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Application Security — Documents Are Untrusted Input
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
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
Application Security — Why One Does Not Simply Protect a Data Store Connection String and Other Login Credentials?
Application Security — Why One Does Not Simply Protect a Data Store Connection String and Other Login Credentials?
A developer asks: “How do I protect my connection string in a desktop application?” This is one of the most common security questions in .NET development, and it sounds like it should have a straightforward answer. But there is a fundamental problem we...
Oliver Sturm (DevExpress)
2 April 2026
.NET .net core Architecture Backend Data Access database Desktop Frontend Middle Tier ORM RDBMS REST security webapi windows WinForms WPF
Modern Desktop Apps And Their Complex Architectures
Modern Desktop Apps And Their Complex Architectures
Back in 2002, the world was exciting for Windows desktop application developers: Microsoft released the .NET Framework! With it came the completely new language C# (do you remember it was called Cool prior to the release?) as well as various new subsystems...
Oliver Sturm (DevExpress)
9 February 2024
.NET .net core Architecture Asynchronous Backend Data Access Desktop Frontend Middle Tier REST security webapi windows WinForms WPF
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