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Industry Insight: Checking Up on Healthcare Security
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User Rank: Ninja
7/16/2019 | 10:05:22 AM
Are Hospitals part of GDPR?
From my understanding, most organizations are part of this GDPR group? Health care agencies have experienced a number of hacks where they have lost more PII data than any organizational group.

If this aspect is one of their main concerns, why don't they bring in third-party consultants to address some of their issues? A number of health-care agencies have a direct relationship with the university's CIS or IT divisions. It would make sense to tap into that knowledge base on campus (i.e. CIS - Computer Information Systems). The university's IT group could help address some of the IT security issues, not sure if they are but it would be interesting to see what they are doing to protect this data?

Please review the top NAC solutions (comparison listed below), it is imperative because NACs ensure isolated access to medical devices.

NAC Device Comparison Reference

Per the conversations on DR (Dark Reading), it is imperative to put the medical devices on their own network (network segmentation), then route all of the traffic from the various devices to managing switches (daisy chain or cluster them together). By isolating the traffic, the hospital could filter access to the medical devices (i.e. Med-Dev, made it up) to only to their management systems and staff, nothing else. This process could limit the external attack by reducing the hospital's attack surface. Also, I would suggest the following as a possible solution:
  • Enable IPv6 on the endpoint devices (ensure they come that way)
  • Enable IPv6 AES256 ESP/AH VPN connections to the devices (encrypt the traffic sessions)
  • Ask the vendor if there is a way to limit the traffic to the mgmt. servers to only allow certain ports or ask if the ports can be modified for NMS monitoring
  • Standardize equipment purchases but keep options open for enhanced or different versions
  • Create a test environment to monitor traffic to and from the NAC (Network Access Control) devices
  • Physically separate the guest network for waiting areas (isolate the production, device, mgmt, and admin network)
  • Harden the mgmt. servers and follow NIST 800-Rev4/5 guidelines

The vendor needs to support IPv6, most of the hack attempts identified have occurred on IPv4 and not IPv6 (Russia, China, North Korea, Iran, Japan).


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