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Access Control Models - DAC, MAC, RBAC , Rule Based & ABAC

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Identity and Access Management is an extremely vital part of information security. An access control model is a framework which helps to manage the identity and the access management in the organization. There are 5 main types of access control models: discretionary, rule-based, role-based, attribute-based and mandatory access control model. Every model uses different methods to control how subjects access objects. While one may focus on rules, the other focus on roles of the subject. As a security professional, we must know all about these different access control models. While one company may choose to implement one of these models depending on their culture, there is no rule book which says that you cannot implement multiple models in your organization.
These models are built into the core or the kernel of the different operating systems and possibly their supporting applications. Every operating system has a security kernel that enforces a reference monitor concept, which differs…
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Understanding Security Modes - Dedicated , System high, Compartmented , Multilevel

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Imagine a system that processes information. This information is classified in nature. When we say, its classified, it means that the information has been labeled according to the data classification scheme finalized by the organization. This scheme can be company specific, such as public, internal and confidential or military/government specific such as Confidential, Top Secret, Secret, Public. As a general user or a security professional, you would want that proper controls to be implemented and the system to be secure that processes such information. Imagine a scenario where such a malicious user tries to access this information. What clearance must this person have? Will he/she have access to all classified levels?
Hey!!, stop imagining. Let’s discuss something else now. Hold on, I know, I had asked you to imagine the scenario above. But answers to all your questions would follow, so keep on reading further. We need to learn and understand a few terms before we are ready to hear …
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Identification, Authentication, Authorization, and Accountability

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The 4 steps to complete access management are identification, authentication, authorization, and accountability. Many confuse or consider that identification and authentication are the same, while some forget or give the least importance to auditing. These are four distinct concepts and must be understood as such.
Identification
Whenever you log in to most of the websites, you submit a username. In case you create an account, you are asked to choose a username which identifies you. This username which you provide during login is “Identification”. It is simply a way of claiming your identity.
From an information security point of view, identification describes a method where you claim whom you are. If you notice, you share your username with anyone. Your email id is a form of identification and you share this identification with everyone to receive emails. This means that identification is a public form of information.
Authentication
So now you have entered your username, what do you …
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How to Pass SSCP Exam in the First Attempt

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Systems Security Certified Practitioner (SSCP) exam is offered by (ISC)2. When I prepared for this exam, there was hardly any material for preparation or blog posts to help me understand the experience of this exam. In this blog post, I will try to explain to you how to study for this exam and the experience of this exam. 
Before I begin, let me congratulate on your journey to becoming an SSCP. Although this certification may not be highly recognized as the CISSP certification, still it shows your employer and the world that you are really interested to pursue your career in this field. You become a practitioner in this field.
What is SSCP?
You would like to read CISSP vs SSCP in case you want to have a comparison between the exams. SSCP is a 3-hour long examination having 125 questions. You are required to score a minimum of 700 out of 1000. 25 questions are not graded as they are research oriented questions. It is important to note that since these questions are not graded, you need …
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Quick Tips for SSCP Exam

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Let me say “All the best” to you, before I start giving you tips for the SSCP exam. These tips are not mandatory to follow, but will surely help you to manage and crack the exam.
Systems Security Certified Practitioner (SSCP) is a three-hour long exam which contains 125 questions. You can call this as the younger brother of CISSP. I gave this exam in July 2014 and passed in the first attempt.
You have to schedule an exam through (ISC)2  website which further takes you to booking the exam at a Pearson Vue center. Reach the exam center approximately 45 minutes in advance before your scheduled time. This will help you to settle down. Start early so as to reach early rather than waiting on the way thinking whether you will reach on time or not.When you will reach the Pearson Vue center, you will be given a set of instructions to read. These instructions are different from the NDA to be signed for the SSCP exam. In case you have any queries regarding the instructions, feel free to ask the pr…
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