Secure Document Viewing for Healthcare & Finance in .NET

The Challenge of Regulated Documents

In industries like healthcare and finance, document management isn't just about storage; it's about security and compliance. Mishandling Patient Health Information (PHI) or sensitive financial data can lead to severe penalties and loss of trust. Traditional client-side viewers often cache files locally or require downloading, which creates significant security vulnerabilities.

Why Client-Side Viewing Is Risky

Browser Caching: Files can remain in the browser cache long after the session ends.
Uncontrolled Downloads: Users might accidentally save sensitive files to insecure local devices.
Lack of Audit Trails: It's difficult to track exactly which pages were viewed and for how long.

Doconut's Secure Server-Side Approach

Doconut fundamentally changes this dynamic by rendering documents entirely on the server. The client browser only receives images (PNG/JPG/SVG) of the document pages, not the original file itself.

Key Security Benefits

Zero Footprint: No breakdown of the original document reaches the client device. The source file remains safely behind your firewall.
Ephemeral Sessions: Viewer tokens can be configured to expire immediately after use, preventing unauthorized link sharing.
Watermarking: Automatically overlay user details, dates, or "CONFIDENTIAL" stamps on every rendered page to deter screen capturing.

Essential Features for Compliance

To meet standards like HIPAA, GDPR, and SOX, Doconut provides specialized tools:

1. Integrated Redaction

Permanently obscure sensitive information before it reaches the viewer.

// Example: Redacting a specific region (e.g., SSN area)
var options = new DocViewerOptions();
options.Redactions.Add(new RedactionRegion(pageIndex: 1, x: 100, y: 200, width: 300, height: 50));
// The rendered image will have this area blacked out

2. Granular Access Control

Since Doconut integrates directly into your .NET application (MVC, Core, WebForms), it respects your existing Authentication and Authorization logic. You determine exactly who can view a document, down to the specific file level.

3. Comprehensive Audit Logging

Track every interaction. Because every page request goes through your server, you can log exactly who viewed what and when. This data is invaluable for compliance audits and forensic analysis.

Conclusion

For developers building applications in regulated sectors, Doconut offers a "security-first" architecture. By keeping documents on the server and providing robust redaction and auditing tools, you can deliver a seamless user experience without compromising on compliance.

Start your secure trial today and protect your sensitive data.