Cybersecurity Planning and Management

In 500 words, In your own words, explain what the following terms mean to you as they apply to information security and safe computing: Confidentiality, Integrity, and Availability. Why are these factors so important to businesses?

2.1 What are the essential ingredients of a symmetric cipher?

2.2 What are the two basic functions used in encryption algorithms?

2.3 How many keys are required for two people to communicate via a symmetric cipher?

2.4 What is the difference between a block cipher and a stream cipher?

2.5 What are the two general approaches to attacking a cipher?

2.6 Why do some block cipher modes of operation only use encryption while others use both encryption and decryption?

2.7 What is triple encryption?

2.8 Why is the middle portion of 3DES a decryption rather than an encryption?

Sample Solution

Cybersecurity Planning and Management

Information security is becoming increasingly important for both organizations and individuals. As information technology is becoming more and more complex, attempts to fraudulently use or steal data are doing so as well. This is why it is very important for information systems to be protected in the interests of cyber security. The CIA Triad of confidentiality, integrity and availability is considered the core underpinning of information security. Every security control and every security vulnerability can be viewed in light of one or more of these key concept. For a security program to be considered comprehensive and complete, it must adequately address the entire CIA Triad. Confidentiality means that data, objects and resources are protected from unauthorized viewing and other access. Integrity means that data is protected from unauthorized changes to ensure that it is reliable and correct. Availability means that authorized users have access to the systems and the resources they need.

different policies of other countries was conducted. Currently, the United States allows for pharmaceutical companies to control costs while many other governments around the world have chosen to do otherwise. Many countries have established single-payer systems or have chosen universal healthcare coverage. By definition, universal healthcare is a system that ensures that everyone has “coverage for basic health care services and no one is denied care as long as he or she remains legal residents in the given territory” (Torrey). On the other hand, single-payer systems refers to one designated body to be in charge of paying health care claims. Although universal health care coverage can be achieved through single-payer systems, it is not a requirement. Countries that currently have universal coverage include France, Denmark, Australia, Ireland, and Israel. Some countries that have single-payer systems include Norway, Japan, the United Kingdom, Sweden, Canada, Finland, and Spain (Montgomery). Table 1 below depicts several examples of the price differences of drugs in several of the countries mentioned.

Table 1. Average drug prices of drugs in USA, Canada, France, and Germany (2015).

For example, Actimmune is a drug used to prevent skin infections in patients with malignant osteoporosis and chronic granulomatous disease. The cost of this injectable medication is $52,321 for 12 vials in the United States while it is priced at $6,897 in the United Kingdom for the same amount (Nawrat).  The United Kingdom utilized the single-payer system to implement universal coverage for drugs; therefore, costs are negotiated down to what is deemed appropriate and feasible. Similar to the FDA, the European Commision approves drugs but what makes their system different is that they have a separate body called the National Institute for Health and Social Care Excellence (NICE) who is responsible for determining a drug’s cost effectiveness and clinical benefits(Nawrat).

Canada also utilizes a single-payer system for healthcare is therefore in control of the country’s drug prices (Amadeo). Canada established a Patented Medicine Prices Review Board that encourages pharmaceutical companies to suggest a price proposal for their manufactured drugs. This review board then compares the suggested price to various other countries with similar drugs. Approval is made depending on the cost of the drugs in other countries. Despite Canada’s single payer system, the country lacks universal drug coverage but due to their

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