Secure coding in Java with Claude Code
28 Labs
16 Case Studies
Platform
Claude Code, Generative AI, Web
Audience
Java developers using Claude Code
Preparedness
General Java and Web development
Standards and references
OWASP, SEI CERT, CWE and Fortify Taxonomy
Group size
12 participants
Outline
- Coding responsibly with Claude Code
- The OWASP Top Ten from Claude Code's perspective
- Wrap up
What you will learn
- Understanding the essentials of responsible AI
- Getting familiar with essential cyber security concepts
- Understanding Web application security issues
- Detailed analysis of the OWASP Top Ten elements
- Putting Web application security in the context of Java
- Going beyond the low hanging fruits
- Managing vulnerabilities in third party components
- Input validation approaches and principles
- All this put into the context of Claude Code
Description
Claude Code is transforming the way developers interact with software projects, enabling AI-assisted development directly within the development environment. Its ability to understand codebases, modify files, run commands, and assist with complex development tasks can significantly improve developer productivity. At the same time, giving an AI tool a deeper role in the development process introduces important security and quality considerations, requiring developers to use it responsibly.
This course provides a comprehensive insight into the responsible use of Claude Code for secure software development. Participants explore how AI-assisted development can affect security-critical areas such as authentication, authorization, cryptography, input validation, and secure handling of sensitive data. The curriculum also examines how Claude Code approaches secure coding practices and common vulnerabilities from the OWASP Top Ten, including path traversal, SQL injection, and cross-site scripting.
Through hands-on exercises and experimentation with Claude Code, participants gain a practical understanding of both its capabilities and limitations. They learn how to critically review AI-generated and AI-modified code, identify security weaknesses that may be introduced or overlooked, and use AI assistance without surrendering control over important development and security decisions. Real-world case studies illustrate the potential consequences of insecure AI-assisted development and the dual role of AI as both a powerful development resource and a potential security risk.
By the end of the course, developers will be equipped with the knowledge and practical skills to use Claude Code responsibly throughout the software development lifecycle, taking advantage of AI-assisted development while maintaining appropriate security, code quality, and developer oversight.
Table of contents
- Coding responsibly with Claude Code
- What is security?
- Threat and risk
- Cyber security threat types – the CIA triad
- Consequences of insecure software
- What is responsible AI?
- Security and responsible AI in software development
- The OWASP Top Ten from Claude Code’s perspective
- The OWASP Top Ten 2025
- A01 – Broken Access Control
- Access control basics
- Case study – Broken authn/authz in Apache OFBiz
- Confused deputy
- Insecure direct object reference (IDOR)
- Path traversal
- Case study – RCE via path traversal in Apache OFBiz
- Lab – Insecure Direct Object Reference
- Path traversal best practices
- Lab – Experimenting with path traversal in Claude Code
- Authorization bypass through user-controlled keys
- Case study – Remote takeover of Nexx garage doors and alarms
- Lab – Horizontal authorization
- File upload
- Unrestricted file upload
- Good practices
- Lab – Unrestricted file upload
- Case study – File upload vulnerability in Netflix Genie
- Server-side Request Forgery (SSRF)
- Case study – SSRF in Ivanti Connect Secure
- A02 – Security Misconfiguration
- Configuration principles
- Web security configuration issues
- Content Security Policy
- Fetch directives
- Source allowlisting
- Strict CSP: using nonces and hashes
- CSP best practices
- Cookie security
- Cookie attributes
- Secrets management
- Hard coded passwords
- Best practices
- Lab – Hardcoded password
- XML entities
- DTD and the entities
- Entity expansion
- External Entity Attack (XXE)
- File inclusion with external entities
- Server-Side Request Forgery with external entities
- Lab – External entity attack
- Preventing XXE
- Lab – Prohibiting DTD
- Case study – XXE vulnerability in Ivanti products
- Lab – Experimenting with XXE in Claude Code
- The OWASP Top Ten from Claude Code’s perspective
- A03 – Software Supply Chain Failures
- Using vulnerable components
- Assessing the environment
- Hardening
- Untrusted functionality import
- Supply chain security and the Software Bill of Materials (SBOM)
- SBOM examples
- Case study – The Polyfill.io supply chain attack
- Vulnerability management
- Patch management
- Vulnerability databases
- Lab – Finding vulnerabilities in third-party components
- DevOps, the CI / CD build process and Software Composition Analysis
- Dependency checking in Java
- Lab – Detecting vulnerable components
- Security of AI generated code
- Practical attacks against code generation tools
- Dependency hallucination via generative AI
- Case study – Agentic coding and code security (mid-2025 onward)
- A05 – Injection
- Input validation
- Input validation principles
- Denylists and allowlists
- What to validate – the attack surface
- Where to validate – defense in depth
- When to validate – validation vs transformations
- Output sanitization
- Encoding challenges
- Unicode challenges
- SQL injection
- SQL injection basics
- Lab – SQL injection
- Attack techniques
- Content-based blind SQL injection
- Time-based blind SQL injection
- SQL injection best practices
- Input validation
- Parameterized queries
- Lab – Using prepared statements
- Case study – SQL injection in Fortra FileCatalyst
- Code injection
- OS command injection
- Lab – Command injection
- OS command injection best practices
- Using Runtime.exec()
- Lab – Command injection best practices
- Case study – Shellshock
- Lab – Shellshock
- Case study – Command injection in VMware Aria
- OS command injection
- HTML injection – Cross-site scripting (XSS)
- Cross-site scripting basics
- Cross-site scripting types
- Persistent cross-site scripting
- Reflected cross-site scripting
- Client-side (DOM-based) cross-site scripting
- Lab – Stored XSS
- Lab – Reflected XSS
- XSS protection best practices
- Protection principles – escaping
- Lab – XSS fix / stored
- Lab – XSS fix / reflected
- Case study – XSS vulnerabilities in DrayTek Vigor routers
- Input validation
- A03 – Software Supply Chain Failures
- The OWASP Top Ten from Claude Code’s perspective
- A06 – Insecure Design
- The STRIDE model of threats
- Secure design principles of Saltzer and Schroeder
- Economy of mechanism
- Fail-safe defaults
- Complete mediation
- Open design
- Separation of privilege
- Least privilege
- Least common mechanism
- Psychological acceptability
- Client-side security
- Frame sandboxing
- Cross-Frame Scripting (XFS) attacks
- Lab – Clickjacking
- Clickjacking protection best practices
- Lab – Using CSP to prevent clickjacking
- Frame sandboxing
- A07 – Authentication Failures
- Authentication
- Authentication basics
- Multi-factor authentication (MFA)
- Case study – The InfinityGauntlet attack
- Password management
- Storing account passwords
- Password in transit
- Lab – Is just hashing passwords enough?
- Dictionary attacks and brute forcing
- Salting
- Adaptive hash functions for password storage
- Lab – Using adaptive hash functions in JCA
- Lab – Experimenting with adaptive hash functions in Claude Code
- Password policy
- NIST authenticator requirements for memorized secrets
- Password database migration
- Authentication
- A08 – Software and Data Integrity Failures
- Subresource integrity
- Importing JavaScript
- Lab – Importing JavaScript
- Case study – The British Airways data breach
- Insecure deserialization
- Serialization and deserialization challenges
- Integrity – deserializing untrusted streams
- Integrity – deserialization best practices
- Look ahead deserialization
- Property Oriented Programming (POP)
- Creating a POP payload
- Lab – Creating a POP payload
- Lab – Using the POP payload
- Case study – Deserialization RCEs in NextGen Mirth Connect
- Subresource integrity
- A10 – Mishandling of Exceptional Conditions
- Error and exception handling principles
- Error handling
- Returning a misleading status code
- Reachable assertion
- Information exposure through error reporting
- Information leakage via error pages
- Case study – Information leakage via errors in Apache Superset
- Exception handling
- In the catch block. And now what?
- Catching NullPointerException
- Empty catch block
- Lab – Exception handling mess
- A06 – Insecure Design
- Wrap up
- Secure coding principles
- Principles of robust programming by Matt Bishop
- And now what?
- Software security sources and further reading
- Java resources
- Generative AI – Resources and additional guidance
- Secure coding principles
Pricing
3 days Session Price
2250 EUR / person
- Live, instructor led classroom training
- Discussion and insight into the hacker’s mindset
- Hands-on practice using case studies based on high-profile hacks and live lab exercises
Customized course
Tailor a course to your preferences
- Send us a brief description of your business’s training needs
- Include your contact information
- One of our colleagues will be in touch to schedule a free consultation about training requirements
Inquiry
Interested in the trainings but still have some questions? Curious about how you can customize a training for your team? Send us a message and a team member will be in touch within 24 hours.
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