Post-Quantum Signing Arrives Quietly: ML-DSA for Word Documents in .NET
Post-quantum cryptography usually arrives as a migration project. For document signing in .NET it arrives as a different PFX file: GroupDocs.Signature 26.9 signs Word documents with ML-DSA certificates through the same DigitalSignOptions call used for RSA. This article contrasts the expected effort with the actual one, covers the three security levels and their cost, and is honest about the two limits.
Three Ways to Load a Document, Only One of Them Safe
A document that links to a remote picture asks whoever opens it to fetch that address. On a server, that hands an uploader control over your outbound requests. GroupDocs.Signature 26.9 changes the default so linked resources are skipped; this article compares the three load modes, shows how to whitelist one host without opening the door, and explains why signing needs no network access at all.
Your Signing Pipeline Just Got Stricter: Certificate Validity in GroupDocs.Signature 26.9
Three changes in GroupDocs.Signature 26.9 turn silent problems into loud ones: an expired certificate now throws instead of signing, PDF digital signatures default to SHA-256 instead of SHA-1, and SignatureSettings.LogLevel actually filters. This article covers what each change means for a pipeline that has been running for years, and what to do about the cases where you genuinely need the old behaviour.
GroupDocs.Redaction for .NET 26.9 – September 2026 Release Notes
GroupDocs.Redaction for .NET 26.9 completes the move away from System.Drawing and improves cross-platform support for Linux and other supported operating systems.
GroupDocs.Signature for .NET 26.9 – September 2026 Release Highlights
The 26.9 release focuses on security, adding .NET 10, stricter defaults and post‑quantum signing support.
Stop Decrypting Documents Just to Compare Them - Encrypted PDF and Word Diffs in .NET
Comparing encrypted documents usually starts with a decryption step nobody wants in the pipeline. This guide shows how GroupDocs.Comparison for .NET opens protected PDF and Word files directly, how PasswordSaveOption decides what guards the result, and why a missing password throws later than you expect.
How to Control External Resource Loading in GroupDocs.Comparison for .NET: Comparing Default Behaviour, Full Blocking, and Whitelisting
Discover how to stop compared documents fetching remote images in GroupDocs.Comparison for .NET. This practical guide compares default loading, full blocking, and URL-fragment whitelisting with working code examples.
GroupDocs.Conversion for .NET 26.9 – September 2026 Release Highlights
GroupDocs.Conversion for .NET 26.9 introduces new GIS and compression formats, HTML slideshow conversion, TIFF enhancements, and tighter evaluation limits.
GroupDocs.Merger for .NET 26.9 – September 2026 Release Highlights
The September 2026 release (v26.9) introduces row‑wise spreadsheet joining, TIFF PageBuilder enhancements, improved licensing exceptions, accurate preview dimensions, and critical concurrency fixes.
GroupDocs.Comparison for .NET 26.9 – September 2026 Release Highlights
