Computer Security : Key Components Of Pc Security

One of the important part of system administration should be secure, so it is very important to understand which factors can affect security inside and outside our system. There are many key decisions that have to be made, for example, what server operating system should a system use to which

When a computer connects to a network and engages in communication with other computers, it is essentially taking a risk. Internet security involves the protection of a computer's Internet account and files from intrusion of an unknown user. Internet security has become an alarming issue for anyone connected to the net. This research paper argues the need for security over corporate intranets that have been dealing with the lack of security within the internet and the numerous attacks and malware threats that hackers use to breach security measures. A corporation uses a private computer network that uses Internet Protocol technologies to securely share any part of an organization's

In today’s IT world every organization has a responsibility to protect the information and sensitive data they have. Protecting data is not only responsibility of security and IT staff but every individual is involved in protecting the information. The risks to information security are not digital only, but it involves technology, people and process that an organization may have. These threats may represent the problems that are associated to complex and expensive solution, but doing nothing about these risks is not the solution.

Any enterprise has to pay special attention to computer security. Computer security is a field that is concerned with the control of risks related to computer use. A primary focus should be on the external threats to the computing environment. In enterprise with branches cross country, it is important to allow information from "trusted" external sources, and disallow intrusion from anonymous or non-trusted sources. In a secure system, the authorized users of that system are still

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.

Microsoft Windows has evolved into an operating system that is very reliable and dependable when it comes to getting task done on a daily basis when a computer system is needed. “In 1975, Gates and Allen form a partnership called Microsoft. Like most start-ups, Microsoft begins small, but has a huge vision—a computer on every desktop and in every home” (Microsoft.com). In this paper I will discuss the history of Microsoft’s Operating systems and security features available during each stage of advancement over the years.

The article, which addresses security loopholes in modern computing environments, by Loscocco et al highlights what is and has been being done security wise in the past and how secure these implementations were and going forward what should be done to ensure in depth security which guarantees system wide security (1998). The article first explains features of secure operating system and why current systems implemented under the notion of application space security ultimately failed to safe guard the integrity and confidentiality of our assets. The article then continued with general examples of access control and cryptography implemented in the application space with no or little support from operating system and showed their vulnerabilities to attacks such as tampering, bypassing and spoofing. The article supplied real-life examples to support the evidence that building security in the application space without secure operating system is meaningless. The article raised concrete examples on mobile code security, Kerberos network authentication service, IPSEC and SSL network security protocols and firewall. The paper finally put an interesting remark that security implemented in application space without secure operating system is like “building a house in a pile of sand” and it also emphasized that secure operating system without better security on the

Computers have become part of our daily complex lives; we depend heavily on computers to help break our complicated lives down. Most people now prefer to do things the digital way and so does companies. Most of trading (buying and selling) is now online which requires computers. In order to satisfy our hunger for digital living, there is a need for technology called the operating system to carry out the activities we require our computers to do. Computers and technology come in different forms and sizes and due to the capitalistic nature of our economy everyone is allowed to come up with their own form of computer and even the technology to run it. In recent years’ companies have gained interest doing business digitally and since software have become easier to write or code, it is also vulnerable- easy for programmers to access and exploit called hacking. Hackers are unapproved clients who break into a technological framework, change or decimate data, frequently by introducing hazardous malware without the insight and assent of the host company. Companies are now at risk of losing much more than money by doing business the digital way. It is in this view that the Security Exchange

Dr. Blahblah has implemented a system with an 8-bit random canary that is used to detect and prevent stacke-based buffer overflow attacks. Describe an effective attack against Dr. Blahblah’s system and analyse its likelihood of success.

Monitor all network traffic and alert personnel to suspected compromises using network intrusion-detection systems, host-based intrusion detection systems, and intrusion-prevention systems.

These proposals and systems suggestions can minimize the vulnerabilities associated with any compromises or intrusions within the network. Deploying an intrusion detection system is an essential security strategy for monitoring a network information system for abnormal or authorized activity. An intrusion detection system (IDS) is set of tools which monitor a network topology by providing a system administrator with the overall picture of how the system is being utilized. Executing an IDS will make a difference in creating a defense in depth architecture to be more compelling in recognizing any form of malicious activities. The capacity of the IDS is to monitor and survey the network traffic without affecting network activity. IDS tools gather information and analyzes it against a pre-characterized manage set, and against a set of known assault 'marks'. The IDS can scan port numbers and to determine if any breaches or attacks are occurring (Kuipers,

Information is the most valuable commodity that individuals and global corporations use to grow financially, economically, and independently. The protection and security of the information is essential. One of the most vital foundations of protection information is the authentication process. The authentication process is utilized to protect computer and network systems against various types of security threats, such as password-cracking tools, password dictionary attacks, mistreatment of user access rights, and any potential unauthorized attacked. Understanding how to authenticate users and the accessible information that is readily available on system networks can help prevent future issues as well as provide insight into the developmental process for new systems. In addition, authentication is simply determining whether someone or some machine is, in fact, who or what they declared there to be. This process directly reflects on and correlates to the readiness and ease of access to information and the protection of it.

Most of the computer crimes are usually committed by trusted personnel and are authorized to use the system. It is therefore necessary to form a computer security system, taking into account the actions of such possibilities.

Enterprises arrange numerous distinct software and device with their own interface and managing login and comfort. Soon they find that these resolutions convert unmanageable. There are several things to arrange so safety platforms are fundamentally likely to error. An incorrect management safety platform can be a big problem than none at all. Firewall utilizations growth the safety by tumbling the difficulty.

The steps to ensure that information is protected is the basis for this paper. I will cover protecting the operating systems through security concepts. First, I will explain the process of protecting Operating systems Kernel, Secondly, I will discuss implementing Access Control Third l will focus on. Patch Management, Forth I will rank the measure explain in this paper based on the most appropriate action.