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Application Security — Documents Are Untrusted Input

A .docx is a ZIP file Open a .docx file in a hex editor and the first two bytes are PK . Every modern Office format - .docx , .xlsx , .pptx - is a ZIP archive of XML parts and embedded resources. PDF is not a ZIP file, but just like Office formats it...

Oliver Sturm (DevExpress)

29 May 2026

.NET .net core Architecture ASP.NET Blazor Office File API Reporting security WinForms WPF XAF

Application Security — Stronger Hashes and Safer Passwords

Every application that stores passwords makes an implicit bet: that the hashing algorithm it chose will remain strong enough to resist attacks for as long as those hashes exist. It’s worth revisiting that bet regularly. This post walks through the reasoning...

Oliver Sturm (DevExpress)

17 April 2026

.NET .net core Architecture ASP.NET Blazor Dashboard Data Access Office File API Reporting security WinForms WPF XAF

WinForms — Connect a .NET Desktop Client to a Middle Tier Security Server (EF Core with WebSockets)

Series Overview This article is the second in a series of posts for teams who wish to build .NET desktop applications that communicate securely with backend services. Table of Contents Intro — Modern Desktop Apps And Their Complex Architectures Choosing...

Bogdan Kharchenko (DevExpress)

18 September 2024

.NET access control ASP.NET authentication authorization EF EFCore Entity Framework grid rbac security web api webapi WinForms XAF

WinForms — Connect a .NET Desktop Client to a Secure Backend Web API Service (EF Core with OData)

Series Overview As you may recall from an earlier post (Modern Desktop Apps And Their Complex Architectures), we want to help guide our loyal WinForms/WPF/VCL/.NET MAUI/XAF customers through new/tightened security requirements (and associated complexities...

Dennis Garavsky (DevExpress)

17 July 2024

.NET access control ASP.NET authentication authorization EF EFCore Entity Framework odata rbac security web api webapi WinForms XAF

.NET — About NuGet Package Audit and "False-Positive" Security Warnings

Over the last few years, the commitment to `information security` has evolved in a positive direction - more organizations taking a far more serious posture when it comes to system security and its associated risks. Software development processes are...

Dennis Garavsky (DevExpress)

17 July 2024

.NET .net core .NET MAUI ASP.NET Dashboards NuGet Reporting security WinForms WPF XAF

.NET and .NET Framework — Migration from Newtonsoft.Json to System.Text.Json (v24.1)

What Will Change in v24.1 In our v24.1 release cycle (set to ship in June 2024), the following DevExpress products will use Microsoft’s System.Text.Json instead of Newtonsoft.Json for JSON serialization-related tasks in runtime code : Data Access Library...

Dennis Garavsky (DevExpress)

1 April 2024

.NET .net 6 .NET 8 .net core ASP.NET ASP.NET Core Blazor C# Dashboards DevExtreme installation installer Maps Reporting Roadmap security Survey v24.1 Web WinForms WPF XAF

XAF - .NET App Security & Web API Service Benchmark for EF Core and XPO ORM

Hope you are all doing well. We created this GitHub project to test the performance of XAF's Security System for the two Object-Relational Mapping (ORM) libraries. We tested these libraries with BenchmarkDotNet : Microsoft Entity Framework Core (EF Core...

Dennis Garavsky (DevExpress)

23 March 2021

access control ASP.NET authentication authorization EF EF Core Entity Framework non-XAF permissions RBAC RLS roles security WinForms WPF XAF XPO

XAF – WinForms and ASP.NET UI Case Study by UKIGMO (Cross-Platform .NET App UI)

UKIGMO primarily utilizes Microsoft technologies/platforms such as .NET, Azure, SQL Server, etc. to develop business applications for small and medium-sized enterprises. UKIGMO's founder has more than 20 years of development experience and more than 10 years of experience with DevExpress tools....

Dennis Garavsky (DevExpress)

23 October 2020

access control ASP.NET case study LOB security Web WebForms WinForms XAF XPO

eXpressApp Framework - Early Access Preview (v19.2)

We are two months away from our next major update (v19.2). The purpose of this post is to share our progress and give XAF users the opportunity to test new functionality before we wrap up our current dev cycle. XAF is part of the Universal Subscription...

Dennis Garavsky (DevExpress)

20 August 2019

.net core ASP.NET Performance prerelease roadmap security testing Usability v19.2 WinForms XAF

XAF - Role-based Access Control & User Authentication API for .NET Apps Powered by the XPO and EF Core ORM

UPDATED: .NET App Security API (Role-based Access Control) is available free-of-charge (versions 21.2.x and 22.1.x). We recently began a series of posts designed to explain XAF’s security system and how it can be used in non-XAF .NET apps powered by DevExpress...

Dennis Garavsky (DevExpress)

17 July 2019

access control ASP.NET authentication authorization Console EF EF Core Entity Framework Featured non-XAF permissions RBAC RLS roles security WCF WinForms WPF XAF XPO