Protecting OCT Scanners, Fundus Cameras, and Medical Devices: A Cybersecurity Guide for Eye Care Practices
Eye Care Cybersecurity Case Study
An ICSI Guide to Securing Connected Diagnostic Equipment Without Disrupting Patient Care.. READ THE REPORT
Introduction: Your Diagnostic Equipment Is Now Part of Your Attack Surface
An OCT scanner doesn’t feel like a computer. Neither does a fundus camera, an auto-refractor, or an IOL calculator. To the clinical staff using them every day, they’re diagnostic tools not IT infrastructure.
But to a network, that’s exactly what they are: connected devices, running an operating system, sitting on the same network as patient records, scheduling software, and everything else the practice depends on. And increasingly, that’s exactly how attackers see them too not as medical equipment, but as an entry point.
At ICSI, we help optometry and ophthalmology practices secure exactly this kind of connected diagnostic equipment without disrupting the clinical workflows that depend on it. Our cyber security services are designed to address the unique risks associated with medical devices and connected imaging systems. In this guide, we break down why medical devices have become a significant cybersecurity blind spot in eye care, what the current data shows about the scale of the problem, and the practical steps practices can take to protect their imaging equipment without needing an enterprise IT department to do it.
Why Diagnostic Devices Are a Bigger Risk Than Most Practices Realize
They Were Built for Function, Not Security
OCT scanners, fundus cameras, and similar diagnostic equipment are engineered by manufacturers focused on imaging accuracy, clinical workflow, and regulatory approval not on cybersecurity. Many run on operating systems that were current when the device was purchased but haven’t been meaningfully updated since, because updating them risks disrupting FDA-cleared functionality.
They Often Run for Years Past Their Security Shelf Life
Diagnostic equipment is expensive, and practices reasonably keep it in service for as long as it works clinically. The problem: a device that’s still clinically excellent after eight or ten years is often running an operating system the manufacturer stopped patching years earlier creating a device that works perfectly for imaging and is simultaneously wide open from a security standpoint.
They Frequently Share a Network With Everything Else
In many practices, diagnostic devices, the EHR system, scheduling software, and even guest Wi-Fi all sit on the same flat network. That means a vulnerability in a single imaging device can potentially give an attacker a path to patient records, insurance data, and administrative systems not just the device itself.
They Depend on Vendor Remote Access
Most diagnostic imaging equipment is serviced, updated, and calibrated by the manufacturer or a third-party vendor often through remote access sessions. That access is essential for keeping equipment running, but a compromised vendor account or unmonitored remote session can provide a direct route into the practice’s network.
What the Data Shows About Medical Device Cybersecurity Risk
The scale of this problem across healthcare is significant, and eye care practices are not exempt from the same underlying dynamics, highlighting the growing importance of IT solutions for healthcare.
- The FBI has found that 53% of connected medical devices and related IoT devices in healthcare settings have at least one known critical vulnerability that remains unpatched.
- Broader healthcare device research indicates connected medical devices average more than six known vulnerabilities per device far higher than typical enterprise IT hardware.
- An estimated 60% of medical devices in use are considered end-of-life, meaning no security patches are available from the manufacturer at all.
- Nearly all hospitals studied in recent research manage at least one connected medical device with a known, actively exploited vulnerability still present on their network.
- Early data from 2026 indicates that roughly 1 in 5 healthcare organizations have already experienced at least one cyberattack specifically involving a medical device.
- Diagnostic and laboratory equipment specifically has been identified as one of the more commonly affected categories of medical technology in reported healthcare security incidents, alongside EHR systems and patient monitoring devices.
For a smaller eye care practice, these numbers translate into a simple reality: the diagnostic equipment sitting in your exam rooms right now may already have a known vulnerability that a manufacturer isn’t going to patch and treating it the same way you’d treat a laptop or a printer isn’t enough to protect it.
How Attackers Actually Get In Through Medical Devices
Understanding the typical attack path helps clarify why device-specific protections matter:
- Initial foothold: Attackers often gain access through an easier, less-monitored entry point first an unpatched network device, a compromised vendor remote access session, or a phishing email that compromises staff credentials.
- Lateral movement: Once inside the network, attackers move sideways looking for higher-value targets — including imaging systems and the data they store or transmit.
- Escalation: From there, an attacker may exfiltrate patient imaging and record data, deploy ransomware across connected systems, or in more advanced cases, attempt to interfere with device functionality itself.
Because many practices run diagnostic equipment on the same flat network as everything else, step two lateral movement is often far easier for an attacker than it should be. This is the single most fixable part of the equation, and it’s where practices can make the fastest, most meaningful improvement.
A Practical Security Framework for Eye Care Diagnostic Equipment
None of the following requires replacing your imaging equipment or disrupting clinical workflows. It requires treating these devices as the network assets they actually are.
1. Segment Diagnostic Devices Onto Their Own Network
This is the single highest-impact step available to most practices. Placing OCT scanners, fundus cameras, auto-refractors, and similar equipment on a separate network segment (VLAN) from patient records, administrative systems, and guest Wi-Fi means that even if one device is compromised, an attacker’s ability to move further into the network is significantly limited.
2. Maintain an Actual Inventory of Connected Devices
You can’t protect what you don’t know is on your network. Many practices are surprised, once an inventory is done, by how many connected devices including ones added years ago and rarely thought about are actually present. A basic, maintained inventory is the foundation everything else builds on.
3. Apply Manufacturer Updates Promptly and Ask About End-of-Life Timelines
When manufacturers release security patches or firmware updates, apply them on a defined schedule rather than an ad hoc basis. Just as importantly, ask vendors directly when a device is expected to reach end-of-life support, so replacement or additional compensating controls can be planned for in advance rather than discovered after the fact.
4. Govern Vendor Remote Access Tightly
Remote maintenance access should go through secure, monitored connections with time-limited access windows not a standing, always-on remote access tool. Vendors servicing your equipment should be held to clear expectations around encryption, authentication, and incident reporting as part of your service agreements.
5. Use Compensating Controls for Devices That Can’t Be Patched
For legacy or end-of-life devices that can no longer receive security updates, network segmentation, strict access controls, and monitoring for unusual network activity from that device become the primary line of defense since the device itself can no longer be hardened directly.
6. Monitor for Unusual Device Behavior
Passive network monitoring tools built for clinical environments can flag unusual activity from a diagnostic device unexpected outbound connections, unusual data volumes, or communication with unfamiliar destinations
without requiring an agent installed on the device itself or any interruption to its clinical function.
7. Include Devices in Your HIPAA Risk Assessment
Diagnostic imaging equipment that stores or transmits patient data is squarely in scope for a HIPAA Security Rule risk assessment. Practices should ensure these devices not just servers and workstations are explicitly accounted for in that process.
Why This Matters Beyond Compliance
Securing diagnostic equipment isn’t only about avoiding a HIPAA penalty or a breach notification letter. When imaging systems are compromised or taken offline, it directly affects the practice’s ability to deliver care delayed diagnoses, canceled imaging appointments, and disrupted patient scheduling. In more advanced incidents, attackers have shown willingness to interfere with device functionality itself, not just the data it produces. For a practice built around timely, accurate diagnostic imaging, that operational risk is often just as significant as the data privacy risk.
Frequently Asked Questions
Why are medical devices like OCT scanners and fundus cameras considered a cybersecurity risk?
These devices are connected to the practice’s network but are typically built for diagnostic function rather than security, often run on operating systems that are no longer actively updated, and are frequently placed on the same network as patient records and administrative systems making them a potential entry point for attackers.
How common are unpatched vulnerabilities in connected medical devices?
The FBI has reported that 53% of connected medical devices and related IoT devices have at least one known critical vulnerability that remains unpatched, and broader research suggests connected medical devices average more than six known vulnerabilities per device.
Can an OCT scanner or fundus camera really be an entry point into a practice’s whole network?
Yes, particularly when diagnostic devices share a flat network with EHR systems, scheduling software, and administrative systems. If a device is compromised, an attacker can potentially move laterally to reach far more sensitive systems, which is why network segmentation is one of the most effective protections available.
What if a diagnostic device is old and can no longer receive security patches?
Devices that have reached end-of-life and can no longer be patched still need protection through compensating controls primarily network segmentation, strict access limits, and ongoing monitoring for unusual activity since the device itself can’t be hardened further.
Does vendor remote access for equipment servicing and calibration create risk?
It can, if not properly governed. Remote maintenance access should occur through secure, time-limited, monitored connections rather than a standing always-on remote access tool, and vendors should be contractually held to clear security and incident reporting standards.
Do medical devices need to be included in a practice’s HIPAA risk assessment?
Yes. Any diagnostic device that stores or transmits patient data is in scope for a HIPAA Security Rule risk assessment, and practices should specifically confirm these devices not just servers and computers are accounted for in that process.
The Bottom Line
Diagnostic equipment is one of the most overlooked corners of cybersecurity in eye care treated as clinical hardware rather than the network-connected computer it actually is. With connected medical devices carrying well-documented, often unpatched vulnerabilities across healthcare broadly, eye care practices that haven’t specifically addressed their imaging equipment are likely carrying more risk than they realize.
The fix doesn’t require replacing expensive equipment or disrupting clinical workflows. It requires knowing what’s on your network, separating diagnostic devices from everything else, governing vendor access deliberately, and building monitoring and compensating controls around the equipment that can no longer be patched directly.
At ICSI, we help eye care practices nationwide assess and secure exactly this kind of connected diagnostic equipment building network segmentation, vendor access controls, and monitoring designed for clinical environments, without interrupting the patient care these devices support.
Want to know how exposed your practice’s diagnostic equipment actually is? Contact ICSI for a complimentary medical device security assessment.
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