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Web Application Security - Term Paper

(2) Encryption and Trusted Base. HCOs are struggling with rapid changes in the systems they need to secure. Early HCO computing systems used mainframe computers that could be accessed from terminals located in a hospital facility. This trusted base was relatively easy to secure until the Internet offered remote access, but standard enterprise protections such as firewalls were accepted as being sufficiently effective. Now the situation is increasingly complicated by technology changes such as: Bring Your Own Device (BYOD) arrangements in which HCO employees put sensitive data on their own cell phones and tablets, the use of cloud services in which Electronic Health Records (EHRs) are held by third parties, participation in HIE systems that move data between a changing collection of HCOs, and the deployment of patient portals, which provide a new attack surface for access to the EHR. Encryption is a powerful tool for addressing challenges with trusted base. For instance, if the data stored on a lost laptop or maintained by a compromised cloud service is encrypted, the threat of a privacy compromise is greatly reduced. Research is needed to make such strategies efficient and convenient enough to enable their universal deployment, particularly to protect data at rest (that is, in storage). These problems and the required solutions also apply to secondary use data for medical research or public health. Another area of concern is the rise of Advanced Persistent Threats (APTs), which entail sophisticated attacks, possibly supported by foreign governments. While these attacks do not currently target EHRs, they are creating significant levels of collateral damage to EHR systems, especially when such systems are attached to certain types of targets like government and university networks.

(3) Automated Policy. A key challenge faced by many HCOs is the need to share EHRs securely though HIEs such as those being set up by many states and regions, and the need to share them though rapidly evolving partnerships with various business associates. Current techniques are too informal and manual to provide the desired efficiency and convenience. For instance, if it is necessary to get an attorney to review each interstate data exchange, then a high level of exchange of EHR data will lead to a high level of expense (and delayed access). Enabling computers to settle policy decisions automatically can lead to reduced costs, improved care (though timely information exchange), and better support for secondary use of data. Research is needed to determine reliable ways to express policies. We also require strategies to integrate and enforce formally expressed policies into common HCO and HIE information architectures. Such advances will touch on other important areas like legal and medical ontologies and will inform the development of legal codes and consent management in the future.

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Web security is the essential problem of the modern civilization, because nearly everyone keeps the most essential information in the Internet and everyone wants his data to be protected effectively. A web security term paper is the research of the problem from various points of view.

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Effects of climate change on food safety may be highly localized, with the foods most at risk being those produced in areas undergoing rapid environmental change, agricultural adaptation, or mitigation. Individuals from vulnerable groups where dietary intakes are already suboptimal (e.g., persons with low incomes, migrant workers) and nutrient density requirements are elevated (e.g., pregnancy, childhood, old age) also may be at increased risk. As mitigation against climate change, individuals may start to consume food produced with lower-GHG emissions. Such changes imply lower red meat and dairy consumption, which would have positive effects in terms of lower rates of cardiovascular disease but may result in higher prevalence of iron and zinc deficiencies. Consumption of more locally produced and seasonal food may lead to insufficient fresh fruit and vegetable intakes at various times of the year in temperate countries. Developed countries have monitoring structures and policies that may limit potential effects of climate change on food safety. We suggest that the structures in place to respond to nutritional challenges are less robust, especially due to the potential conflicts between public health and industry.

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Research Papers Web Services Security


Essay about Web Application Security - 1495 Words

(6) Data Segmentation and De-Identification. It is widely recognized by both HCOs and government regulators that patients feel that some types of health data are especially sensitive. Examples include records related to mental health, drug abuse, genetics, sexually transmitted diseases, and more. When health data is shared, there is a desire to transmit this information only when it is necessary. For example, a provider who needs immunization records may not need to see mental health notes. Interest in how to perform this kind of data segmentation has intensified with the growth of HCOs and the introduction of HIEs. However, there is little understanding of exactly how this type of segmentation can deliver meaningful privacy with acceptable impact on the safety and quality of care. Vendor products that claim to segment data may mislead patients and caregivers if they are poorly designed. A technology closely related to data segmentation is de-identification, wherein records are transformed so it is difficult to determine whether a given record is associated with a given individual. The data segmentation problem needs some of the rigor that has been applied to the de-identification problem. In particular, we require ways to measure the tradeoffs between privacy, safety, and quality. These measures should be used to determine tradeoffs for specific segmentation technologies. The de-identification problem itself also faces new challenges such as how to protect privacy of genomic data. New techniques are emerging in this area, but new research is required to determine information flows and privacy risks and to design sufficiently efficient protective measures.

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Given the significant uncertainty about potential effects of climate change on food security, we recommend further research to quantify possible impacts on nutrition and food safety, including effects resulting from increasing food prices and changes in consumer behavior. In addition, it is important to maintain and strengthen existing structures and policies to regulate food production, monitor the quality and safety of food, and respond to nutritional or safety issues that arise. Climate change also may require enhanced use of emerging risk identification systems to detect new food safety problems at the earliest opportunity. Environmental and health sectors must work together to take advantage of areas of common ground (e.g., promoting reduced red meat consumption to lower GHG emissions and reduce the incidence of ischemic heart disease) and resolve potential conflicts (e.g., greater consumption of seasonal food to lower GHG emissions conflicting with health goals for year round consumption of fruit and vegetables). Such cooperation is essential to provide consistent health and environmental messages to the public and develop suitable interventions.

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