Zero-Knowledge
Record-Level Security
for Healthcare
Seald Healthcare protects patient data wherever it is reviewed, processed, or stored. Every record remains encrypted and decrypts only at authorized read time under policy for an approved person, application, service, or AI agent. Access remains policy-governed and revocable in real time, even after sharing, with every access decision recorded in a tamper-evident audit log.
The Problem
Patient Data Moves. Control Doesn’t.
Healthcare organizations often encrypt patient data in transit and at rest, but the systems using that data often retain the authority to decrypt it. As PHI moves across applications, vendors, and storage environments, the originating organization loses direct cryptographic control over how that data is accessed. A single compromised credential, application, or vendor can expose every record it is authorized to decrypt. The problem is not that patient data moves. It is that encryption and control do not move with it.
1B+
Records exposed across 7,400+ breaches since 2009
$6.64M
Average healthcare breach cost in 2026, highest of any industry
80%+
Of stolen patient records taken from third-party vendors
380K+
Patient records breached every day in 2025
HIPAA Safe Harbor
A Breach of Properly Encrypted PHI Is Not a Reportable Breach Per HHS
If protected health information is lost, stolen, or accessed by an unauthorized party, properly encrypted data remains unreadable and unusable. Under HHS guidance, properly encrypted PHI is not considered unsecured PHI when the decryption key or process has not also been compromised, and therefore does not trigger HIPAA breach-notification requirements. That means a security incident does not automatically become a reportable breach. The result can be reduced breach liability, lower cyber insurance costs, and a dramatically different outcome for your organization.
“Protected health information (PHI) is rendered unusable, unreadable, or indecipherable to unauthorized individuals if one or more of the following applies: electronic PHI has been encrypted as specified in the HIPAA Security Rule… such encryption renders the breach notification provisions of the HITECH Act inapplicable.”
No Public Disclosure
No 60-day notification clock, no HHS portal listing, no press release.
Reduced OCR Exposure
Demonstrated safeguards reduce regulatory and enforcement exposure.
Lower Insurance Premiums
Record-level encryption may qualify for carrier premium credits.
Integration Models
Protect Patient Data Wherever It Is Reviewed, Processed, or Stored
Seald Healthcare applies the same zero-knowledge, record-level security model across human access, software processing, and protected storage. Every record remains encrypted and decrypts only at authorized read time under policy.
Human Review
Secure Portal Access
Provide authorized users with secure access to patient records through a browser-based portal without requiring native vendor integrations.
Best For
- Prior Authorization
- Appeals
- Clinical Review
- Case Management
- Referral Processing
Software & AI Processing
Native Integration
Integrate Seald Healthcare through our API and SDK so applications, vendors, and AI systems can securely process patient data without exposing plaintext outside authorized workflows.
Best For
- Claims Processing
- Eligibility
- AI Workflows
- Analytics
- Clearinghouses
- EHR Integrations
Business Continuity
Protected Storage
Keep databases, archives, backups, and disaster recovery environments encrypted while maintaining controlled access for authorized restoration and processing.
Best For
- Databases
- Cloud Storage
- Archives
- Immutable Backups
- Disaster Recovery
Compliance vs. Security
in Healthcare
Healthcare does not have a compliance problem, it has a data security problem. Between 2009 and early 2026, more than 1 billion patient records have been exposed in reported healthcare data breaches. This white paper examines why HIPAA compliance does not equal security and how record-level encryption addresses a critical gap in how healthcare data is protected.
Record-Level Encryption vs. Tokenization
Tokenization replaces sensitive values with surrogate identifiers while storing the original data in a separate lookup vault. If that vault or the application authorized to query it is compromised, attackers can still retrieve the underlying plaintext. Seald Healthcare encrypts each patient record at the source and keeps decryption authority separate from the data through zero-knowledge key management. The result is persistent protection that remains attached to the record wherever it is stored, processed, or shared.
Infrastructure Security Doesn’t Protect the Data Itself
Cloud providers secure the infrastructure they operate, but healthcare organizations remain responsible for protecting patient data. Traditional encryption often protects storage while the systems using that data retain the authority to decrypt it. Seald Healthcare adds a zero-knowledge, record-level security layer that keeps decryption authority separate from the data, allowing patient records to remain encrypted wherever they are stored, processed, or shared.
Why Now
Now is the Time for
Record-Level Security
Regulation is Catching Up
A recently proposed update to the HIPAA Security Rule, published in the Federal Register, would make encryption of ePHI mandatory by removing the longstanding addressable exception.
AI Breaks Perimeter Security
AI agents are autonomously accessing, processing, and transmitting PHI across organizational boundaries at machine speed. The data itself must be encrypted, with access control that persists wherever it travels.
Encryption Is About to Change Forever
Harvest now, decrypt later attacks are already underway. NIST has finalized post-quantum cryptography standards. Patient records do not expire. Seald Healthcare is post-quantum ready.