A security team ran tfsec against their Azure Terraform repository, got 12 findings, fixed them, and merged with confidence. Two weeks later, Microsoft Defender for Cloud flagged a storage account allowing anonymous blob read access - a misconfiguration tfsec's ruleset never caught, on a scanner that, unknown to the team, had already stopped receiving new checks.
That gap is the real story of IaC security scanning heading into 2026: the tool landscape moved, and a comparison written even a year ago is now actively misleading. Before you pick a scanner, you need to know which of these three are still receiving updates at all.
Static IaC scanning reads your .tf files (or a terraform plan output) and checks resource configurations against a ruleset before anything reaches a cloud account. The challenge isn't running a scanner - it's picking one whose maintenance trajectory you can trust for the next two years, not just the next sprint.
Checkov: Palo Alto Networks (Bridgecrew). Actively maintained,
multiple releases per month. v3.2.526 as of Apr 2026.
Broadest framework coverage: TF, CFN, K8s, ARM, [Helm](/glossary/helm-cicd).
Trivy: Aqua Security. Absorbed tfsec's entire rule library.
v0.70.0 as of Apr 2026. Single binary covers IaC,
container images, filesystem, and Kubernetes.
Terrascan: Tenable. ARCHIVED November 20, 2025 - read-only.
Last release v1.19.9, September 2024.
No further updates, CVE fixes, or provider support.
tfsec ./terraform/
trivy config ./terraform/
Every tfsec check ID - for example AVD-AWS-0086 - works unchanged inside Trivy, so existing findings map directly onto any compliance baseline your team already built without manual re-mapping. If your CI configuration currently parses tfsec's specific flag names or output format, Trivy's equivalents differ slightly, so budget a small config update, not a rule rewrite.
iac-scan:
stage: security
image: aquasec/trivy:latest
script:
- trivy config --exit-code 1 --severity HIGH,CRITICAL ./terraform/
terrascan scan -i terraform /path/to/terraform/code
Terrascan's OPA/Rego-based policy engine was genuinely differentiated - reusing the same policy language across Kubernetes admission control and Terraform scanning appealed to teams already invested in Rego. That differentiation doesn't offset an archived repository. Existing Terrascan pipelines will keep functioning, but treat it the way you'd treat any unmaintained dependency: fine short-term, a liability if left in place past 2026.
Coverage and Maintenance:
| Factor |
Checkov |
Trivy |
| Maintenance status |
Active, monthly releases |
Active, monthly releases |
| Framework coverage |
TF, CFN, K8s, ARM, Helm, Serverless |
TF, CFN, K8s, Dockerfile, images |
| Custom policies |
Python or YAML |
Rego (via OPA) |
Coverage and Maintenance, continued:
| Factor |
Terrascan |
Notes |
| Maintenance status |
Archived Nov 2025 (read-only) |
Do not adopt for new pipelines |
| Framework coverage |
TF, CFN, K8s, ARM (frozen) |
No new cloud provider support coming |
| CI/CD integration |
Functional, unmaintained |
Existing pipelines keep working |
trivy config ./terraform/ --severity HIGH,CRITICAL
checkov -d ./terraform/ --compact --quiet
Checkov's Python-based extensibility and multi-framework breadth make it the stronger default when your repo mixes Terraform with Kubernetes manifests or CloudFormation - one CLI, one policy library, one report format across all of it. Trivy earns its place as the fast, pre-commit-friendly gate, especially for teams already running it for container image scanning, since one binary then covers both jobs.
For a new Terraform security pipeline started today, do not adopt Terrascan - its archival means zero future coverage for new AWS, Azure, or GCP resource types, which is a growing blind spot every quarter it stays unpatched. Do not adopt standalone tfsec either; move directly to trivy config since Aqua has stated plainly that new scanning coverage goes to Trivy, not tfsec.
For teams at Indian fintechs under PCI-DSS or RBI data-localization requirements - Razorpay-style payment infrastructure, Zerodha-style brokerage systems - run Checkov in CI as the compliance-mapped gate (its policy library maps cleanly to CIS, NIST, and PCI-DSS controls) and Trivy pre-commit for fast local iteration. The two are complementary, not redundant: one gate catches issues before a developer even opens a pull request, the other catches what the first gate missed.
If your team has existing Terrascan pipelines, plan a migration window rather than an emergency rip-and-replace - the tool still runs, but every sprint spent on it is a sprint not spent closing an already-widening coverage gap against Checkov or Trivy.
INFORMATIONReferences and Further Reading
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