An architecturally secure system does not depend on a single feature for protection. One of the jobs of a Trojan horse is to replace a program with one that can be used to attack the system.
Protecting data is the objective of every information security program.
Check out just about any piece of modern enterprise software. When Security Through Obscurity is applied, known bugs are kept secret so that they cannot be used by intruders. There's millions of them—you'll get something wrong. The situation can be difficult for a bank if the customer could not access their accounts for transactions.
Understand risk management and how to use risk analysis to make information security management decisions. Availability, meaning that the assets are accessible to the authorized parties in a timely manner as determined by the systems requirements.
In a world where massively distributed systems are pervasive and machines with multiple processors are the norm, this principle is a doozy to think about. From Building Secure Software, "One final point to remember is that trust is transitive. Generally, that means that a perfectly secure system does not exist — or that, if it does, you cannot use it for anything practical.
This is why one of the biggest challenges in IT security is finding a balance between resource availability and the confidentiality and integrity of the resources. Knowing how to assess and manage risk is key to an information security management program.
This is a principle behind real-world security, and it holds for software security, too. Principles of Security Important principles may, and must, be inflexible.
Confidentiality is probably the most common aspect of information security. Hold principals responsible for their actions. Think hackers are all bad. Untested or unplanned changes could introduce vulnerabilities that, when exploited, lead to a breach. A few security principles are summarized here.
Prefer mechanisms that are simpler and smaller. Aug 03, · Security principles such as confidentiality, integrity, and availability – although important, broad, and vague – do not change. Your application will be the more robust the more you apply them.
For example, it is a fine thing when implementing data validation to include a centralized validation routine for all form input. In and revised inthe OECD's Guidelines for the Security of Information Systems and Networks proposed the nine generally accepted principles: awareness, responsibility, response, ethics, democracy, risk assessment, security design and implementation, security management, and reassessment.
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Essential Skills for a Successful IT Security Career Learn the fundamentals of computer and information security /5(28). Principles of Security. Important principles may, and must, be inflexible. —Abraham Lincoln.
We'll talk a lot about vulnerabilities and countermeasures, about policies and mechanisms, about securing software systems throughout the semester. Here are underlying principles for building secure systems. Rather, done properly, security is a logical attempt to apply well-defined goals and principles to the practical effort of keeping a system safe from harm.
If security sometimes seems overly strict, or even arbitrary, the reason is that any use of a system is a potential risk. Security Principles There are many general security principles which you should be familiar with; one good place for general information on information security is the Information Assurance Technical Framework (IATF) [NSA ].Principles of security