Certified Application Security Engineer .NET (CASE .NET) — Lesson 2: Input, Identity, Session, Cryptography, Errors, and Data Protection

Learning Objectives

• Explain the structures, services, data, settings, roles, and dependencies governing Asp.Net Input Validation and Identity And Authorization.
• Implement and validate Session Protection, Cryptography, and Exception Handling and Data Protection using reviewable evidence.
• Evaluate the condition where a control passes a basic check but fails during Cryptography because Session Protection data, version, or dependency assumptions differ and select a proportionate corrective response.

Detailed Topics

• Asp.Net Input Validation applied to the course scenario, expected behavior, dependencies, controls, and evidence.
• Identity And Authorization applied to the course scenario, expected behavior, dependencies, controls, and evidence.
• Session Protection applied to the course scenario, expected behavior, dependencies, controls, and evidence.
• Cryptography applied to the course scenario, expected behavior, dependencies, controls, and evidence.
• Exception Handling and Data Protection applied to the course scenario, expected behavior, dependencies, controls, and evidence.

Instructor Demonstration

The instructor traces a development team must release a business application while preventing common weaknesses, proving control effectiveness, and maintaining secure delivery evidence. The walkthrough connects tools, configuration or analysis logic, system messages, decisions, and evidence captured in the secure .NET design, code-review record, test evidence, and release-security checklist. It also tests the exception where a control passes a basic check but fails during Cryptography because Session Protection data, version, or dependency assumptions differ.

Hands-On Exercise

Complete a controlled, authorized EC-Council exercise covering Input, Identity, Session, Cryptography, Errors, and Data Protection and preserve the verified result in the secure .NET design, code-review record, test evidence, and release-security checklist.

1. Confirm scope, authorization, prerequisites, versions, identities, dependencies, and acceptance criteria.
2. Execute the workflow while recording settings, outputs, events, decisions, and system messages.
3. Test normal behavior, one boundary condition, and the stated exception without targeting real third-party systems.
4. Document corrections, evidence, ownership, retest criteria, rollback or recovery, and handover actions.

Scenario Analysis

• Identify which object, service, policy, setting, or sequence most strongly influences Asp.Net Input Validation.
• Compare two defensible responses and explain technical, security, operational, legal, and support trade-offs.
• Determine how the secure .NET design, code-review record, test evidence, and release-security checklist should be approved, retained, retested, and updated.

Troubleshooting Guidance

Start where expected behavior first differs from the observed result. Check authorization, prerequisites, identity, configuration order, data quality, version compatibility, connectivity, status, resource limits, and evidence separately. Treat “a control passes a basic check but fails during Cryptography because Session Protection data, version, or dependency assumptions differ” as a hypothesis until logs, settings, captured outputs, and retest outcomes confirm the cause.

Validation Checklist

• Required components, identities, permissions, settings, safety controls, and dependencies are present.
• The secure .NET design, code-review record, test evidence, and release-security checklist connects each conclusion to objective, reviewable evidence.
• Normal processing, a boundary condition, dependency behavior, and the stated exception were tested.
• Corrections, ownership, retest criteria, rollback or recovery, documentation, and operational handover are complete.

Lesson Outcome

Learners can apply Input, Identity, Session, Cryptography, Errors, and Data Protection, explain the resulting security or operational behavior, and defend the outcome through the secure .NET design, code-review record, test evidence, and release-security checklist.