29,253 research outputs found
CamFlow: Managed Data-sharing for Cloud Services
A model of cloud services is emerging whereby a few trusted providers manage
the underlying hardware and communications whereas many companies build on this
infrastructure to offer higher level, cloud-hosted PaaS services and/or SaaS
applications. From the start, strong isolation between cloud tenants was seen
to be of paramount importance, provided first by virtual machines (VM) and
later by containers, which share the operating system (OS) kernel. Increasingly
it is the case that applications also require facilities to effect isolation
and protection of data managed by those applications. They also require
flexible data sharing with other applications, often across the traditional
cloud-isolation boundaries; for example, when government provides many related
services for its citizens on a common platform. Similar considerations apply to
the end-users of applications. But in particular, the incorporation of cloud
services within `Internet of Things' architectures is driving the requirements
for both protection and cross-application data sharing.
These concerns relate to the management of data. Traditional access control
is application and principal/role specific, applied at policy enforcement
points, after which there is no subsequent control over where data flows; a
crucial issue once data has left its owner's control by cloud-hosted
applications and within cloud-services. Information Flow Control (IFC), in
addition, offers system-wide, end-to-end, flow control based on the properties
of the data. We discuss the potential of cloud-deployed IFC for enforcing
owners' dataflow policy with regard to protection and sharing, as well as
safeguarding against malicious or buggy software. In addition, the audit log
associated with IFC provides transparency, giving configurable system-wide
visibility over data flows. [...]Comment: 14 pages, 8 figure
Designing privacy for scalable electronic healthcare linkage
A unified electronic health record (EHR) has potentially immeasurable benefits to society, and the current healthcare industry drive to create a single EHR reflects this. However, adoption is slow due to two major factors: the disparate nature of data and storage facilities of current healthcare systems and the security ramifications of accessing and using that data and concerns about potential misuse of that data. To attempt to address these issues this paper presents the VANGUARD (Virtual ANonymisation Grid for Unified Access of Remote Data) system which supports adaptive security-oriented linkage of disparate clinical data-sets to support a variety of virtual EHRs avoiding the need for a single schematic standard and natural concerns of data owners and other stakeholders on data access and usage. VANGUARD has been designed explicit with security in mind and supports clear delineation of roles for data linkage and usage
Compliance of Open Source EHR Applications with HIPAA and ONC Security and Privacy Requirements
Electronic Health Records (EHRs) are digital versions of paper-based patient\u27s health information. EHR applications are increasingly being adopted in many countries. They have resulted in improved quality in healthcare, convenient access to histories of patient medication and clinic visits, easier follow up of patient treatment plans, and precise medical decision-making process. EHR applications are guided by measures of the Health Insurance Portability and Accountability Act (HIPAA) to ensure confidentiality, integrity, and availability. However, there have been reported breaches of Protected Health Identifier (PHI) data stored by EHR applications. In many reported breaches, improper use of EHRs has resulted in disclosure of patient’s PHI data. Inefficient application design threatens the integrity of EHRs, which leads to fraud and endangering patient\u27s health. The goal of this paper is to identify HIPAA technical requirements, evaluate an open source EHR application (OpenEMR) for security vulnerabilities using an open-source scanner tool (RIPS), and map identified vulnerabilities to HIPAA technical requirements
The Value of User-Visible Internet Cryptography
Cryptographic mechanisms are used in a wide range of applications, including
email clients, web browsers, document and asset management systems, where
typical users are not cryptography experts. A number of empirical studies have
demonstrated that explicit, user-visible cryptographic mechanisms are not
widely used by non-expert users, and as a result arguments have been made that
cryptographic mechanisms need to be better hidden or embedded in end-user
processes and tools. Other mechanisms, such as HTTPS, have cryptography
built-in and only become visible to the user when a dialogue appears due to a
(potential) problem. This paper surveys deployed and potential technologies in
use, examines the social and legal context of broad classes of users, and from
there, assesses the value and issues for those users
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