Introduce the concept of using information security models (why are they important). Two fundamental concepts in computer and information security are the security model, which outlines how security is to be implemented. Basically providing a blueprint and the architecture of a computer system, which fulfills this blueprint. A security model is a statement that outlines the requirements necessary to properly support and implement a certain security policy. A security model provides a deeper explanation of how a computer operating system should be developed to properly support a specific security policy (Whitman, 2014).
Explain that some security architecture models are implemented into computer hardware and software, some are implemented as policies and practices, and some encompass both Information security is made up of three main attributes: Availability is the prevention of loss of access to resources and data. Integrity is the prevention of unauthorized modification of data, and Confidentiality is the prevention
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It uses a state machine model and is very similar to the Bell-LaPadula model. Biba addresses the integrity of data being threatened when subjects at lower integrity levels are able to write to objects at higher integrity levels and when subjects can read data at lower levels. If implemented and enforced properly, the Biba model prevents data from any integrity level from flowing to a higher integrity level. Biba has two main rules to provide this type of protection. The first rule, referred to as “no write up,” states that a subject cannot write data to an object at a higher integrity level. The second rule, referred to as “no read down,” states that a subject cannot read data from a lower integrity level. This second rule might sound a little goofy, but it is protecting the subject and data at a higher integrity level from being corrupted by data in a lower integrity level (Whitman,
The integrated threat theory model consists of four types of threats that can lead to prejudice. These threats are: realistic threats, symbolic threats, intergroup anxiety, and negative stereotypes. Realistic threats are posed by the outgroup and have several types of consequence and impact. They can either be threats of war, threats to political and/or economic power of the ingroup, and threats to physical and/or material well-being of the ingroup and its members. Symbolic threats is usually based on perceived group differences in morals, values, standards, beliefs, and attitudes. Symbolic threats are also threats to the ingroup’s worldview and these threats arise because the ingroup believes that its system of values are morally correct.
Security architecture is a major component and part of a system’s architecture and is usually designed to provide important guidance during the development of the system. It usually outlines the assurance level required and in the process outlines the possible impacts that this level of security might have on the development process of the actual system. Since security is a major component for the success of any given business unit, it is necessary to have a fully functional and operative security system that meets all the necessary requirements for any organization. Some leading business firms are usually faced with the task of achieving and maintaining high security measures and methods. SecureTek one of the leading provider of security solutions is faced with the challenge of redesigning their security architecture to assure security to the data and the other firm’s valuable assets as well as ensuring security to their customers and employees who encounter risky situations when visiting this business unit.
Security helps the organization meet its business objectives or mission by protecting its physical and financial resources, reputation, legal position, employees, and other tangible and intangible assets through the selection and application of appropriate safeguards. Businesses should establish roles and responsibilities of all personnel and staff members. However, a Chief Information Officer should be appointed to direct an organization’s day to day management of information assets. Supporting roles are performed by the service providers and include systems operations, whose personnel design and operate the computer systems. Each team member must be held accountable in ensuring all of the rules and policies are being followed, as well as, understanding their roles, responsibilities and functions. Organizations information processing systems are vulnerable to many threats that can inflict various types of damage that can result in significant losses (Harris, 2014). Losses can come from actions from trusted employees that defraud the system, outside hackers, or from careless data entry. The major threat to information protection is error and omissions that data entry personnel, users, system operators and programmers make. To better protect business information resources, organizations should conduct a risk analysis to see what
Whitman, M. E., & Mattord, H. J. (2011). Principles of information security. Boston, Mass: Thomson Course Technology.
Gibson, Darril. Understanding The Security Triad (Confidentiality, Integrity, and Availability). Pearson IT Certification. 2011. http://www.pearsonitcertification.com/articles/article.aspx?p=1708668
Due in Week Seven: Outline the Access Control Policy. Describe how access control methodologies work to secure information systems
Defense-in-depth involves using multiple layers of controls to avoid having a single point of failure. Computer security involves using a combination of firewalls, passwords, and other preventive procedures to restrict access. Redundancy also applies to detective and corrective controls.
The scope of IA has grown past just security concerns of traditional information systems. IA is information operations that protect and defend information and information systems by ensuring their availability, integrity, authentication, confidentiality, and nonrepudiation (CNSSI 4009, 2010). IA basic tenets of availability, integrity, authentication, confidentiality, and non-repudiation focus on the information not necessarily the mission. Protecting the information in information system can conflict with the successful completion of the mission. The operational necessity of assuring successful mission execution has generated a shi...
Information security and risk has become a priority for organization vying to protect a network and organizational data from unscrupulous entities (Zhao, Xue, & Whinston, 2013). In the operation of systems and/or processes, theoretical frameworks may be used to assist organizations in the development of security control measures that support the denial of threats such as phishing attacks and rootkit installations (Sun, Srivastava, & Mock, 2006). In addition, Sun et al. (2006) summarized that theoretical frameworks assist in methodologies associated with the identi...
Information security refers to “the process and methodologies that are designed and implemented to protect print, electronic, or any other form of confidential, private and sensitive information or data from unauthorized access, use, misuse, disclosure, destruction, modification, or disruption” (SANS Institute, n.d.). Information security programs are important in maintaining confidentiality, integrity, and availability (figure 1 page X). For example, a Trojan horse was planted on your system and result in the loss of customers’ personal and financial information. This failure to protect data will result in a loss, legal liability, and goodwill. In this scenario, both confidentiality and
Shreyas, Doshi. Software Engineering for Security: Towards Architecting Secure Software. University of California, Irvine, CA. 2001.
Privacy and Security are very important aspects in regards to computer databases and keeping them safe. Data Privacy is a way to keep your information secure, and keeping your information secure means it’s going to be kept private (vice versa). Information and data privacy is the relationship between gathering and classifying data and technologies while at the same time keeping them private in the context of the organization. While Computer security and IT security are defined as the means of security and how they translate to computers, their network infrastructures, and the data encompassing the databases that store this data and making sure they are kept safe and classified.
Nicholls and Stewart Ltd Handbook, requires appropriate administrative, physical and technical controls be incorporated into all new applications and modified applications. Security Application Systems must have security in place that encompasses not only the software, but the routine activities that enables the computer system to function correctly. These include fixing software or hardware problems, loading and maintaining software, updates to hardware and software and maintaining a historical record of application changes.
There are number of different models proposed as framework for information security but one of the best model is McCumber model which was designed by John McCumber. In this model the elements to be studied are organized in a cube structure, in which each axis indicates a dissimilar viewpoint of some information security issue and there are three major modules in each axis. This model with 27 little cubes all organized together looks similar like a Rubik's cube. There are three axes in the cube they are: goals desired, Information states, and measures to be taken. At the intersection of three axes you can research on all angles of an information security problem.
Computer security is the process of preventing and detecting unauthorized use of your computer. Prevention measures help to stop unauthorized users or intruders from accessing any part of a computer system. Detection helps one to determine whether or not someone attempted to break into a computer system, if they were successful, and what they may have done.