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AI code security: Risks, best practices, and tools 

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AI coding assistants can help you ship faster, but they can also ship vulnerabilities straight into production. Unfortunately, this increase in efficiency has been accompanied by greater security risks. Recent research shows that roughly 25-30% of code created by models like GitHub Copilot contains Common Weakness Enumerations (CWEs). That means AI code security needs to be a priority since AI assistants can introduce vulnerabilities.

The good news? You don’t have to choose between speed and security. With the right processes, tools, and human oversight, you can use the power of AI while maintaining robust security standards across your development pipeline.

What is AI code security, and why does it matter?

AI code security refers to the practices, tools, and processes used to safeguard code written by or with the help of AI coding assistants like GitHub Copilot, Amazon CodeWhisperer, or Tabnine. It matters because AI-generated code—while useful—is not free of security vulnerabilities and other risks that you’re less likely to encounter with manually written code.

This risk isn’t just hypothetical. A recent survey of software engineering leaders revealed that more than half report encountering problems with AI-generated code. According to the same survey, 68% spend more time resolving AI-related security vulnerabilities. An astonishing 92% said that AI tools are increasing the amount of low-quality code that needs to be debugged.

Every line of AI-generated code should be treated as potentially dangerous until it’s been thoroughly reviewed, tested, and validated against your security features and coding standards. This means applying the same secure coding practices you’d use for human-written code, plus additional safeguards for AI content.

The stakes are particularly high for industries like fintech, healthcare, and government sectors, where sensitive data and privacy concerns demand strict compliance. A single SQL injection vulnerability or exposed API keys in AI-generated code could lead to data breaches, fines, and reputational damage.

Unique risks of AI-generated code

AI-driven development introduces security risks you wouldn’t encounter with manual code creation. Understanding these unique security risks is important so your team can implement effective digital security solutions.

Hallucinated code and phantom dependencies

AI models may sometimes create code that references functions, APIs, or libraries that don’t actually exist, called hallucinations. These fictional references can create dependencies on nonexistent packages, opening the door to package confusion attacks wherein bad actors publish fake packages with similar names.

One study found that roughly one-fifth of AI-generated code dependencies are non-existent, creating significant supply chain security risks. Blindly installing these suggested packages may inadvertently introduce malware into your applications, so your organization must develop processes to test the secure application of every line of code your team deploys.

Inconsistent secure coding patterns

Manual code development tends to follow established patterns with built-in security checks. In contrast, AI models generate code based on potentially flawed training data, including secure and insecure code. 

AI assistants may act inconsistently, suggesting proper user input validation in one context but skipping it in another. This may result from the LLM’s internal processes or from how you phrase your prompt. Unfortunately, coders may not recognize how often this occurs. 

A recent study found that coders who used an AI assistant wrote significantly less secure code than those who did not use the assistant. Even though they created less secure coding, these participants believed their code was actually more secure than the manual creation group.

It’s important that you never assume your AI-generated code was created using industry-recognized best practices. Without proper review, vulnerabilities like SQL injection, cross-site scripting (XSS), and insecure deserialization can slip through.

Legacy vulnerabilities and outdated practices

AI models trained using older codebases may suggest outdated dependencies or coding patterns that no longer follow best practices. This includes recommending deprecated libraries with known vulnerabilities, outdated cryptographic algorithms, or authentication methods that no longer meet security standards.

Financial services companies face particular risks in this realm. That’s because AI might suggest legacy authentication patterns that don’t meet modern Open Worldwide Application Security Project (OWASP) guidelines or secure financial applications.

Lack of business context awareness

One major downside to AI coding assistants is that they don’t understand your specific threat model, compliance requirements, or business logic constraints. That means these AI helpers can’t differentiate between code that handles sensitive information and public data, which means proper security controls may not be applied where appropriate.

Understanding and mitigating this limitation is essential for healthcare organizations handling protected health information (PHI) or government agencies working with classified data.

Developer overconfidence

Human oversight failure remains a risk worthy of particular attention. Developers may be lulled into a false sense of security after encountering clean, well-documented AI-generated code. Previous positive experiences may lead developers to skip all too necessary testing, which may reveal problems in later coding iterations. 

So, how can you keep these risks in check? The answer lies in adopting layered, proactive security strategies.

Best practices for securing AI-generated code

The best way to create secure AI-generated code is to take a multi-layered approach that combines automated tools, manual reviews, and process improvements across your development lifecycle.

 Ignoring these best practices can lead to costly and unnecessary efficiency problems for your organization. For example, one CTO reported an outage every six months at his company due to poorly reviewed code.

Code review and testing

Every line of AI-generated code must undergo the same rigorous review as an equivalent piece of human-written code. This entails examining the code’s output and processes involved in achieving a given outcome.

To start, you should begin with a manual review focused on logic and intent. Train your developers to look for common AI-generated vulnerabilities, such as missing input validation, improper error handling, and insecure API key management. Create security checklists specific to your AI tools and coding patterns.

Complement manual reviews with automated debugging using Static Application Security Testing (SAST) tools. Kiuwan’s SAST solution can identify security vulnerabilities in AI-generated code as soon as it’s written, catching issues like hardcoded secrets, SQL injection vulnerabilities, and insecure cryptographic implementations.

It is also important to include dynamic testing when reviewing code for potential security problems. AI-generated code may pass static analysis but fail under real-world conditions. Security testing that validates input handling, authentication flows, and data processing logic can prevent costly errors.

Dependency hygiene

Although AI assistants often suggest popular libraries and frameworks, this popularity doesn’t guarantee security. A strict dependency management system can help you catch vulnerable or nonexistent packages before they enter your codebase.

Consider using Software Composition Analysis (SCA) tools to scan AI-suggested libraries for known vulnerabilities automatically. For example, Kiuwan’s SCA capabilities help you maintain a clean Software Bill of Materials (SBOM) by identifying vulnerable dependencies and providing Autofix suggestions for safer alternatives.

Creating policies that prevent dependencies with high-severity vulnerabilities is also a good idea. Maintaining an approved list of vetted libraries for your AI tools can help avoid this problem if you work in a highly regulated industry like banking or healthcare.

Secure coding standards

To ensure secure coding standards are followed, your organization should enforce consistent security standards that apply to all code, regardless of how it’s written. This means implementing OWASP Top 10 protections, following Computer Emergency Response Team (CERT) secure coding guidelines, and maintaining your organization’s specific security policies.

Teach your developers how to prompt AI tools securely. Instead of asking for “user login code,” specify requirements like “user login code with input validation, secure password hashing, and protection against brute force attacks.” More specific prompts can help protect against insecure code.

Implement Security-as-Code policies that automatically enforce standards like proper user input validation, secure output encoding, and sensitive data handling. Adopting tools like Kiuwan can help your organization block non-compliant code from entering your main branches, ensuring consistent security regardless of the code source.

Complexity management

Managing AI-generated code can be difficult because AI code assistant tools often use abstract patterns that are difficult to audit. To get around this issue, be on the lookout for overly clever solutions that introduce unnecessary complexity.

Steps to manage the complexity of your AI-generated code include flagging code with excessive abstraction, deeply nested logic branches, or helper functions that don’t have clear documentation. It’s a good idea to establish complexity thresholds. Prompting an additional review for AI-generated code that exceeds these thresholds is a great way to protect your organization from insecure code.

How to integrate AI code security into your SDLC

Securing AI-generated code requires integration across every phase of your development lifecycle. Here’s how to embed AI code security into each SDLC stage:

Planning

Establish clear policies for using AI tools before you start. Compose prompt guidelines to help you create secure code, specify which AI tools are acceptable for use by project type, and create security requirements for AI-generated code. For government and defense contractors, this includes ensuring AI tools comply with relevant security clearance and data privacy requirements.

Development

Train developers to write security-focused prompts and tag all AI-generated code for traceability. Implement pre-commit hooks that automatically scan code with SAST tools before it enters your repository. Using a tool like Kiuwan’s IDE integrations can help you catch vulnerabilities as you write code by providing immediate feedback on security solution violations.

Testing

Run comprehensive security tests on all AI-generated code, including SAST, SCA, and dynamic application security testing (DAST). Include test cases for common AI vulnerabilities like SQL injection, insecure deserialization, and sensitive information exposure. Automated testing should validate the functionality and security of AI-generated components.

Deployment

Use Continuous Integration and Continuous Delivery/Deployment (CI/CD) gates to prevent insecure AI-generated code from reaching production. Implement policy-as-code that automatically blocks deployments containing high-severity vulnerabilities or non-compliant code patterns. This is especially critical for e-commerce and telecommunications companies handling customer data at scale.

Monitoring

Maintain audit trails of all AI-generated code and monitor for security incidents related to AI-generated vulnerabilities. Log which code was AI-generated, the tools used, and the review process. This information security tracking helps identify patterns and improve your AI security practices.

How security tools help safeguard AI-assisted development

Automated scanning and enforcement should start the moment AI creates code. Tools like Kiuwan can integrate directly into your development environment. Kiuwan scans AI-generated code as it’s written. This real-time process enables flagging high-risk issues like hardcoded secrets, missing input validation, and logic flaws in real time. 

You may find this particularly valuable for AI agents and automated development pipelines with limited human oversight. These automated tools can quickly and effectively uncover vulnerabilities that would be time-consuming to identify through manual review alone.

Policy enforcement at scale becomes ever more important as AI adoption grows across development teams. Your security leaders need tools that consistently enforce OWASP, CERT, and internal secure coding policies across all AI-generated code. 

Using Kiuwan’s policy engine lets you define custom rules specific to your AI use patterns, and it automatically blocks non-compliant code from entering production branches.

For regulated industries like healthcare and financial services, this automated policy enforcement helps maintain compliance with standards like the Health Insurance Portability and Accountability Act (HIPAA), Payment Card Industry Data Security Standard (PCI DSS), and other industry-specific information security requirements.

Audit trails and traceability provide the documentation needed for compliance and incident response. When security platform tools track which code was AI-generated, what tools were used, and how it was reviewed, security leaders can quickly identify the scope of potential vulnerabilities and implement targeted fixes.

Leverage AI-assisted development without the usual risks

AI-generated code can improve efficiency and code quality, but you must maintain vigilance against potential security problems. To keep your organization safe, treat AI-written code as dangerous until it’s been reviewed, scanned, and tested.

To prevent these vulnerabilities from surfacing, embed secure coding practices early in your development lifecycle, maintain strict dependency management, and use human oversight and automated tools for layered protection.

Security tools like Kiuwan help development teams enforce secure coding standards, detect AI-related flaws, and reduce risk at scale. With proper integration into your CI/CD pipeline, these tools can catch vulnerabilities before they reach production. At the same time, they let your team benefit from AI-assisted development.

Request a free demo today to see how Kiuwan can help secure your AI-assisted development pipeline.

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