Source Code Security Review

Source Code Security Review

Find real security vulnerabilities in Java and Python code using OWASP-driven, industry-proven review techniques

Most critical security failures are not the result of exotic attacks but of ordinary code written under pressure and reviewed without a security mindset. This course is built for professionals who need to consistently identify security vulnerabilities directly in source code, before scanners, penetration tests, or attackers do.

Rather than abstract theory or generalized secure design guidance, this training focuses exclusively on how vulnerabilities manifest in real Java and Python codebases and how experienced reviewers uncover them. The material aligns with OWASP standards and reflects how modern security teams actually perform source code reviews in enterprise and product environments.

The instructor brings over 30 years of industry experience, using examples and techniques drawn from real assessments, breach investigations, and secure development programs. The emphasis is on what matters in practice, not academic completeness.

Learning Outcomes

By the end of this course, participants will be able to:

• Perform structured, security-focused source code reviews on Java and Python applications
• Identify OWASP Top 10 vulnerabilities directly from source code
• Recognize insecure coding patterns and dangerous assumptions
• Evaluate authentication, authorization, and data handling logic for security flaws
• Use static analysis tools effectively without relying on them blindly
• Document security findings in a way developers can act on immediately

Prerequisites

Participants should have:

• Practical programming experience in Java and/or Python
• Familiarity with web application concepts and APIs
• Basic understanding of security terminology and risk concepts
• Experience reading and navigating unfamiliar codebases

Detailed Training Outline

Foundations of Secure Source Code Review

• Purpose and goals of security-focused code review
• Threat-oriented mindset versus functional correctness
• Understanding attacker perspectives while reviewing code
• Mapping application architecture to review priorities
• Scoping a security code review effectively
• Common reviewer mistakes and blind spots

OWASP Standards Applied to Source Code Review

• Overview of OWASP Top 10 from a code reviewer’s perspective
• Translating OWASP categories into concrete code-level indicators
• Identifying trust boundaries in code
• Data flow analysis for security review
• Entry points, sinks, and sensitive operations

Injection Vulnerabilities

• Input sources and tainted data identification
• SQL injection patterns in Java and Python
  • ORM misuse and false sense of safety
• Command injection through system calls
• LDAP, XPath, and expression language injections
• Unsafe string construction patterns
• Defensive coding indicators reviewers should expect to see

Authentication and Identity Handling

• Password handling logic and storage review
• Authentication workflow analysis
• Token generation, validation, and lifecycle flaws
• Session management mistakes in code
• Hardcoded credentials and backdoor logic
• Common framework misuse patterns

Authorization and Access Control Failures

• Missing authorization checks in business logic
• Insecure direct object references
• Role and permission enforcement flaws
• Inconsistent authorization across layers
• Trusting client-side or upstream checks
• Reviewing authorization logic in controllers, services, and helpers

Sensitive Data Exposure

• Identifying sensitive data in code paths
• Insecure handling of PII, credentials, and secrets
• Improper use of cryptographic APIs
• Weak or deprecated algorithms
• Key management issues visible in source code
• Logging of sensitive information

Cross-Site Scripting and Output Handling

• Reflected, stored, and DOM-based XSS from a code perspective
• Unsafe rendering patterns in templates
• Improper output encoding
• Framework-specific escaping pitfalls
• JSON and API-related XSS vectors

Insecure Deserialization and Unsafe Object Handling

• Identifying deserialization entry points
• Java serialization risks and patterns
• Python pickle and object reconstruction risks
• Trust assumptions around serialized data
• Defensive patterns reviewers should verify

Security Misconfiguration as Seen in Code

• Dangerous default configurations embedded in code
• Debug and test flags left enabled
• Improper error handling and information leakage
• Stack trace exposure patterns
• Feature flags and environment-based security failures

Using Components with Known Vulnerabilities

• Dependency review from source and configuration files
• Identifying outdated or vulnerable libraries
• Understanding transitive dependency risks
• Mapping vulnerable components to actual code usage
• Limits of automated dependency scanners

Static Analysis Tools as Review Aids

• Role of SAST tools in security review
• Tool selection for Java and Python
• Interpreting findings correctly
• Validating tool results manually
• Managing false positives and false negatives
• Integrating tools into a reviewer workflow

Documenting and Communicating Findings

• Writing actionable security findings
• Risk rating based on exploitability and impact
• Including code references and proof points
• Providing remediation guidance developers accept
• Aligning findings with OWASP categories
• Review reports used in real organizations

End-to-End Secure Code Review Practice

• Reviewing an unfamiliar codebase methodically
• Prioritizing high-risk areas quickly
• Combining manual review with tool output
• Producing a professional security review summary
• Common patterns seen across real-world projects