Principles of information security lecture

Administrative controls form the framework for running the business and managing people. The sophistication of the access control mechanisms should be in parity with the value of the information being protected; the more sensitive or valuable the information the stronger the control mechanisms need to be.

An important logical control that is frequently overlooked is the principle of least privilege, which requires that an individual, program or system process not be granted any more access privileges than are necessary to perform the task.

Need-to-know helps to enforce the confidentiality-integrity-availability triad. The three types of controls can be used to form the basis upon which to build a defense in depth strategy. Organizations can implement additional controls according to requirement of the organization.

DoCRA helps evaluate safeguards if they are appropriate in protecting others from harm while presenting a reasonable burden.

The first step in information classification is to identify a member of senior management as the owner of the particular information to be classified. Passwords, network and host-based firewalls, network intrusion detection systems, access control listsand data encryption are examples of logical controls.

So, armed with these higher-level principles, IT security specialists have come up with best practices to help organizations ensure that their information stays safe. Access control is generally considered in three steps: White, Green, Amber, and Red. This requires information to be assigned a security classification.

This is called authorization. They also monitor and control access to and from such facilities and include doors, locks, heating and air conditioning, smoke and fire alarms, fire suppression systems, cameras, barricades, fencing, security guards, cable locks, etc.

IT security is as much about limiting the damage from breaches as it is about preventing them. An important physical control that is frequently overlooked is separation of duties, which ensures that an individual can not complete a critical task by himself. The access privileges required by their new duties are frequently added onto their already existing access privileges, which may no longer be necessary or appropriate.

Security is a constant worry when it comes to information technology. Both perspectives are equally valid, and each provides valuable insight into the implementation of a good defense in depth strategy.

Run Frequent Tests Hackers are constantly improving their craft, which means information security must evolve to keep up. The classification of a particular information asset that has been assigned should be reviewed periodically to ensure the classification is still appropriate for the information and to ensure the security controls required by the classification are in place and are followed in their right procedures.

Different computing systems are equipped with different kinds of access control mechanisms. It considers all parties that could be affected by those risks. Before John Doe can be granted access to protected information it will be necessary to verify that the person claiming to be John Doe really is John Doe.

This means that the information is accessible when authorized users need it. Use qualitative analysis or quantitative analysis. IT Security Best Practices There are many best practices in IT security that are specific to certain industries or businesses, but some apply broadly.

Information security

Some of the lower-priority systems may be candidates for automated analysis, so that the most important systems remain the focus. Authentication[ edit ] Authentication is the act of verifying a claim of identity. The access to information and other resources is usually based on the individuals function role in the organization or the tasks the individual must perform.

However, like many tasks that seem complex at first glance, IT security can be broken down in to basic steps that can simplify the process.Principles of Information Security, Fifth Edition 7 This preview has intentionally blurred sections.

Sign up to view the full version. At the core of information security is information assurance, the act of maintaining the confidentiality, integrity and availability (CIA) of information, ensuring that information is not compromised in any way when critical issues arise.

Principles of Information Systems Security. Information security is the protection of information and it is critical elements, including the systems and hardware that used, store, and transmit that information, Thus, assuring the security of utility services are critical elements in information system.

4. Sep 30,  · INTRODUCTION TO INFORMATION SECURITY PPT INTRODUCTION TO INFORMATION SECURITY PPT Instructor: Dr. S. Srinivasan Principles of Information Security, 2 nd Edition, Michael E. Whitman and Software Engineering Lecture slides Lecture 1, Introduction to Software Engineering.

INFORMATION SECURITY LECTURE NOTES (Subject Code: BIT ) for Bachelor of Technology in Information Technology Department of Computer Science and Engineering & Information Technology Veer Surendra Sai University of Technology (Formerly UCE, There are five principles of security.

They are as follows. mi-centre.comation Security Governance and the Law Learning objectives of this chapter: Principles and practices of information security governance.

Relevant policies and pro.

Principles of information security lecture
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