early feedback in developer workflows. Wiz extends that approach by embedding IaC security into those workflows while preserving the broader context security teams need, supporting a guardrails-not-gates model that helps teams move quickly without losing visibility.
$ terrascan scan
By default Terrascan will output its findings in human friendly format:
Violation Details -
Description : S3 bucket Access is allowed to all AWS Account Users.
File : modules/storage/main.tf
Line : 124
Severity : HIGH
...3. Policy customization and compliance frameworks
Prebuilt rules are useful, but most organizations also need to enforce internal standards alongside frameworks like CIS, PCI DSS, SOC 2, and NIST. Strong IaC scanning tools should support both built-in checks and custom policies so teams can define requirements once and validate them automatically during development, rather than relying on manual review later.
Tools like tfsec highlight the value of policy coverage for Terraform-focused teams. Wiz takes that further by applying a unified policy model across code and cloud environments, which helps reduce the gap between what developers intended, what security approved, and what ultimately runs in production.
4. Risk prioritization and remediation guidance
A long list of findings without context is just noise. Effective IaC scanning tools should show the affected file, the exact line of code, the violated policy, and a clear remediation path so developers can act quickly. Just as important, they should help teams understand which issues actually increase exposure, not just which ones triggered a rule.
Many point tools provide severity ratings, but severity alone does not always reflect real risk. Wiz stands out by correlating IaC findings with context across code, cloud, and runtime environments, helping teams focus first on the issues most likely to affect live exposure and attack paths.
Common IaC security vulnerabilities and misconfigurations
IaC scanning helps teams identify a predictable set of security vulnerabilities that appear repeatedly across cloud environments. Understanding these categories helps security engineers and DevOps teams focus scanning policies and remediation efforts where the risk is highest.
Catching these issues earlier makes it easier to reduce risk before misconfigurations lead to larger security or compliance problems.
1. Cloud resource misconfigurations
Cloud resource misconfigurations rank among the most common and consequential IaC security risks, with IaC templates serving as their frequent source. In practice, these misconfigurations include overpermissive security groups that allow unrestricted inbound traffic, storage buckets left publicly readable, unencrypted databases, and disabled logging on critical services. Omitting encrypted = true on a Terraform RDS instance resource block, for example, deploys an unencrypted database unless a scanning policy catches it first. The risk compounds at scale, where a single flawed module referenced across multiple environments spreads the same vulnerability into every infrastructure deployment using it.
2. Access control and permission issues
Overpermissive IAM roles and policies represent a persistent IaC security risk. Infrastructure code that grants wildcard actions on wildcard resources, or that creates IAM roles with administrator-level access as a shortcut, expands the blast radius within cloud environments. IaC scanning tools flag these patterns against least-privilege security policies, allowing teams to scope permissions correctly before deployment rather than discovering overpermissive roles during a security review. Kubernetes manifests carry similar risks, where configuring containers to run as root, setting pods with privileged: true access, and binding service accounts to cluster-admin roles all compromise cluster integrity.
3. Secrets and credential exposure
Hardcoded secrets in source code and IaC files are among the most direct paths to a cloud compromise. Developers accidentally leak API keys, database passwords, and cloud provider credentials within Terraform variable files or CloudFormation templates when committing to repositories—including public ones.
Wiz's State of Code Security Report confirms that cloud keys commonly appear in both public and private repositories, making secrets detection a non-negotiable component of any IaC security scanning workflow. The report finds that 86% of organizations have at least one private repo with secrets, while 61% have at least one public repo with secrets. Effective scanning tools detect hardcoded secrets alongside misconfigurations to prioritize credential exposure as a first-class finding rather than an afterthought.
How to implement IaC scanning in your DevSecOps workflow
A strong IaC scanning workflow should feel like part of development, not a separate security review. The goal is to catch misconfigurations early, enforce policies consistently, and connect code-level findings to real cloud risk as infrastructure moves toward production. To operationalize that process, teams can implement IaC scanning in four practical stages.
Stage 1. Integrate IaC scanning into developer environments
Start by integrating IaC scanning into the developer environments where infrastructure code is created, such as IDEs and local workflows. Inline feedback helps developers catch misconfigurations before code reaches a shared repository, reducing rework and keeping security findings tied to the change that introduced them.
Stage 2. Run scans in pull requests and CI/CD pipelines
Next, make IaC scanning a standard part of pull request reviews and CI/CD pipelines. This creates a consistent enforcement point for every change, so teams can catch policy violations before deployment instead of waiting for post-deployment findings. Tools that surface results as review comments, CLI output, or merge checks help teams act quickly without leaving their normal workflow.
Stage 3. Enforce policies with version-controlled guardrails
As scanning matures, treat IaC policies and frameworks as living artifacts that evolve alongside infrastructure code. Built-in rules are useful, but teams should also version-control custom policies to reflect internal standards, compliance requirements, and changes in cloud architecture. This helps security scale with development without relying on one-off manual reviews.
Stage 4. Connect code findings to cloud and runtime context
Finally, close the loop by connecting code-level findings to the running cloud environment. That added context helps teams see where deployed infrastructure has drifted from IaC definitions and which issues create meaningful exposure in production.
Wiz Code supports this approach by integrating into IDEs and pull requests, then correlating IaC findings with broader cloud and runtime context so teams can prioritize remediation more effectively.
Securing infrastructure from code to cloud with Wiz
IaC scanning helps teams catch misconfigurations before they become production risks. As cloud environments grow more complex, early visibility is essential for keeping security aligned with development.
Wiz unifies IaC scanning across Terraform, AWS CloudFormation, Azure Resource Manager templates, and Kubernetes manifests, applying a single policy model across code and cloud environments. That helps teams reduce silos, enforce standards consistently, and catch issues earlier. Wiz Code adds cloud and runtime context to IaC findings, so teams can prioritize the issues that matter most in live environments and remediate them faster.
Book a demo to see how Wiz Code helps secure infrastructure from code to cloud. And explore the IaC Security Best Practices Cheat Sheet for tips on securing IaC and cloud operations.
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