EC-Council · CASE-.NET
Certified Application Security Engineer .NET (CASE-.NET) Practice Tests
Validates the ability to build secure .NET applications throughout the software development lifecycle, covering secure requirements gathering, input validation, authentication and authorization, cryptographic practices, error handling, session management, and security testing.
Exam Details
Practice Questions
625
≈ 5 practice exams
Duration
120 minutes
Passing Score
70%
Difficulty
AssociateLast Updated
Feb 2026
Certified Application Security Engineer .NET (CASE-.NET) Practice Exam Preparation
Use this CASE-.NET practice exam to prepare for Certified Application Security Engineer .NET (CASE-.NET) with realistic questions, detailed explanations, and focused study modes. The practice bank includes 625 questions for EC-Council CASE-.NET, so you can review the exam steadily instead of relying on one long cram session.
As you practice, pay extra attention to patterns in your missed answers. Start with short sessions to identify weak areas, then move into timed quizzes once your accuracy is consistent.
The explanations are especially useful when you want to connect exam wording to the responsibilities and scenarios described in the official certification guidance. Use the free preview first, then unlock the full question bank when you are ready to build a complete study routine.
Exam Overview
The Certified Application Security Engineer .NET (CASE .NET) is an application security certification offered by EC-Council that validates a software developer's ability to integrate security practices throughout every phase of the .NET software development lifecycle (SDLC). Developed in partnership with global application and software development experts, it tests critical security knowledge and skills spanning pre-deployment through post-deployment phases, with a focus on .NET-specific secure coding techniques including input validation, authentication and authorization mechanisms, cryptographic implementation, session management, and error handling.
The certification covers the full spectrum of SDLC security activities: from gathering secure requirements and designing secure architectures, to writing defensively coded .NET applications and performing security testing using both static (SAST) and dynamic (DAST) analysis methods. It addresses real-world threats and attack vectors targeting .NET web applications and teaches developers to build security in from the ground up rather than bolt it on after deployment. The exam is identified by exam code 312-95 and is recognized globally as a benchmark for application security competency in the Microsoft .NET ecosystem.
Who Should Take This Exam
CASE .NET is designed primarily for .NET developers with a minimum of two years of professional development or information security experience who want to formalize their application security expertise. It is equally relevant for application security engineers, security analysts, and security testers who work with .NET-based systems and need to demonstrate proficiency in secure SDLC practices.
The certification is also well-suited for software architects, DevSecOps practitioners, and anyone involved in designing, building, testing, managing, or protecting .NET applications — including web applications, mobile applications, and IoT solutions built on the .NET framework. Professionals transitioning from pure development roles into application security roles will find this certification particularly valuable for validating their security-oriented coding skills.
Prerequisites
There are no strict formal educational prerequisites, but EC-Council requires candidates to meet at least one of the following eligibility criteria before sitting for the exam: complete official EC-Council CASE training through an accredited training partner (ATC, iWeek, or iClass), be an active EC-Council Secure Programmer (ECSP) .NET or Java member in good standing, possess a minimum of two years of working experience in the information security or software development domain, or hold an equivalent industry certification such as GIAC GSSP-.NET or GSSP-Java. Candidates applying via the experience or equivalent-certification pathway must submit a USD $100 non-refundable application fee.
In terms of recommended knowledge, candidates should have hands-on familiarity with the .NET framework and C# or VB.NET development, a working understanding of web application architectures, and foundational knowledge of common vulnerability categories such as those defined by OWASP. Familiarity with basic cryptographic concepts, HTTP/HTTPS protocols, and software testing methodologies will also ease preparation for the exam domains.
Exam Format
The CASE .NET exam (312-95) consists of 50 multiple-choice questions and must be completed within 120 minutes. The passing score is 70%, meaning candidates must answer at least 35 questions correctly. The exam is delivered through the EC-Council exam portal and can be taken at authorized Prometric testing centers or, in eligible cases, via online proctored delivery.
All 50 questions are scored; no unscored or survey items have been publicly disclosed. The multiple-choice format tests both conceptual understanding and practical application of secure coding principles across the ten defined exam domains. Candidates who do not pass may retake the exam, subject to EC-Council's standard retake policies.
Skills Measured
- 1.Domain 1: Understanding Application Security, Threats, and Attacks — Covers the foundational concepts of application security, common attack surfaces, and the threat landscape targeting .NET applications, including OWASP Top 10 and .NET-specific vulnerabilities.
- 2.Domain 2: Security Requirements Gathering — Addresses how to identify and document security requirements during the planning phase of the SDLC, including abuse case modeling and threat modeling techniques.
- 3.Domain 3: Secure Application Design and Architecture — Focuses on security design principles such as least privilege, defense in depth, separation of duties, and secure architecture patterns applicable to .NET systems.
- 4.Domain 4: Secure Coding Practices for Input Validation — Covers techniques for validating, sanitizing, and encoding user-supplied data in .NET to prevent injection attacks, XSS, and related vulnerabilities.
- 5.Domain 5: Secure Coding Practices for Authentication and Authorization — Examines implementation of robust authentication mechanisms (including multi-factor authentication) and role-based/claims-based authorization in .NET applications.
- 6.Domain 6: Secure Coding Practices for Cryptography — Covers proper use of cryptographic APIs in the .NET framework, including symmetric/asymmetric encryption, hashing, digital signatures, and common cryptographic pitfalls to avoid.
- 7.Domain 7: Secure Coding Practices for Session Management — Addresses secure session token generation, storage, transmission, and invalidation in .NET web applications to prevent session hijacking and fixation attacks.
- 8.Domain 8: Secure Coding Practices for Error Handling — Focuses on implementing secure exception handling and logging in .NET, preventing information leakage through error messages while ensuring adequate audit trails.
- 9.Domain 9: Static and Dynamic Application Security Testing (SAST & DAST) — Covers security testing methodologies applied during and after development, including code review techniques, automated static analysis tools, and dynamic testing approaches for .NET applications.
- 10.Domain 10: Secure Deployment and Maintenance — Addresses security considerations for deploying .NET applications to production environments, patch management, security configuration hardening, and ongoing maintenance security practices.
Study Tips
- Download and study the official CASE .NET Exam Blueprint v1 from cert.eccouncil.org, as it defines the exact knowledge areas and provides the authoritative outline for all 10 exam domains.
- Use EC-Council's official iClass self-paced or instructor-led training course, which aligns directly with the exam objectives and includes the official courseware textbook covering all 10 domains in depth.
- Focus heavily on Domains 4 through 8 (input validation, authentication, cryptography, session management, and error handling), as these secure coding practice domains represent the core practical skills the exam emphasizes.
- Practice with hands-on .NET coding exercises for each domain — particularly implementing ASP.NET Core authentication middleware, the .NET cryptography namespace (System.Security.Cryptography), and ASP.NET data validation attributes — since the exam tests applied knowledge, not just theory.
- Review the OWASP .NET Security Cheat Sheet and the OWASP Top 10 as supplementary references, since many exam scenarios are grounded in real-world attack patterns that OWASP documents extensively.
- Allocate approximately two months of structured study time, spending at least two hours per day, and use a topic checklist based on the Blueprint to ensure full coverage before scheduling the exam.
- Take practice exams from reputable sources to familiarize yourself with the multiple-choice question style and identify knowledge gaps; focus follow-up study on domains where practice scores are weakest.
Career Benefits
Earning the CASE .NET certification positions professionals for roles such as Application Security Engineer, Secure Software Developer, Security Analyst, DevSecOps Engineer, and Application Security Tester — all of which are in strong demand as organizations increasingly require security expertise embedded within development teams rather than solely in separate security departments. The credential is recognized globally and is valued by employers across financial services, healthcare, government, and technology sectors where .NET remains a dominant development platform.
The CASE .NET complements other EC-Council certifications such as the CEH and CPENT by providing a developer-focused security credential, and it stacks well with Microsoft-specific certifications for professionals building careers in the Microsoft ecosystem. Certified professionals typically see enhanced earning potential relative to non-certified peers, and the credential supports long-term career growth by demonstrating a structured, SDLC-wide approach to application security that aligns with frameworks such as OWASP SAMM and NIST SSDF.
Sample Questions
5 sample questions with answers and explanations. The full bank has 625 questions, enough for 5 full-length practice exams.
Preview — answers shown1. A security code review identifies the following RSA encryption implementation. What security vulnerability exists in this code? (Select one!)
AThe RSA key size of 1024 bits is insufficient and vulnerable to factorization attacks
BThe code does not implement digital signatures to verify data integrity
CRSA encryption is inappropriate for large data and should use hybrid encryption
DPKCS1 v1.5 padding is vulnerable to padding oracle attacks and should be replaced with OAEP
Explanation
Using RSAEncryptionPadding.Pkcs1 exposes the implementation to padding oracle attacks where attackers can decrypt ciphertext by observing server responses to modified paddings. OAEP (Optimal Asymmetric Encryption Padding) with SHA-256 or higher prevents these attacks through randomized padding. While 1024-bit RSA keys are indeed deprecated, the question asks about the code shown which does not specify key size. Digital signatures serve a different purpose (authentication and integrity) than encryption (confidentiality) and are not required for basic encryption operations. RSA's size limitations for data encryption are a valid concern, but the immediate vulnerability is the weak padding scheme. Modern best practices require RSAEncryptionPadding.OaepSHA256 or higher, never PKCS1 v1.5 padding for new implementations.
2. A code review examines this AES encryption implementation: using Aes aes = Aes.Create(); aes.Key = Encoding.UTF8.GetBytes('mySecretKey12345'); aes.Mode = CipherMode.ECB; byte[] encrypted = aes.CreateEncryptor().TransformFinalBlock(plaintext, 0, plaintext.Length); Which cryptographic weakness makes this implementation vulnerable? (Select one!)
ATransformFinalBlock does not authenticate the ciphertext allowing tampering
BECB mode encrypts identical plaintext blocks to identical ciphertext blocks revealing patterns in encrypted data
CThe key derivation uses UTF8 encoding instead of cryptographically secure random bytes
DThe code does not specify PaddingMode allowing padding oracle attacks
Explanation
ECB (Electronic Codebook) mode is the most critical vulnerability because it encrypts each block independently, causing identical plaintext blocks to produce identical ciphertext blocks. This reveals patterns in the encrypted data, famously demonstrated by ECB-encrypted images where the original picture remains recognizable. The correct mode is CBC (Cipher Block Chaining) or preferably GCM (authenticated encryption). While the key derivation is also problematic, ECB mode is the most severe cryptographic flaw that compromises confidentiality regardless of key strength. Padding mode defaults to PKCS7 which is secure. Authentication is important but ECB mode is the primary vulnerability.
3. A development team configures distributed session state using Redis for an ASP.NET Core application. They set the session timeout to 60 minutes but users report being logged out after 20 minutes. What is the most likely cause? (Select one!)
AThe Redis cache eviction policy or maxmemory settings are expiring session data before the application timeout
BThe SameSite cookie attribute is forcing session expiration after 20 minutes
CJWT tokens embedded in the session are expiring independently of session configuration
DASP.NET Core automatically overrides session timeout to 20 minutes for security
Explanation
Redis cache eviction policies and maxmemory settings can expire data before the application session timeout if the cache reaches capacity or uses volatile eviction policies like volatile-lru. Distributed session requires proper Redis configuration with adequate memory and appropriate eviction policies like noeviction or allkeys-lru. ASP.NET Core does not override configured session timeouts with hardcoded values. SameSite attribute controls CSRF protection, not session duration. While JWT expiration can affect authentication, the question describes distributed session issues, not token-based authentication. The mismatch between configured and actual session lifetime typically indicates cache-level expiration occurring before application-level timeout.
4. A Blazor WebAssembly application needs to authenticate users and call protected APIs. The architect must choose between storing JWT tokens in localStorage or sessionStorage. What is the primary security consideration? (Select one!)
AsessionStorage is immune to cross-site scripting attacks unlike localStorage
BBoth localStorage and sessionStorage are vulnerable to XSS attacks; tokens should be stored in httpOnly cookies when possible
CJWT tokens should be stored in both localStorage and sessionStorage for redundancy
DlocalStorage provides superior security because it persists across browser sessions
Explanation
Both localStorage and sessionStorage are accessible to JavaScript and therefore vulnerable to XSS attacks. If an attacker injects malicious scripts, they can read tokens from either storage mechanism and exfiltrate them. HttpOnly cookies cannot be accessed by JavaScript, providing better XSS protection, though Blazor WebAssembly may require token access for Authorization headers. localStorage persistence across sessions is a functionality difference, not a security advantage. SessionStorage has the same XSS vulnerability as localStorage; neither is immune. Storing tokens in multiple locations increases attack surface rather than improving security. For Blazor WASM, implement defense-in-depth with CSP headers, secure token handling, short token lifetimes, and XSS prevention measures.
5. A .NET application uses ECDsa for digital signatures with elliptic curve cryptography. Which key size provides security equivalent to RSA 3072-bit encryption? (Select one!)
A1024-bit ECDSA key
B256-bit ECDSA key
C384-bit ECDSA key
D521-bit ECDSA key
Explanation
A 256-bit ECDSA key provides security equivalent to approximately 3072-bit RSA encryption. Elliptic curve cryptography achieves the same security level with much smaller key sizes compared to RSA. The security equivalence is approximately: 256-bit ECC equals 3072-bit RSA, 384-bit ECC equals 7680-bit RSA, and 521-bit ECC provides even higher security equivalent to 15360-bit RSA. This is why ECDSA and other elliptic curve algorithms are preferred for mobile and IoT devices where smaller signatures and faster operations are beneficial. The smaller key sizes result in faster cryptographic operations, smaller signatures, and reduced bandwidth requirements while maintaining equivalent security strength. ECDSA keys do not typically exceed 521 bits, making 1024-bit ECDSA keys non-standard.
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