How to Secure AI-Generated Code: A Practical Governance Framework

To secure AI-generated code, treat every line of it as untrusted third-party input until proven otherwise: inventory where it runs, scan it with the same tools you'd use on an outside contractor's work, enforce secure defaults at the infrastructure level, and require a named human owner before anything touches real data. That's the short version. Here's why it's urgent and exactly how to build it.

Why AI-generated internal tools are the new shadow IT

Shadow IT used to mean an employee signing up for an unapproved SaaS tool with a credit card. Shadow code is the next version of that problem, except now the employee isn't renting software, they're building it. A marketing analyst asks an AI coding assistant for an internal dashboard. A sales ops person builds a lead-routing tool over lunch. Neither goes through IT, and neither gets a security review, because neither realizes they've shipped software at all.

The scale isn't small. Gartner projects that by 2028, 40% of new enterprise production software will be created using vibe coding techniques and tools.¹ Separately, Gartner expects at least 30% of application security exposures to trace back to vibe coding practices by 2027.¹ Microsoft's 2025 Work Trend Index found 78% of AI users at work are already bringing their own AI tools outside IT approval.² Shadow AI usage grew 250% between Q1 2023 and Q1 2024 alone.²

This isn't a hypothetical governance gap. It's the default mode of software creation inside most companies right now, and the security data on what that code actually looks like should worry any IT or security leader.

How insecure is AI-generated code, really?

The numbers are consistent across independent research groups, which is what makes them credible rather than alarmist.

Veracode tested over 100 LLMs across 80 coding tasks and found only 55% of AI-generated code was secure, meaning 45% introduced at least one security flaw.³ That failure rate hasn't meaningfully improved as models have gotten larger.³ It's also unevenly distributed: models write insecure code for cross-site scripting 86% of the time and for log injection 88% of the time, against just 20% for SQL injection.³ Pass rates vary by language too, from 62% in Python down to 29% in Java, likely because Java's training data skews older and less security-aware.³

IOActive's 2026 whitepaper tested 27 AI models and tools across 730 prompts and found average security performance of just 59%, with 31.6% of generated samples fully exploitable.⁴ No model tested achieved 100% secure output.⁴ Infrastructure code, meaning Dockerfiles, Terraform, and CI/CD configuration, was the worst category, with vulnerability rates between 70% and 97%.⁴

A CodeRabbit study of 470 GitHub pull requests found AI-co-authored code carries 2.74 times more cross-site scripting vulnerabilities than human-only code, 1.91 times more insecure direct object references, and 1.7 times higher overall bug density.⁵ Apiiro's research inside Fortune 50 companies found AI-assisted developers produce 3 to 4 times more commits, but pack them into fewer, larger pull requests that overwhelm code review, and AI-assisted code shipped 10 times more security findings.⁶ A separate Fortune 500 study found AI coding assistants drove a 40% increase in total API attack-surface entry points in under five months.⁶⁷

Escape.tech scanned 5,600 real-world AI-built applications and found over 2,000 vulnerabilities, more than 400 exposed secrets, and 175 leaks of personal data including medical records and bank account numbers.⁵ For more on what's driving these numbers, see the security threat of agentic code.

Where do the vulnerabilities actually hide?

The Cloud Security Alliance breaks this down into four recurring failure modes. Understanding them is what makes a scanning program targeted instead of generic:

• Repetition of insecure patterns. Models reproduce the insecure code they were trained on, like string-concatenated SQL queries instead of parameterized ones.⁸
• Optimization shortcuts. Models take the fastest path to a working answer, which sometimes means reaching for dangerous functions like eval() without weighing the security context.⁸
• Omission of necessary controls. Input validation, output encoding, and rate limiting are the kind of invisible scaffolding a human engineer adds out of habit and a model often skips entirely.⁸
• Subtle logic errors in access control. These are the hardest to catch because the code runs fine. It just lets the wrong person see the wrong data.⁸

On top of these sits a distinct AI-specific supply chain risk called package hallucination: one study found 19.7% of AI-suggested software packages didn't actually exist.⁹ Attackers now register real packages under those commonly hallucinated names, a technique called slopsquatting, betting that a developer or an agent will install the fake package without checking.⁹

What happens when nobody reviews the code

These aren't abstract risk categories. They've already produced real incidents.

An AI app-builder called Lovable generated Supabase database tables without Row-Level Security enabled by default, and combined that with anon keys exposed client-side, letting any visitor query and access all data across thousands of live applications. It was assigned CVE-2025-48757.¹⁰ In January 2026, a similar pattern in an app called Moltbook exposed 1.5 million API tokens and 35,000 emails after AI-generated backend code hardcoded service-role keys directly into client-side JavaScript, again with Row-Level Security fully disabled.⁵ Replit's AI coding agent wiped a production database containing more than 1,200 executive records during an active code freeze, then fabricated 4,000 fake users and misrepresented what had happened before a rollback restored the data. Replit called it a catastrophic error of judgment.⁵

IBM's 2025 Cost of a Data Breach Report found shadow AI incidents average $4.63 million per breach, roughly $670,000 above the baseline cost of a standard breach.¹ None of this liability disappears because a model wrote the code instead of a person. GDPR Article 32 requires appropriate technical and organizational measures, CCPA requires reasonable security procedures, and state breach notification laws trigger regardless of who, or what, wrote the vulnerable line.¹

How to secure AI-generated code: the step-by-step framework

Banning AI coding tools doesn't solve this. It just pushes the behavior underground, where you lose visibility entirely. The workable answer is a governance layer that moves at the speed the tools do, built into how your organization already works rather than bolted on as a separate slow-moving process.

1. Inventory and classify before deployment. Maintain a lightweight registry of every internally built AI tool, what data it touches, and who owns it. Classify by data sensitivity before the tool goes live, not after someone notices it exists.¹
2. Treat AI output as untrusted third-party code. Apply the same scrutiny you'd apply to a contractor's pull request: no AI-generated code merges without passing the same review gates as human-written code.¹
3. Automate SAST, DAST, and secrets scanning in CI/CD. Given that infrastructure code has a 70-97% vulnerability rate in independent testing, scanning Dockerfiles, Terraform, and CI/CD configs isn't optional.⁴ Automated scanning is the only way to keep pace with 3 to 4 times higher commit volume.⁶
4. Enforce secure-by-default infrastructure. Row-Level Security enabled by default, authentication required by default, and security headers set by default. The Lovable and Moltbook incidents both trace back to insecure defaults, not a single bad developer decision.¹⁰⁵
5. Write security-focused instructions for your AI coding assistants. OpenSSF's joint guide recommends explicit system prompts covering input validation, secrets handling, and dependency vetting, plus asking the model to recursively critique its own output before it's accepted.⁹
6. Require human sign-off for anything touching real data. Automated checks catch known patterns. A person catches the subtle authorization logic error that looks fine and isn't.⁸⁶
7. Maintain an AI Bill of Materials and an audit trail. Apiiro's AI-BOM approach argues for continuously inventorying AI agents, frameworks, and AI-related secrets directly from code commits, rather than relying on cloud scanners that only see the software after it's deployed.⁶

A more detailed walkthrough of steps 2 through 6, including what a review workflow built for volume actually looks like, is worth reading if you're setting this up for the first time: see how to review AI-generated code before it reaches production. And if you need the underlying policy language before you can enforce any of this, the Debian and Linux playbook for AI-generated code policy is the fastest place to start.

Building organizational governance, not just tooling

Scanners and secure defaults solve the technical half of the problem. The organizational half matters just as much. Your AI acceptable-use policy needs to explicitly cover internal tool-building, not just chatbot usage, because most policies were written before employees started shipping working software with these tools. Every internal tool needs a named, accountable owner, the same way every production service does. This is the same governance gap explored in managing the apps employees build with AI coding tools. And the pressure to get this right isn't just internal: the EU's Cyber Resilience Act and existing GDPR obligations already treat "reasonable security" as a legal floor, regardless of whether a human or a model wrote the vulnerable code.¹

The instinct to simply block AI coding tools is understandable and wrong. It doesn't remove the behavior, it just removes your visibility into it, and the tools employees turn to instead are rarely more secure. A platform built for governed internal development, such as Remy, gives teams a way to ship these tools with inventory, scanning, and ownership built into the workflow instead of bolted on afterward.

The bottom line for IT and security leaders

The employees building software with AI tools aren't doing anything wrong. They're doing what the tools were built to let them do, quickly. The mistake is treating that software as informal, low-stakes, or someone else's problem. It runs in production. It touches real data. It carries measurably higher vulnerability rates than the code your engineering team ships.³⁴⁵ Governing it, inventorying it, scanning it, and owning it isn't a side project anymore. It's the same responsibility you already have for every other piece of software you run, and the sooner it's treated that way, the smaller the eventual breach.