A security review that understands the architecture, not just the syntax

In short

On every pull request that changes infrastructure, an AI agent reads the Terraform in context, spots dangerous combinations classic tools miss, explains the risk in a comment and proposes the fix.

Client: Talvane RH
Sector: Payroll software (SaaS)
Size: 200 staff, data on 40,000 employees

100%of infrastructure changes reviewed
−80%security review time
0data leaks from misconfiguration

The context

Talvane RH hosts the payslips of tens of thousands of employees on AWS. Every week, developers change the infrastructure in Terraform. Scanners checked each file in isolation, and the single security expert couldn’t review everything.

The challenge

01
A setting can be fine on its own and dangerous combined with another.
02
IAM rights and bucket policies are hard to review by hand.
03
The review must not slow developers down.
04
The proposed fix must itself pass every company rule.

Our approach

A GitHub Action fires on every Terraform pull request. Checkov and OPA rules check the basics first. An AI agent then builds the graph of the resources involved (buckets, policies, networks, roles) together with the existing state, and looks for exposure paths. It comments on the PR with the risk explained plainly, and pushes a fix commit that passes every check again.

The solution, step by step

01
A pull request
A developer adds a payroll exports bucket.
02
Classic checks
Checkov and OPA: no syntax error, everything looks fine.
03
Context analysis
The agent links the bucket, its policy, the VPC endpoint and the public subnet.
04
The risk, explained
A comment shows how payslips become readable from the public network.
05
The fix, proposed
The agent pushes a corrected commit; every check turns green.

Results

100%of infrastructure PRs reviewed automatically
−80%review time for the security team
37exposures prevented in the first year
< 3 minfor a review comment

What we deliver

GitHub review action on every Terraform PR
Checkov and OPA baseline rules
Context analysis agent (resource graph)
PR comments and fix commits
Dashboard of prevented risks

Technologies

GitHub Actions
Terraform
Checkov
Open Policy Agent
OpenAI API / CodeLlama
AWS

Timeline

6 to 8 weeks

Team

1 DevSecOps engineer, 1 AI engineer

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Illustrative cases: clients and figures are fictional, representative of the solutions we deliver.