Table of Contents
| Section | Description |
|---|---|
| OWASP Top 10 | Critical threats in web security |
| SQL Injection | Data protection in .NET |
| XSS | Frontend safety & sanitization |
| CSRF | Identity protection strategies |
| Race Conditions | Thread safety in backend systems |
| ASP.NET Core Security Layers | Built-in protection mechanisms |
| Penetration Testing Tools | Common tools for testing .NET apps |
| SEI CERT & OWASP Guidelines | Standards for secure software |
| Official Training | Courses to master secure .NET development |
OWASP Top 10: Know the Threats Before You Code
The OWASP Top 10 is a globally recognized list of the most common and severe vulnerabilities affecting web applications — including .NET systems.
Current OWASP Top 10 Threats:
Broken Access Control
Cryptographic Failures
Injection (SQL, NoSQL, LDAP)
Insecure Design
Security Misconfiguration
Vulnerable Components
Identification & Authentication Failures
Integrity Failures
Logging & Monitoring Issues
Server-Side Request Forgery (SSRF)
For in-depth defensive strategies:
🔗 Securing .NET Web Applications Training
SQL Injection: Still a Real Threat in .NET
csharp
// ❌ Vulnerable Example
var user = context.Users
.FromSqlRaw("SELECT * FROM Users WHERE Email = '" + email + "'")
.FirstOrDefault();
✔ Safe Solution:
csharp
var user = context.Users
.FirstOrDefault(u => u.Email == email);
Tips to Prevent SQL Injection in .NET:
Use LINQ with Entity Framework
Avoid raw queries with dynamic input
Use parameterized methods like
SqlParameter
XSS: Cross-Site Scripting Vulnerabilities
Unsanitized user input rendered in your UI can lead to XSS attacks.
html
@Html.Raw(ViewBag.Message)
✔ Secure Practice:
Razor's default output encoding protects most scenarios
Avoid unnecessary use of
@Html.Raw()Implement CSP (Content-Security-Policy) headers
CSRF: Protecting User Sessions
Cross-Site Request Forgery exploits a logged-in user's credentials to perform unwanted actions.
In ASP.NET Core:
csharp
[ValidateAntiForgeryToken]
public IActionResult SubmitForm(UserModel model)
{
...
}
CSRF token generation in Razor views:
html
@Html.AntiForgeryToken()
Learn more about web service security:
🔗 Introduction to .NET Core for Web Services Training
Race Conditions: Invisible Yet Dangerous
Race conditions occur when two or more threads access shared data simultaneously, leading to unexpected behavior.
Typical Cases:
Duplicate payments
Reused coupon codes
Unsynchronized transaction logs
✔ Best Practices:
Use
lockblocks for critical sectionsApply
SemaphoreSlimorMutexfor async coordinationHandle concurrency in database transactions
ASP.NET Core Security Architecture
| Layer | Role |
|---|---|
| Authentication Middleware | Verifies user identity |
| Authorization Middleware | Role-based access control |
| HTTPS Enforcement | Redirects all HTTP to HTTPS |
| Identity Framework | Handles user login/roles/passwords |
| Data Protection APIs | Protects sensitive keys & tokens |
csharp
app.UseHttpsRedirection();
app.UseAuthentication();
app.UseAuthorization();
Build robust web applications:
🔗 Developing ASP.NET MVC Web Applications Training
Penetration Testing Tools for .NET Apps
| Tool | Purpose |
|---|---|
| OWASP ZAP | Free security scanner for web apps |
| Burp Suite | Professional testing proxy |
| Nikto | Web server scanner |
| Nmap | Network discovery and port scanning |
| .NET Security Analyzer | Static code analysis for .NET security flaws |
Use these in development, staging, and post-deployment environments.
SEI CERT & OWASP Secure Coding Principles
SEI CERT Guidelines promote safe, predictable software practices:
Use
usingblocks andIDisposablefor resource cleanupAvoid unchecked exceptions
Use strong typing and avoid
dynamicSanitize input and validate boundaries
OWASP Recommendations:
Never trust client input
Encrypt sensitive data
Log safely without exposing user data
Apply server-side authorization, not just client-side checks
Official .NET Security Training
Become an expert by joining these internationally recognized courses:
| Course | Link |
|---|---|
| Securing .NET Web Applications | View Course |
| Introduction to .NET Core for Web Services | View Course |
| Developing ASP.NET MVC Web Applications | View Course |
With nearly 30 years of expertise offering learning solutions that are filled with excellence, we are one of the most reputable training course providers in the world. Now, we bring our unrivaled knowledge and industry-leading courses to the dynamic tech landscape of Russia. Whether you find yourself in the bustling streets of Moscow, the cultural melting pot of Saint Petersburg, or exploring the innovation hubs of Novosibirsk and beyond, our comprehensive range of IT courses caters to tech enthusiasts across the country. Additionally, for clients seeking a unique learning experience, we offer the opportunity to join us in Istanbul. As a vibrant and captivating city where East meets West, Istanbul serves as a perfect location to enhance your skills. We handle all the logistics, including organizing your training, accommodations, and other necessities, ensuring a seamless and rewarding experience. Our expert instructors, renowned for their industry experience, guide you through immersive courses, empowering you with the latest tools and techniques. Join our international community of learners, connect with professionals from diverse backgrounds, and embrace the transformative power of our training solutions. Embark on a journey that transcends borders and expands your horizons, as we bring together the best of Russia and Istanbul to accelerate your tech career.