Computer Security Essay Example | Topics and Well Written Essays - 750 words - 4

Computer Security - Essay Example Keeping in mind the situation described above publication of a patch and providing technical information about vulnerability during disclosure can enable user’s to take protective and preventive action. CERT, a federally funded quasi government organization, is a key player in the domain of vulnerability disclosure and prioritizes in the publication of preventive measures, such as a patch, in their disclosures. There are certain issues that revolve around the disclosing of vulnerability information. These are regarding the timing of the release of patches which is made critical once vulnerability is disclosed. However the development of these patches takes time. This component clashes with that of instant disclosure, which leaves users defenseless against attackers who can exploit the disclosed vulnerability in the time that it takes for a patch to be released. These are the two critical dimensions that an optimal disclosure policy addresses. For the development of an optimal patch notification policy it is important to estimate the attacker’s and vendor’s behavior. If the vendors do not act quickly to instant disclosure then the formulation of a policy which incorporates this behavior will be strongly discouraged socially unfavorable. But even if vendors develop a patch quickly there lays a need to know how the attacker’s probability of attack changes with the disclosure, and with the patching. Other critical elements that the policy incorporates are a thorough investigation of vulnerabilities that are more likely to be exploited by attackers and hence require immediate attention. These are the ones that the vendor’s need to concentrate on developing patches for. Keeping in mind all these area’s of concern we develop a optimal patch notification policy that balances the issue’s mentioned above. Simply because a vendor releases a patch more quickly due to an early disclosure does not necessarily make this action optimal. Using a game theoretic model Arora, Telang and Xu (2003) show that neither instantaneous disclosure nor secrecy policy is optimal. An optimal patch publication policy depends upon underlying factors like how quickly a vendor’s response is in releasing patches, and how likely attackers are to find and exploit unpatched vulnerabilities. Q2: Here we consider the incentives of the attackers as well as the parties listed previously. What are the incentives of attackers? When we look at the internet we see how it has developed into a global system of interlinked computer networks which have made possible the exchange of information between millions of organizations. It has made possible new forms of social interactions as well as means to probe them. The internet is a unique tool for studying the development and the organization of a complex system. This is why numerous attackers are attracted towards the use of methods to hack into and manipulate various online systems. T here are many classifications of hackers based on the incentives behind their attacks. There are the early gentle hackers, who break into systems to demonstrate their skills. Then there are the ‘black hats’, which might have been gentle hackers at some point but then are motivated to make money as part of an explosively booming business based on ever-present internet insecurity. Moving

Analysis of Literary Criticism about Oranges of Gary Soto Research Paper

Analysis of Literary Criticism about Oranges of Gary Soto - Research Paper Example In his narrative, the poet actually steps in adolescence when he buys something for her girl by taking a chance. He offers an orange and a nickel to the saleslady for the bar of chocolate that the girl chooses. This is a critical point in the life of the boy and the climax in the poem because it creates uncertainty whether the saleslady will accept it or not. Once his offer is accepted, the boy comes out of the superstore triumphantly and enjoys his time with the girl. Although his courage is impressive, the risk was also a safe and intelligent bet: If the saleslady had refused to honor his orange for payment, he would still have the two oranges to share with the girl on their way home. Either way, he proves himself and impresses the girl which was the goal in the first place, and he is rewarded for his bravery by being allowed to hold her hand on the walk home. (White, 123) The poem is divided into two parts- before and after going in the superstore. The tone of the poem and the att itude of the boy have drastically changed. The tension or coldness between them is replaced by warmth and the scenery transforms dramatically. â€Å"Someone might have thought/ I was making a fire in my hands.† (55-56) the poet’s wish has been granted and suddenly the dullness of December as signified by fog and old coats is brightened up with the oranges. The color of orange stands out sharply in contrast to gray December; in fact it even looks like fire. Fire is the antithesis of frost, which was mentioned in the first part of the poem. Frost and crackling ice represent the absence of emotions or passions; but by the end of the poem, the boy earned warmth which is represented by the color of the oranges. In the first part of the poem, when the boy is entering the superstore, he notices a â€Å"used car lot† (18) which represents emptiness and stillness. The emotional state of the boy is empty and still. This condition is transformed in the second part of the p oem where â€Å"A few cars hissing past† (43) denote the movement or transition in the stage of life of the boy. He moves on in life without looking back at it with awkwardness, as he â€Å"finds a new sense of confidence and independence.†(White, 121) The poetic language used in the poem is simple and based on a trivial, everyday experience of a young boy. The language is also kept simple because it is stored in the memory of a person, when he was young- merely 12 years old. His memories are captured in a rather simple manner that makes it easy for the readers to compare or relate their experiences with his. Imagery and symbolism are used extensively by Soto to describe the entire scenery and situation. The boy recalls his vivid memories of walking for the first time with a girl. This shows how important it is for anyone at this age to feel love for the first time. The poet is aware of the external scenes and captures them in his memory- he is aware of all the sights and sounds of the gray December and slowly he starts noticing the various colors that light up his mood and his surroundings. The yellow light in the porch, the color of rouge on the cheeks of the girl, newly planted trees are some of the things that visually describe the scenery. Apart from this, sound imagery also brings to life the entire scene to the readers, as they read the phrases: Frost cracking; a dog barked; the tiny bell; and a few