---
title: "Security articles — Ivan Kahl"
description: "Articles by Ivan Kahl about Security."
url: https://ivankahl.com/blog/tags/security/
---

Blog · Topic

# Security

3 articles tagged Security.

## 2025

06 Jan 2025

### [Beyond the Random Class: Cryptographic Randomness in .NET 6+](https://ivankahl.com/blog/beyond-the-random-class-cryptographic-randomness-in-net-6/)

Security-sensitive code needs true randomness. Here, .NET's RandomNumberGenerator class is used to produce cryptographically secure random values instead of Random.

7 min read

## 2019

21 Feb 2019

### [Using SData 2.0 in Sage CRM: Part 5 - A word on authentication](https://ivankahl.com/blog/using-sdata-2-0-in-sage-crm-part-5-a-word-on-authentication/)

The final part of the SData 2.0 series for Sage CRM, comparing the available authentication methods and when each one is the best choice.

4 min read

## 2018

12 Nov 2018

### [Fixing "Authentication required, Browser session mismatch" error in Sage CRM](https://ivankahl.com/blog/fixing-authentication-required-browser-session-mismatch-error-in-sage-crm/)

Logging into Sage CRM over HTTPS with Internet Explorer can trigger a "Browser session mismatch" error. The cause and the fix are explained.

1 min read