Operating System Security ( Os Security ) Essay

A computer is secure if you can depend on it and its software to behave as you expect I this assignment I will writer about how Linux provides security to you information. The major technical areas of computer security are usually represented by CIA confidentiality, integrity, and authentication or availability. It means that information cannot access by unauthorized people.

1. The relative advantages and disadvantages of at least three different measures used to protect operating systems.

When installing any operating system regardless of whether it is a Linux or windows based operating system it is essential that steps are taken to ensure the security of the operating systems. Ensuring the security of an installed operating system before for it is put into use is known as system hardening. System hardening is done by taking known vulnerabilities in an operating system and making security enhancement to mitigate these vulnerabilities. Thus, it is important to know the vulnerabilities which are posed by each operating system and the ways in which they can be mitigate. Below are three common vulnerabilities in windows operating system and recommendations on how to mitigate them.

As such, he introduces a technique of identifying a spectrum of potential vulnerabilities and suggests procedures to deal with them. Systems Specification and High Order Language Implementation are categorized as items of high risk to attacks. Security Policy and Machine Language Implementation are classified as items of moderate risk of being vulnerable to attacks. Circuits Electronics and Device Physics are of low and very low risks respectively. He also discusses potential threats such as deceiving operating systems to grant access to file or data to unauthorized users through direct (overt) and indirect (convert) channels. Walker also says that lack of precise definition of trusted operating systems and the higher cost of building them are the significant drawbacks faced by the vendors. Vendors are concerned that if they build trusted operating systems, they might not be accepted by their customers. The only solution suggested by the author was to have someone or a company builds it, shares the technology used, and convinces the general public on the significance of it. Once it becomes accepted, then there will be a widespread use of trusted computer operating systems.

Protecting yourself is only effective if you know what you are protecting your against and how to protect. There are a couple ways to start getting you more protected. The first is installing the default operating system. This would have a default password, no security patches and no virus protection. The second thing you don't want to do is use simple and common passwords like for example, password. In the 10 immutable laws below, one of the laws is someone is always trying to guess your password so make sure it's unique. A third suggestion would be to keep as many ports that you don't need closed and a firewall can do this which is covered in the 3rd section on Security Technologies. Finally, make sure you don't click on any email that you don't recognize or looks suspicions. Many viruses get spread by opening emails or clicking on the link inside. This rule would help decrease the spread

Linux is a trademark owned by Linus Torvalds [1]. It is an operating system which is powerful, free and inexpensive to own based on UNIX [1]. It is a POSIX-compliant with versions available to install in cell phones, supercomputers and most computing systems [1]. Linux is an open source program as its source code is available to the general public for use and the right to modify from its original design without any charges [1]. New code will be added to the next version made available with Linux if it is accepted as a universal improvement [1]. The code will continue to exist and developed by the user even if the company fails [1]. Moreover, updates for Linux are available every six months [1]. Nowadays, Linux is in constant development by

There are simple steps that can be taken to make your computer safer. Every computer connected to a network is at risk of being attacked, but knowledge of each threat that can occur and knowing how to minimize your security risk can help in the setup of a new computer and the ones that you already have. With knowing how to prevent your computer from being attacked will help you in setting up accounts for social media as well because you will be able to tell what and who is harmful to your account.

This memo presents the plans for the revision of information security and computer usage polices for Technocracy. The memo will outline discovered security issues and new policies including additional steps, goals and obstacles when implementing them.

The software security is very important issue among all the software. All the software’s must have the good security in order to prevent it from the different attacks from the internet like the viruses and many other attacks online which can harm the computer sufficiently. The main purpose of the security of all the software’s is to avoid the malicious attack of the other things. The main thing is the function of the software for which it can be made. All the software’s are made up for the special purposes and they must be used for that purpose only in order to get the best results from them. but if you want to get a task done by a software which is not made for that particular task and that the does not allows you do that particular task, then you have change its code from the software is being made. This is where the software security comes into the consideration that whether the software is secured enough and does not allow the user to do that or it is east for the user to do that task and change the code. If the software security is not good, it means that anyone can change the main purpose of the software task and use it for the illegal tasks. In this way, it will because the problems for the owner of the software as software introduced by the producer must be secured. But if the software is well secured then, the no one will be able to change its main file and the software can only

Worms effect the computers that are on the same network. A worm will consume bandwidth and will spread to other computers on a network. Worms can also cause a server to crash or make a user’s files unusable or corruption. They can also create a backdoor on a target computer. Rootkit will run its utilities on your computer without your knowledge of it even being there, they are designed to avoid detection. A rootkit, like a worm, can also create a backdoor on target computers allowing a hacker to send things such as spam or emails that can use a target computer to perform a denial-of-service attack on servers. A zombies will open a backdoor on an affected computer to allow predators to use it for malicious purposes without the owner’s knowledge. A Browser hijacker has the ability to change a home page or search page in your browser. An email viruse can potentially harm a computer when an effected email is open opened. The mousetrap ping happens when a website uses a script preventing the Internet user from leaving a website. Last but not least, spam comes in the form of an email usually and it’s junk or bulk emails that come from random senders known as spammers.

This paper presents a description of an operating system security design that addresses the need for flexibility to control dissemination of usage rights, administration of fine-grained rights, and validates the reversal of prior access rights. The system that can handle this enormous task is the Flux Advanced Security Kernel (Flask) microkernel-based operating system architecture, according to research conducted by the National Security Agency (NSA) and researchers at the University of Utah. Based on the results of testing and observations, the Flask architecture prototype is flexible to operate and was found to be practical to apply. The Flask architecture proved capable of overcoming most obstacles to attain policy

A threat agent is the facilitator of an attack however; a threat is a constant danger to an asset.

When looking into the selection of an efficient and effective, secure operating system, each aspect must be taken into consideration. Many of the international companies have developed numerous actions for handling the operations in a beneficial way. The secure operating system offers enhanced security for the information stored at each company. It also is very helpful to protect the information of the customers. The key objective is to establish a Software Network Bridge that encourages the implementation of the Linux operating system in a useful way. It is well known that being able to implement a Linux operating system there must be a lot of focus on many different features..

Distributed operating system security is that of which security is implemented on a system of connected computers that share and run information. This type of security system is different than your average security features that a person may have on just a laptop or home computer system. The biggest challenge is keeping the information that flows in a distributed operating system safe, as well as protect against the multiple threats that security in a distributed operating system face. Its important to understand how a distributed operating system security works, as well as the many different types of threats that the distributed operating system security will face.

Computer is a somewhat complex machine. The world has become accustomed to so many choices. One of the major choices in the modern era is the “Operating System (OS)”. Operating systems are the central software component to any computer. The main brands of operating system are; Windows Mac OS, Sun Solaris, UNIX, DOS and Linux. Each brand has its own take on what makes up an operating system. Windows is the most commonly used operating system around the world. The most common advantage about Windows is its simplicity. It is now very easy for an inexperienced person to grasp the concept and use the computer with this operating system on it. Windows newest version is Vista and windows7. Vista has made