OWASP Top 10, C# Secure Coding Follow Up, South Africa

We can host this training at your preferred location. Contact us!

This course is the next step for our participants, who completed our OWASP Top 10, C# Secure Coding Fundamentals course. This is a follow up training, meaning that in order to attend this, everyone must already have the knowledge that is covered in the Fundamentals.

This course enables our participants to gain a deeper knowledge in the field, because here we emphasize the C#-specific aspects of secure coding instead of the general vulnerabilities.

At the end of the training everyone has the possibility to take an exam, where they are able to measure their level of the gained knowledge.

Learn client-side vulnerabilities and secure coding practices
Learn to use various security features of the .NET development environment
Have a practical understanding of cryptography

Client-side security
.NET security architecture and services
Practical cryptography

Client-side security

JavaScript security
Same Origin Policy
Simple requests
Preflight requests
Clickjacking
- Clickjacking
- Exercise – IFrame, Where is My Car?
- Protection against Clickjacking
- Anti frame-busting – dismissing protection scripts
- Protection against busting frame busting
AJAX security
- XSS in AJAX
- Script injection attack in AJAX
- Exercise – XSS in AJAX
- XSS protection in AJAX
- Exercise CSRF in AJAX – JavaScript hijacking
- CSRF protection in AJAX

.NET security architecture and services

.NET architecture
Code Access Security (optional)
- Full and partial trust
- Evidence classes
- Permissions
- Code access permission classes
- Deriving permissions from evidence
- Defining custom permissions
- .NET runtime permission checking
- The Stack Walk
- Effects of Assert()
- Class and method-level declarative permission
- Imperative (programmatic) permission checking
- Exercise – sandboxing .NET code
- Using transparency attributes
- Allow partially trusted callers
- Exercise – using transparency attributes

Practical cryptography

Rule #1 of implementing cryptography
Cryptosystems
- Elements of a cryptosystem
- .NET cryptographic architecture
Symmetric-key cryptography
- Providing confidentiality with symmetric cryptography
- Symmetric encryption algorithms
- Modes of operation
- Encrypting and decrypting (symmetric)
Other cryptographic algorithms
- Hash or message digest
- Hash algorithms
- SHAttered
- Hashing
- Message Authentication Code (MAC)
- Providing integrity and authenticity with a symmetric key
- Random number generation
  - Random numbers and cryptography
  - Cryptographically-strong PRNGs
  - Weak PRNGs in .NET
  - Strong PRNGS in .NET
  - Hardware-based TRNGs
Asymmetric (public-key) cryptography
- Providing confidentiality with public-key encryption
- Rule of thumb – possession of private key
- The RSA algorithm
  - Introduction to RSA algorithm
  - Encrypting with RSA
  - Combining symmetric and asymmetric algorithms
  - Digital signing with RSA
  - Asymmetric algorithms in .NET
  - Exercise Sign
  - Exercise – using .NET cryptographic classes
Public Key Infrastructure (PKI)
- Man-in-the-Middle (MitM) attack
- Digital certificates against MitM attack
- Certificate Authorities in Public Key Infrastructure
- X.509 digital certificate

Upcoming Trainings

Join our public courses in our South Africa facilities. Private class trainings will be organized at the location of your preference, according to your schedule.

Classroom / Virtual Classroom

10 November 2024