Unsecured File Uploads Are Putting Healthcare Organizations at Risk; Here’s How to Fix It  

According to HIMSS, more than 80% of healthcare organizations now use cloud services to store or process health data. Thousands of daily files commonly enter healthcare environments from:

• Patients using unmanaged personal devices
• Third-party providers and specialists
• Diagnostic labs and imaging centers
• Insurers, billing partners, and referral networks

These files appear harmless.

PDFs, scanned forms, images, ZIP archives, and DICOM files are routine in healthcare workflows, so they’re inherently trusted by their handlers.

The risk lies in this precise mundanity. The same files carrying sensitive patient data or treatment options can hide metadata, scripts, or embedded objects that traditional tools fail to inspect.

Modern healthcare really can’t function without cloud-based services.

Telehealth platforms enable document sharing before and after virtual visits. EHR systems rely on cloud integrations to exchange data across providers.

As upload volume increases, so does the attack surface. Unfortunately, lowering the attack surface isn’t an option, as it would require reverting to outdated communication methods. Such a step backwards is absurd; it would also slow everything down and make patient care far less efficient.

All things considered, it’s not that healthcare services are ignorant when it comes to cybersecurity.

More out of ignorance than malice, these systems rely on the built-in security of their cloud providers or on external security tools which protect certain areas of the workflows: antivirus engines, DLP, CASB (Cloud Access Security Brokers), or cloud-native security controls.

However, out of all security tools deployed, few were built to fully secure file uploads.

• Antivirus engines primarily detect known threats, often missing advanced or zero-day malware hidden in complex file structures.
• DLP (Data Loss Prevention) can identify and redact sensitive data, but it does nothing to detect or neutralize possible threats in the files.
• CASB solutions focus on access control and usage monitoring, but do not perform deep inspection or sanitization of uploaded files.
• Cloud service providers secure the infrastructure but take no responsibility for the safety of file content itself

This leaves a critical gap at the point of upload.

The gap can be further exploited by attackers to hide malicious codes within innocent-looking files, inject zero-day malware into archived files, or use weaponized file uploads to penetrate the system.

The HIPAA federal law mandates strict, nationwide standards for securing PHI (Protected Health Information). Doctors, hospitals, and insurers alike are held to these standards. 

However, files with exposed PHI or hidden malware often enter healthcare systems, via uninspected cloud uploads. PHI can be exposed in multiple ways:

• Visible document fields
• Embedded metadata
• Image layers
• Hidden objects

Malware can be embedded inside invoices, consent forms, or imaging files.

If either files containing PHI or files containing malware enter healthcare systems, it leads to a straight HIPAA violation.

Visibility, demanded by HIPAA, is also an issue.

Once files are stored in SaaS platforms, organizations often lose visibility into how data is accessed, shared, or retained.

A lack of visibility leads to gaps in confidentiality, integrity, and availability; all HIPAA core requirements.

In fact, organizations often fail to assess and mitigate risks introduced by new technologies, including cloud-based file handling, as emphasized by the U.S. Department of Health and Human Services (HHS) Office for Civil Rights.

What’s needed is a stronger approach to upload security, which prevents PHI leakage, preserves visibility, and prevents malware breaches. Without it, organizations face audit challenges, breach of notification obligations, and loss of patient trust.

When health records are compromised, the downstream consequences extend far beyond financial fraud for people whose data has been stolen.

Possible consequences of healthcare data theft include identity theft, fraudulent insurance claims, or illegal prescription access.

What’s worse, such breaches expose deeply personal information. This breach of privacy can place people receiving mental health care, reproductive services, or substance use support at risk of stigma, discrimination, and lasting emotional harm.

Even patients with mundane medical histories may lose confidence in the system, leading them to delay care or withhold vital information from clinicians.

All being said, covering any security gaps in healthcare organizations becomes a matter of holistic patient care.

In more critical situations, a ransomware attack can block access to essential medical records or disable critical systems, putting lives in danger.

Such was the case in 2017, with the WannaCry attack on NHS systems. The attack led to cancelled surgeries and diverted ambulances, proving once more how cyber incidents can rapidly escalate into public health crises.

As cyberattacks in healthcare compromise both patient care and the organization’s reputation, leading healthcare providers are shifting their approach to cybersecurity.

What used to be “an IT problem”, solved by contracts with third-party providers, now becomes a matter of patient safety.

If securing their data and treatment plans is a solution to delivering great patient care, then file uploads can no longer become a point of focal infection, so to speak.

Secure cloud uploads require multiple layers of inspection, and files must be subjected to multiple scanning and analysis processes, before they’re accepted into cloud systems.

A healthcare-ready upload security checklist includes:

• Multi-engine malware scanning to improve detection accuracy
• CDR (Content Disarm & Reconstruction) to remove active content without affecting the file 
• Deep file inspection before storage or sharing to detect evasive or sophisticated malware 
• PHI and sensitive data detection (and redaction) within files 
• Policy enforcement aligned with HIPAA requirements

This approach transforms uploads from blindly trusted events into controlled, auditable processes.

MetaDefender Cloud acts as a dedicated security layer for healthcare file intake.

It intercepts and analyses files before they reach cloud platforms, EHRs, or collaboration systems.

The platform applies advanced malware detection using multiple scanning engines in parallel. This improves coverage against known and unknown threats.

CDR removes scripts, macros, and embedded objects from medical documents while preserving clinical usability.

Sensitive data inspection helps reduce PHI exposure by identifying and redacting sensitive content before files are shared or stored. It also classifies sensitive data types, dictating how data is handled, stored, and protected.

API-based integration allows MetaDefender Cloud to be integrated into healthcare file workflows, including patient portals, telehealth platforms, and third-party intake systems.