1 Overview
1.1 General
Many Personal Health Devices (PHDs) and Point-of-Care Devices (PoCDs) provide vital
support for people living with chronic disease or experiencing a life-threatening
medical event. Cybersecurity attacks on vulnerable devices may lead to the alteration
of prescribed therapy (e.g., sleep apnoea breathing therapy, insulin therapy) or to
information disclosure that results in insurance or identity fraud or in direct or
indirect patient harm. Companies subject to a successful cybersecurity attack may
suffer financial harm and a negative reputation.
Manufacturers of PHDs/PoCDs may be required to support application layer end-to-end
information security. PHD/PoCD data exchange may be conducted over an untrusted transport. Also, a requirement may
exist for multiple access control levels (e.g., restricted read access, restricted
write access, full read access, full write access, full control access). Most PHDs/PoCDs
have limited resources (e.g., processing power, memory, energy). Current standardized
PHD/PoCD data exchange assumes the exchange is secured by other means, such as secure transport
channel. This assumption requires that manufacturers define solutions by, for example,
extensions or using mechanisms on the transport layer. Such solutions limit the usage
of PHD/PoCD data exchange standards and restricts interoperability.
This standard is based on the PHD Cybersecurity Standards Roadmap findings (IEEE white paper [B10]) and defines a security baseline of application layer cybersecurity mitigation techniques
for PHD/PoCD interfaces.2 The mitigation techniques address an extended confidentiality, integrity, and availability
(CIA) triad and allow manufacturers to implement the most appropriate algorithms. The
mitigation techniques are not dependent on a specific risk management process. Instead
they are applicable to any approach, including the vulnerability assessment described
in IEEE Std 11073‑40101™ [B9]. In Figure 1, IEEE Std 11073‑40101 is depicted by the top row, and this standard is depicted by the bottom row.
