Mitigating Risks in Healthcare IoT Infrastructure

A connected medical device can improve patient care, but what will happen when the network supporting it becomes a security risk? Hospitals rely on healthcare IoT infrastructure, where medical equipment, communication networks, software, and data platforms work together to support clinical operations and exchange patient information.

From bedside monitors to remote patient monitoring systems, these connections make healthcare more accessible and efficient. However, they also create opportunities for cyberattacks that can expose sensitive records, interrupt clinical workflows, and threaten patient safety.

Unlike conventional IT systems, medical equipment cannot always be disconnected or updated without affecting essential care. This makes healthcare iot cybersecurity a challenge that extends far beyond securing individual devices.

So, where do the greatest infrastructure risks originate, and how can healthcare organizations address them without interrupting patient care?

Major Cybersecurity Risks in Healthcare IoT Infrastructure

Healthcare IoT systems face security risks from aging technology, connected networks, and software weaknesses that can affect clinical operations.

1. Outdated Software and Vulnerable Medical Devices

Medical equipment often stays in use for many years, even after its operating system stops receiving security updates. This leaves known vulnerabilities and exposed services that attackers can exploit.

For example, an older imaging workstation might still perform essential scans while running unsupported software. Replacing or updating it is not always simple. Hospitals often depend on manufacturers to verify patches, check compatibility, and approve changes before installation.

Until these issues are addressed, attackers could exploit vulnerable components to:

• Install malware or gain unauthorized access
• Interrupt device functions and clinical services
• Access other connected healthcare systems

2. Unauthorized Access and Weak Authentication

Weak passwords, shared administrator accounts, and excessive user permissions increase the risk of unauthorized access to medical device management systems. Some medical equipment also has limited authentication capabilities, making it difficult to control access to sensitive settings. These weaknesses become more concerning when devices connect to wider hospital networks.

Manufacturer support accounts can introduce further risks if attackers compromise their credentials. Unattended management sessions and third party technicians who retain access after maintenance also leave systems exposed. Once unauthorized users gain access, they can change device configurations, extract sensitive information, interrupt equipment functions, or move into other connected clinical systems.

3. Insecure Networks and Lateral Movement

When hospitals allow unrestricted communication between administrative computers, medical equipment, and clinical servers, an attack on one system can reach others. Poorly configured firewalls, exposed management ports, insecure wireless settings, and weak network separation make this possible.

Attackers can use these connections to move deeper into hospital networks, a technique called lateral movement. Ransomware is particularly dangerous because it can compromise supporting servers and prevent healthcare staff from accessing patient records, diagnostic images, or essential clinical applications.

The threat is well documented. According to an August 2026 CISA advisory, Medusa ransomware had affected more than 500 organizations across several sectors, including healthcare, as of April 2026. The advisory also describes how attackers use remote access tools to move between systems after gaining entry.

4. Unsecured Data Transmission and Cloud Integrations

Medical devices regularly exchange information with clinical applications, remote monitoring platforms, and cloud services. During these exchanges, insufficient encryption or insecure communication protocols can leave sensitive information exposed. Misconfigured cloud storage, poorly secured APIs, and excessive application permissions create further opportunities for data misuse.

These weaknesses can lead to several problems:

• Unauthorized disclosure of patient records and diagnostic information
• Modification of clinical data before it reaches the receiving application
• Compromise of device management functions through vulnerable integrations
• Failed or interrupted data transfers between healthcare systems

Healthcare interoperability standards such as DICOM, HL7, and FHIR support information exchange, but they do not automatically guarantee secure communication. Protection depends on how organizations configure interfaces, encryption, and access controls. 

5. Third Party and Supply Chain Vulnerabilities

Healthcare organizations depend on medical device manufacturers, firmware suppliers, cloud providers, and maintenance vendors for essential technology and support. Security weaknesses within these external services can affect systems that hospitals do not directly control.

Vulnerable software libraries, compromised updates, and insecure device management tools can introduce threats into connected medical environments. Persistent vendor access, stolen support credentials, poor supplier oversight, and delayed vulnerability notifications make these risks harder to identify.

6. Limited Device Visibility and Unsafe Security Changes

Medical equipment can go unnoticed by security teams when hospitals fail to record new installations or update device inventories. This leaves gaps in monitoring and makes it difficult to identify which equipment needs attention.

Traditional security tools are not always suitable for medical devices. Some cannot support endpoint security agents, and aggressive vulnerability scans can disrupt normal device operations.

Even routine security changes carry risks. Untested network restrictions, automatic device quarantine, or incompatible software updates can interrupt patient monitoring, delay diagnostic procedures, or block essential clinical communications. A security action intended to protect one system could affect the care being delivered through it.

For this reason, healthcare organizations must consider clinical availability and patient safety when assessing cybersecurity risks.

Strategies for Mitigating Risks in Healthcare IoT Infrastructure

Effective IoMT cybersecurity requires practical security controls that address vulnerabilities across connected medical devices, networks, applications, and cloud platforms while keeping essential clinical services available.

1. Maintain a Complete Inventory of Connected Medical Devices

A complete device inventory is a key part of medical IoT device security, giving healthcare organizations a clear view of connected medical devices, IoT sensors, clinical gateways, and other assets that need protection. For effective iot healthcare cybersecurity, the inventory should cover medical devices, IoT sensors, clinical gateways, network equipment, cloud applications, and supporting hospital systems.

Build the inventory using passive network discovery, procurement records, clinical engineering databases, manufacturer documentation, and physical inspections. Devices that communicate infrequently can escape passive monitoring, making additional checks necessary.

Record the following information for each asset:

Identification: 

• Manufacturer
• Model
• Serial number
• Location.

Software: 

• Operating system
• Firmware version
• Support status

Connectivity: 

• IP address
• Communication protocols
• Connected services

Clinical function: 

• Purpose
• Patient safety criticality
• Responsible department

Security: 

• Known vulnerabilities
• Vendor support arrangements
• Existing controls

Keep records current whenever equipment is installed, moved, repaired, modified, or retired. This helps teams identify affected devices promptly when manufacturers report new vulnerabilities.

2. Conduct Risk Based Security Assessments

Once you have a reliable device inventory, the next priority is understanding which weaknesses could cause the most harm. Assessments should cover device firmware, hardware interfaces, network connections, applications, APIs, and cloud environments rather than examining medical equipment alone.

Threat modeling helps security teams identify vulnerable entry points, trace possible attack paths, and understand where attackers could cross security boundaries. These findings should guide vulnerability prioritization based on four factors:

• Clinical impact: Potential consequences for patient safety and essential medical services
• Exploitability: Technical feasibility of an attack and evidence of active exploitation
• Exposure: Accessibility through internal networks, external connections, or vendor systems
• Recovery capability: Existing security protections and the ability to restore clinical functions

In June 2026, CISA introduced Binding Operational Directive 26-04, which prioritizes security updates according to vulnerability exploitation, asset exposure, and potential technical impact. Although the directive applies to US federal civilian agencies, its approach offers useful guidance for healthcare risk assessments worldwide.

Penetration testing can reveal exploitable weaknesses that automated scans overlook. 

3. Implement Network Segmentation and Zero Trust Access Controls

Network segmentation divides healthcare infrastructure into controlled zones, restricting unnecessary connections between medical equipment and other hospital systems.

Separate networks according to their functions:

• Clinical devices: Isolate critical equipment from administrative and guest networks
• Imaging systems: Control connections between imaging devices and PACS
• Laboratory equipment: Limit access from unrelated workstations
• Device management: Separate management interfaces from clinical traffic
• Operational technology: Keep building management systems separate from medical networks

To implement segmentation, map required device communications, group systems by clinical dependencies, and establish appropriate traffic rules. Test these policies before deploying restrictions in stages to avoid interrupting medical services.

VLANs alone cannot prevent lateral movement. Firewalls and access control lists must enforce communication boundaries.

Zero Trust strengthens these controls through least privilege permissions, authenticated management access, restricted vendor connections, and verification of approved communication paths.

4. Strengthen Authentication and Device Access Management

Not everyone working in a hospital needs access to medical device settings or management systems. Healthcare organizations should assign individual accounts, replace default passwords where devices support it and regularly review who can access clinical gateways, administrative applications, and maintenance interfaces.

Multi factor authentication (MFA) gives protection to remote access systems, administrative applications, and vendor accounts with elevated permissions. However, older medical devices often lack support for this feature. Hospitals can manage access through compatible network gateways or privileged access management systems instead.

Service accounts should have only the permissions required for their functions, while unused credentials must be disabled. For maintenance work, limit vendor access to the approved service period and record privileged activities. Monitoring these sessions also helps security teams identify unusual actions without interfering with routine clinical work.

5. Establish Safe Patch and Vulnerability Management

A security update should fix a weakness without affecting how medical equipment performs. Hospitals need a patch management process that accounts for device compatibility, manufacturer instructions, and clinical schedules.

When a vulnerability is reported, the security team should identify affected equipment using manufacturer advisories, vulnerability databases, CISA's Known Exploited Vulnerabilities Catalog, and available SBOMs. From there, the process involves:

1. Confirm which devices or supporting systems are affected
2. Check exploitability, exposure, and potential clinical consequences
3. Reviewing available fixes with the manufacturer
4. Scheduling changes with clinical engineering and relevant departments
5. Test the patch for device functionality and compatibility with connected systems
6. Installing it during an approved maintenance period and checking that equipment operates correctly
7. Document the outcome and any unresolved risks

6. Protect Medical Data Transmission and Cloud Infrastructure

Medical data travels between connected devices, integration gateways, clinical applications, and cloud platforms. Protect these connections with encryption, system authentication, and integrity checks to prevent unauthorized access or changes. Stored data should also be encrypted where supported.

Focus on securing the following components:

APIs: 

• Authenticate requests
• Verify permissions
• Restrict access tokens
• Store credentials securely
• Log activity

Cloud infrastructure: 

• Review storage permissions
• Internet exposure
• Device management portals
• Third party integrations

Edge gateways: 

• Restrict administrative access
• Maintain secure configurations
• Apply approved firmware updates
• Protect connections to clinical systems

7. Implement Continuous Monitoring and Threat Detection

Security teams need to spot unusual device activity before attackers reach other systems. Passive network monitoring can help without installing endpoint agents or running intrusive scans on medical equipment.

Monitor for:

• Unexpected outbound connections or unfamiliar destinations
• Unusual traffic between network zones
• Unauthorized device management sessions

Centralized logs and security information and event management (SIEM) systems help connect events across servers, gateways, networks, and cloud services.

Behavioral and AI assisted detection can identify anomalies, but encrypted traffic, incomplete visibility, and false alerts limit accuracy. Human review remains essential.

Establish clinical escalation procedures before isolating suspicious equipment to avoid interrupting patient care.

8. Secure Third Party Access and the Medical Device Supply Chain

Before purchasing connected medical equipment, hospitals should examine how manufacturers and service providers handle cybersecurity. These checks should continue throughout the contract, not end once the equipment is installed.

Supplier reviews should cover:

Software support: 

• Availability of security patches
• Secure updates
• Confirmed support periods

Vulnerability reporting: 

• Clear disclosure procedures
• Notification timelines
• Responsibilities for fixing identified weaknesses

Software transparency: 

• Access to software bills of materials (SBOMs) to identify vulnerable components and dependencies

Remote maintenance: 

• Approved access gateways
• Individual vendor accounts
• Multi factor authentication
• Restricted permissions
• Session logs

Vendor access should remain active only for authorized maintenance activities and be withdrawn afterwards.

9. Develop Incident Response and Clinical Continuity Plans

Healthcare IoT incident response plans must address security threats without compromising patient care. Hospitals should prepare for device compromises, ransomware, unauthorized access, and failures of supporting systems, with clear responsibilities for security teams, clinical engineers, healthcare professionals, manufacturers, and incident leaders.

During an incident:

• Identify affected devices and clinical services
• Assess patient safety risks before isolating equipment
• Coordinate containment with clinical and technical teams
• Preserve logs and evidence for investigation
• Activate alternative clinical procedures when necessary
• Restore systems and verify their functionality before reuse

For example, immediately disconnecting a compromised patient monitor could interrupt vital sign monitoring. Clinical staff must help determine the safest response.

10. Establish Joint Cybersecurity Governance and Lifecycle Oversight

Cybersecurity teams, clinical engineers, manufacturers, procurement staff, and leadership need clearly assigned responsibilities throughout each device's lifecycle.

Define accountability for procurement, installation, monitoring, updates, access approvals, and retirement. Track inventory accuracy, unresolved vulnerabilities, vendor access, remediation time, and recovery performance. Use these findings to improve security practices and address remaining risks.

Strengthen Healthcare IoT Infrastructure Security With Medysec

Security testing is an important part of medical device development, particularly when products connect to hospital networks, mobile applications, or cloud services. Manufacturers need to identify vulnerabilities, address security concerns, and maintain the technical evidence required for regulatory submissions.

Medysec works with medical device manufacturers and MedTech developers to assess the security of connected products. Its penetration testing services examine hardware interfaces, firmware, wireless communication, applications, APIs, and cloud systems for exploitable vulnerabilities.

We also supports FDA premarket cybersecurity activities, including threat modeling, risk assessments, SBOM preparation, penetration testing, and submission documentation. For devices already on the market, Medysec assists with vulnerability assessments, remediation planning, and cybersecurity records. Its services also cover applicable EU medical device cybersecurity documentation.

Manufacturers can use these assessments to understand product security gaps, plan necessary corrections, and support regulatory submissions with relevant technical evidence.

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Conclusion

A vulnerability in one connected system can affect several parts of a hospital's infrastructure. That is why healthcare iot cybersecurity organizations need to secure medical devices, networks, applications, and supporting systems together.

Accurate asset inventories, regular vulnerability assessments, restricted access, and tested incident response plans help reduce these risks. However, security changes must account for device limitations, clinical workflows, and patient safety.

As hospitals introduce new technologies and maintain existing equipment, regular security reviews can help identify weaknesses before they interfere with patient care or essential medical services.

FAQs

1. What are the biggest cybersecurity risks in healthcare IoT infrastructure?

Major risks include outdated device software, weak authentication, insecure network connections, ransomware, and third party vulnerabilities. Poor device visibility and unsecured communication channels can also expose clinical systems to attacks that disrupt healthcare services.

2. How does network segmentation reduce healthcare IoT security risks?

Network segmentation limits communication between medical equipment, administrative systems, and other connected devices. By controlling which systems can communicate, hospitals can reduce unauthorized access and prevent attackers from easily reaching critical clinical infrastructure.

3. Can healthcare organizations secure medical IoT devices that cannot be patched?

Yes. Hospitals can reduce exposure through network isolation, restricted access, passive monitoring, and other compensating controls. These measures help protect unsupported equipment, although they do not eliminate the underlying software vulnerabilities.

4. How often should healthcare organizations conduct IoT security risk assessments?

Assessments should follow a schedule based on device criticality and organizational risk. Hospitals should also reassess affected systems after major infrastructure changes, newly disclosed vulnerabilities, security incidents, or changes that could affect patient safety.

5. What role does penetration testing play in healthcare IoT infrastructure security?

Penetration testing helps identify exploitable weaknesses in medical devices, applications, APIs, and connected infrastructure. Testing should follow an approved scope and appropriate clinical safeguards, particularly when equipment supports essential patient care.