HIPAA audited file proxy
Authenticated HIPAA-compliant file delivery proxy for clinical documents. Tokenized URLs scoped to one document, one recipient, and one time window. Virus scanning before delivery, configurable retention per partner, full audit trail. Passed external HIPAA security audit on the first review.
What is HIPAA-compliant file delivery?
HIPAA-compliant file delivery is authenticated, scoped, and audited transfer of clinical documents between systems. Each download URL is tokenized to a single document, recipient, and time window, every read is virus-scanned and logged, and retention is enforced per partner contract so the access trail survives a HIPAA audit.
The problem
Clinical documents needed authenticated, scoped, audited delivery between systems. Tokenized URLs were scoped too loosely; download paths bypassed virus scanning; retention rules varied by partner; the audit trail had gaps when documents arrived from third-party EHRs. An external HIPAA security audit was scheduled and the team needed compliance baked into the pipe.
The approach
We built a .NET file proxy: tokenized download URLs scoped to a single document, single recipient, single time window; virus scanning before delivery; configurable retention per partner contract; full audit trail logging every read, every download, every expiry. Integration adapters handle EHR and partner systems uniformly. The audit dataset is queryable for compliance review without exporting CSVs.
Stack and engineering choices
- .NET secure proxy
- Tokenized scoped URLs
- Virus scanning gate
- Configurable retention
- Per-document audit log
- EHR + partner adapters
- Compliance-ready audit dataset
Outcome
The proxy passed external HIPAA security audit on the first review without remediation. Token misuse is impossible by construction; retention is enforced by configuration; the audit dataset closes compliance questions in minutes instead of weeks.
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