| 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 |
The OWASP Top 10 is a globally recognized list of the most common and severe vulnerabilities affecting web applications — including .NET systems.
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
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
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
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 occur when two or more threads access shared data simultaneously, leading to unexpected behavior.
Duplicate payments
Reused coupon codes
Unsynchronized transaction logs
✔ Best Practices:
Use lock blocks for critical sections
Apply SemaphoreSlim or Mutex for async coordination
Handle concurrency in database transactions
| 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
| 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 Guidelines promote safe, predictable software practices:
Use using blocks and IDisposable for resource cleanup
Avoid unchecked exceptions
Use strong typing and avoid dynamic
Sanitize 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
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 |
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