Introduction to Computers Malicious Software (Trojan horses)

Abstract The Trojan horse term emanates from some story in Homer’s Iliad, where the Greeks gave their foes a huge horse made of wood, apparently, as a symbol of offering. But, immediately after the Trojans draw the horse into the walls of the city, the solders in Greek creep out of the horse’s bellies which are seemingly hollow and unfasten the city gates, enabling their partners to sneak in and incarcerate Troy.Advertising We will write a custom term paper sample on Introduction to Computers Malicious Software (Trojan horses) specifically for you for only $16.05 $11/page Learn More Therefore, Trojan horses are simply undesired material or operations that are sneaked into firmware, software, hardware or wetware leading to undesired and/or unsuitable performance (DuBois, 2001). Detection of Trojan horses seems an almost unsolvable problem despite the fact that some inadequate analysis by use of mathematics has been applied in this area to pr ovide further clarity. This paper therefore seeks to provide more information regarding Trojan horses it begins by giving the techniques used by Trojan horses, then some ways to prevent them; thirdly, it gives some few examples of recent Trojan horses attacks and finally giving a summary and conclusion. Techniques used by Trojan horses Trojan horses depend mostly on users to set up them; alternatively, they can be set up by internal or external intruders who have gained illegal access by some way. Intruders that attempt to sabotage a system also depend on other users who run the Trojans to be triumphant. System users can also be fooled into setting up Trojan horses by simple means such as enticing of threats. A simple example is a Trojan attached to email with a pop up informing one that he/she has won a lottery such that a user attempts to claim the lottery and in that event installing the Trojan into the system (Fontes, Fontes, Purcell, Schulz, and Virgil., 2007). Some people migh t decide to use Software distribution websites to temper with real legitimate software versions with Trojans. In case the software distributers website is the main distribution point where other sites pick versions from, the Trojan horses would be spread so much fast thus affecting many systems within the internet community. Another loophole is the DNS which provides inadequate security, hence, users might be cheated into connecting to undesired websites. Intruders would then exploit them by making them download Trojan horses (Forrest Gross, 2004).Advertising Looking for term paper on it? Let's see if we can help you! Get your first paper with 15% OFF Learn More Trojan horses might also be injected into programs through compilers that are affected by the Trojans. They may also be placed into websites from where users can be cheated to download. The Trojans can take forms such as JavaScript, ActiveX, Java applets or executable files (Fontes, Fontes, Purcell, Schulz, an d Virgil., 2007). Recent scenario that involved Trojan horses Microsoft suffer attack During the fall 2000, attackers downloaded and modified the original code of an operating system designed for future use. This happened due to a Trojan concealing a worm a program component that copies itself onto other computers across a network. After being set up on a Microsoft computer, the code stretched until it located a machine that contained secrets worth pilfering. The Trojan then alerted its existence to an attacker, opening a loophole to the network (Forrest Gross, 2004). Techniques of preventing Trojan horses The most suitable method of protecting a system from Trojan horses’ attacks is avoiding them. Some other forms have been devised to try preventing Trojan attacks first; do not download unknowingly from websites or persons that you do not trust. You also should be aware of hidden file extensions windows operating system for example hides executables file extensions by defau lt. Second, familiarize your system users with regard to its dangers and ways to prevent them. And do not use program components that auto runs files however much convenience they may come with, they still can be harmful to ones system, for example, Trojans that might have infected removable storage media might automatically install themselves at the time of plug in. Thirdly, when online, for example, in chat rooms, do not type in commands that are recommended to you by others or run program files suggested by friends. Also be cautionary when dealing with ActiveX, JavaScript or Java applets controls from pages of websites. It is advisable to configure one browser to disable execution of files automatically. Fourthly, apply firewalls and virus protection software’s that adequately combat Trojan horses. Despite the fact that it might be difficult to detect all Trojan horses, the software’s will aid along way in combating them (DuBois, 2001). Conclusion Trojans reflect a great internal threat to the integrity of an institutions entire network. They seem pretty tough to detect as opposed to viruses and other malicious software since they are distributed alongside recompiled file name attributes. They may also vary from simple keystrokes log made on personal computers to fully developed remote control Trojans that affect commercial systems to look vague by giving some authority to compromised users who can temper with the entire network.Advertising We will write a custom term paper sample on Introduction to Computers Malicious Software (Trojan horses) specifically for you for only $16.05 $11/page Learn More Despite the security, mechanisms put in place close to all networks are exposed to weaknesses of human gullibility (Forrest Gross, 2004). Hence, all system users must consider the small mistakes we neglect since those are the loopholes that Trojans exploit. References DuBois, P. (2001). Trojan horses : saving the clas sics from conservatives. New York : New York Univ. Press. Fontes, J., Fontes, R., Purcell, G., Schulz, B. J., Virgil. (2007). The Trojan horse : the fall of Troy : a Greek legend. Minneapolis: Graphic Universe. Forrest, B., Gross, P. R. (2004). Creationism’s Trojan horse : the wedge of intelligent design. New York: Oxford University Press. This term paper on Introduction to Computers Malicious Software (Trojan horses) was written and submitted by user Celia Simmons to help you with your own studies. You are free to use it for research and reference purposes in order to write your own paper; however, you must cite it accordingly. You can donate your paper here.

Boat Slip Terminology and Use

Boat Slip Terminology and Use There are many terms for parts of a boat, the way a boat is operated, and the facilities used to store and service a boat. Wow, it’s a lot to learn and many of the people you encounter expect you to know all of these things. If you want to get a good start in the marine industry, a recreational facility is a great place to start. For the best chance of getting one of these jobs, you should know something about boat slips and dockage. An administrative person can fill a couple of sentences with enough terminology to confuse anyone who is more familiar with dry land than open waters. This can happen when you first start out your marine career adventure. It will also occur when you venture out to neighboring ports as you become more versatile. Of course, you know your own home base marina and slip configuration, but can you understand questions marina staff might ask while traveling? Is the slip appropriate for your needs? On which side will you tie up? What tying fixtures are present? What kind of improvements need to be made? Don’t worry it’s all fairly easy to understand. Dock Structure Large dock facilities are made up of one or more main docks connected to a face wall on shore. They come in two types, fixed and floating. Floating docks are usually connected to shore with hinged ramps which allow the docks to rise and fall with tides or changing water levels. Fixed docks are firmly attached to the shore and to support structures that are anchored underwater. The main docks project out from the face wall and each main dock hosts many smaller and narrower docks called finger piers. These finger piers divide the slip areas and provide a way to walk from the boat to the main dock. At the end of each finger pier and along the main dock are tall posts called piles. One or two extra piles also divide the area between two finger piers. These piles are only for tying, they dont carry a finger pier. Rarely, a slip will have a finger pier on each side of the slip space, but most facilities use the more efficient single side variety. Tying up the Boat Those two middle piles and the finger piers, with their piles, form a rectangle. This is the space where your boat should remain under all conditions. To assure it stays in position, it needs to be tied properly. There will be a few different places to tie the four standard dock lines, plus some tying fixtures for extra lines needed in windy or stormy conditions. A boat is very secure when all eight lines are properly rigged and tied. The names of the lines describe their position and function. The port and starboard bowlines connect to large loose rings at the front corners of the rectangle. The port and starboard stern lines connect to the outer pile and the pile at the end of the finger pier. This is secure, but the boat will still twist side to side and could strike the stern against the pier of pile in strong winds. To eliminate the twist, spring lines are attached to the stern cleats and either run forward and tied to the cleat in the middle of the finger pier, or all the way forward to the rings where the bowlines are tied. This process can be repeated with spring lines from the bow in the most extreme weather. Bumpers and other padding can customize a dock to protect a specific boat. Sometimes large rollers are added to guide boats into slips where space is tight. The classic mariners book The Ashley Book of Knots is still in print and makes a great addition to any bookshelf for the history lessons alone, and you will learn many knots and splices as well. Away From Home Port If you are traveling and visit a marina, you can rent a transient slip. A transient slip is one that is rented regularly or it may be a slip which is vacant for a week because the regular tenant is also out traveling. Most marinas have a provision which allows them to rent any slip which is going to be vacant for more than a couple of days. If you find yourself putting another boater in someone’s regular slip be sure and leave it as it was found. Once a boater requests a slip to fit the length and beam of the boat, as well as the amount of time needed, you should record the information. Then let the boater know the number and location of the slip and whether it is a port or starboard side tie up. This means that the finger pier will either be located on the port or starboard side. This is where someone can secure the boat while setting up other temporary lines. The finger pier will have cleats which are shaped like a short and wide capital letter T. There are usually three or four with one on each end of the pier and at least one in the middle. On fixed construction docks it’s okay to just tie up to the finger pier unless the weather is very bad. If bad weather strikes you will need to move the boat away from the pier to avoid damage from rubbing. Temporary dock lines are just like your permanent lines on a sailors home dock but the lengths will be different so four lines half the length of your boat, and four lines the length of your boat should be in every boat inventory. Having a few extras around is a good idea in case one is lost, damaged, or left behind by the visitor. Shore Power Ratings Shore power comes in two sizes, one for regular boats and one for very large boats with lots of power requirements. A twenty-amp connection is equivalent to one standard 120-volt household outlet.  For boats with full-size galleys or combination heating and air conditioning units, you will need a 240 volt, fifty amp connection, and appropriate power cord. Not all slips have both options so be sure to find out what power option is needed. Its also a good idea to know how someone might describe the plug configuration if they dont know the rating. Source Ashley, Clifford W. The Ashley Book of Knots. 1st edition, Doubleday Company, 1993.

How to Use the Spanish Pronoun Se

How to Use the Spanish Pronoun 'Se' Se is undoubtedly the most versatile of the Spanish pronouns. As you learn Spanish, you will come across se used in a variety of ways, usually meaning one of the -self words of English such as herself or yourself.   Using Se as a Reflexive Pronoun The most common use of se is a reflexive pronoun. Such pronouns indicate that the subject of a verb is also its object. In English, this is usually accomplished by using verbs such as himself or themselves. ​Se is used as the reflexive pronoun for third-person uses (including when usted or ustedes is the subject). Some verbs (as in the final two examples below) can be used reflexively in Spanish even though they arent translated that way in English. Pablo se ve por el espejo. (Pablo sees himself using the mirror.)Los padres no pueden oà ­rse. (The parents cant hear themselves.)Rebecca se perjudica por fumar. (Rebecca is hurting herself by smoking.)Benjamà ­n Franklin se levantaba temprano. (Benjamin Franklin got up early.)Se comià ³ los tacos. (He ate up the tacos.) Using Se as the Equivalent of the Passive Voice Although this use of se isnt technically the passive voice, it fulfills the same function. By using se, particularly when discussing inanimate objects, it is possible to indicate an action without indicating who performed the action. Grammatically, such sentences are structured in the same way that sentences using reflexive verbs are. Thus in a literal sense, a sentence such as se venden coches means cars sell themselves. In actuality, however, such a sentence would be the English equivalent of cars are sold or, more loosely translated, cars for sale. Se abren las puertas. (The doors are opened.)Se vendià ³ la computadora. (The computer was sold.)Se perdieron los llaves. (The keys were lost.)Se prohibe fumar. (Smoking is prohibited.) Using Se as a Substitute for Le or Les When the indirect-object pronoun le or les is immediately followed by another pronoun that begins with an l, the le or les is changed to se. This prevents having two pronouns in a row beginning with the l sound. Dà ©selo a ella. (Give it to her.)Se lo dijo a à ©l. (He told it to him.)No se lo voy a dar a ellos. (Im not going to give it to them.) Using the Impersonal Se Se is sometimes used in an impersonal sense with singular verbs to indicate that people in general, or no person in particular, perform  the action. When se is used in this way, the sentence follows the same pattern as those in which the main verb is used reflexively, except that there is no subject to the sentence that is explicitly stated. As the examples below show, there are a variety of ways such sentences can be translated to English. Se maneja rpidamente en Lima. (People drive fast in Lima.)Se puede encontrar cocos en el mercado. (You can find coconuts in the market.)Muchas veces se tiene que estudiar para aprender. (Often you have to study to learn.)No se debe comer con prisa. (One ought not to eat quickly.) A Caution About a Homonym Se shouldnt be confused with sà © (note the accent mark), which is usually the singular first-person present indicative form of saber (to know). Thus sà © usually means I know. Sà © can also be the singular familiar imperative form of ser; in that case it means you be as a command.

Social Policy With Reference to Social Security Essay

Social Policy With Reference to Social Security - Essay Example It had been an intense and traumatic time for the entire nation but also a realization that misfortune and tragedy were not restricted to the disadvantage alone. The task f re-building the state needed to take place at every level, as well as the re-building f lives: This led to a great expansion in the role f Government in society. Historically British social policy had been dominated by the Poor Laws. But now there was widespread support for reform and expansion f the welfare system. Development f such reforms would owe much to Fabianist beliefs and the Beveridge Report 1942. William Beveridge was appointed by the wartime Government to review Social Security Policy. His report concluded that the state should meet collective welfare needs and provide positive freedom to individuals by removing the Five Giant Evils. In 1945 Labour began addressing Beveridge's evil through state action introduced reforms: Claiming: 'Our policy was not f reformed capitalism, but progress towards a demo cratic socialism...the war had shown how much could be accomplished when public advantage was put before private vested interest. If that was right in wartime, it was right in peacetime' (Jones, 1991 p.117). To describe the social policy reforms, press at the time coined the phrase 'from the cradle to the grave'. Alcock describes the social policy proposals as: 'The social policy response to the depravation f depression' (Alcock, 2003 p.220). Prior to the NHS, health care was not a luxury everybody could afford. Access to a doctor was free to workers but this did not cover their families. Poor people often went without medical treatment, relying on home remedies or on the charity f a doctor. For the Government to fund the NHS and other evils economic growth and full employment were essential. Maynard Keynes advised the government to spend its way out f a recession by lowering taxes and investing more in projects and programmes. The government began to use Keynes theory f demand mana gement and in 1946 Minister Aneurin Bevan navigated proposals for the NHS passed two years earlier through parliament.  Ã‚  

Globalization and Indian Industries Essay Example | Topics and Well Written Essays - 1500 words

Globalization and Indian Industries - Essay Example Closeness to the technological frontier to fight the entry of the external competitors is considered to be very significant in this connection. The industries that have capability to improve their technological strength for investing in the updation of the production systems would be able to withstand the competition (Mishra, 2006). Thus the industries in this group tend to flourish and perform well under liberalized regime. While the companies that were very weak didn't have the enough strength to enhance their capacity and elevate them in towards the technological frontier. Thus most of these units have shorter business life span and ultimately get eliminated from the race. Thus the industries having very low technological frontiers would be losers under the globalised business environment (Mishra, 2006). Indian experiment on globalization started in the year 1991 with the major sectors involved being steel, pharmaceutical, petroleum, chemical, textile, cement, retail and BPO (Business maps of India.com, n.d.). The government had expected that high rate of growth could be achieved by inviting large volumes of foreign direct investments. A comparison on the number of companies that operated in India across pre and post-liberalized era clearly show the impact of the policy change. Earlier to 1991, the number of factories in India stood at 1,10,179 while their number reported in the year 2004 was 1,29,074. The first observable signs in this direction after the implementation of the polices were setting up of different companies with foreign investments for enhancing its operation in the above-mentioned sectors. This is said to have helped to address the local unemployment problems to a significant level and thus reducing the poverty levels in a few of the locations (Mishra, 2006). Also indirect benefits were obtained as a result of considerable improvements in the technology and management that the domestic companies had to attain to face the competition from their foreign counterparts having highly efficient production systems. On the other hand, the consumer preferences in buying also had a sporadic shift. The Indian consumer who were mostly dependent on the domestic products had the opportunity to purchase quality products at affordable prices. This had resulted in the lowering of business volumes of the pharmaceutical, chemical, manufacturing, and cement manufacturing industries (Business maps of India.com, n.d.). Also, the companies resorted to various structural adjustments like lowering of profits, which threatened the viability of long-term operations. Another striking feature was the reduction in the labour strength across the sectors. The labour statistics available for the year 1990 was 81,62,504 and those for the year 2004 was lowered to 78,70,081. Thu s the influence of globalization policies on the poverty reduction in India as a whole is very ambiguous (Mishra, 2006). Hence a The sector specific assessment on the impact of the globalization is as given below (i) Petroleum Industry: Globalization of the petroleum Industry had begun much before the

Night :: essays research papers

Night Paper Night is told by Eliezer, a Jewish teenager who lives in the town of Sighet, in Hungarian Transylvania. Eliezer studies the Torah. His study is stopped, when his teacher, Moshe the Beadle, gets deported. Few months later, Moshe returns to Siget telling a horrifying story that the Gestapo took control of his train and led everyone into the woods, where they killed everyone. Nobody believes Moshe and he is taken for a crazy lunatic. In the spring of 1944, the Nazis occupied Hungary. The Jews of Eliezer’s town are forced into small houses within their town. Soon they are put into cattle cars, and after days and nights crammed into the car, they are all exhausted and near starvation, they arrive at Birkenau, the gateway to Auschwitz. Upon their arrival, Eliezer and his father are separated from his mother and sisters, which they never see again. Eliezer and his father seem to pass the evaluation whether they should be killed or put to work, but before they are brought to the priso ners’ barracks, they stumble upon the a pit where the Nazis are burning babies. The Jewish arrivals are stripped, shaved and treated with cruelty. Later the Nazis took them from Birkenau to the main concentration camp, Auschwitz. They got to Buna, a work camp, where Eliezer is put to work in an -electrical-fittings factory. The guard forces Eliezer to give him his gold tooth, which they take out with a gold spoon. Eliezer begins to lose his faith in God. A couple moths later, Eliezer has an operation on his foot. While he is in the camp, the Nazis evacuated the camp because the Russians are charging and are close freeing Buna. In a blizzard, the prisoners are forced to run for fifty miles to the Gleiwitz concentration camp. Many died because of the horrible weather and exhaustion. The prisoners are put into cattle cars again and lead on another deadly journey, but only few lived after they reached the concentration camp, Buchenwald. Eliezer and his father survived by staying together but in Buchenwald, Eliezer’s father dies of physical abuse. Eliezer survives until the day that the American army liberates the camp. Eliezer struggles with his faith in Night. At the beginning of the book, his faith in God is very strong and when he was asked why he prays, he relpies, â€Å"Why did I live?

Sammy Quits A&P on a Whim

Sammy, an immature and impulsive 19-year old in Updike’s short story, â€Å"A&P,† allows infatuation with a scantily clad girl to override his common sense and good judgment.His juvenile thoughts spur a chivalrous act that may have long-term consequences on his career and the relationship with his parents.   Sammy’s foolish decision to quit his job as a supermarket cashier is based merely on lust, and he almost instantly regrets his futile move to woo the fleeting girl.Sammy’s base impulse is to ogle and crudely assess three young girls who enter the Boston-area A&P where he runs the register.   These girls, in their summer bathing suits, captivate and stun the seemingly adolescent Sammy.   He assesses the first young girl as a â€Å"chunky kid, with a good tan and a sweet broad soft-looking can.†Ã‚   This crude reaction indicates that Sammy may have misogynistic tendencies.   Stunned by sexual thoughts, Sammy makes an eagle-eyed spendthrift ’s day when he double-charges her for an item.   Then, his misogyny is confirmed when he humorously surmises that if his perturbed customer had â€Å"been born at the right time they would have burned her over in (nearby) Salem.†Sammy then trains his probing eyes upon the majestic young girl, the â€Å"queen,† who will quickly become his undoing.   He is infatuated by the bare top of her chest that glistens, unshielded by her downed bathing suit straps.He is smitten with her looks and the way she carries herself, but he demeans and minimizes any thoughts and intelligence this girl may possess.   Sammy’s chauvinistic, superior attitude is glaringly exposed when he wonders â€Å"how girls’ minds work (do you really think it’s a mind in there or just a little buzz like a bee in a glassjar?)†Ã‚   Based on his upcoming actions, perhaps Sammy is the one with the tiny, insect-like brain.The lustful, arrogant Sammy is among his kind as he observes most of his male co-workers.   His married, slightly older cohort, Stokesie, and the older meat counter attendant, McMahon, seem just as prone to ogle and demean any cute young things who enter the store.Sammy holds other customers in contempt as he mocks them as dull compliant â€Å"sheep† that mindlessly follow their dreary, meaningless routines.     Only the store manager, Lengel, is mature and immune to instinctive male sexual impulses.   He bluntly confronts the bikini-clad girls and says â€Å"this isn’t the beach.†Sammy then stupidly succumbs to his juvenile mindset by defending the girls and challenging the judgment of his boss.   His primitive, simple-minded instincts overwhelm any reasonable thoughts that might suggest restraint and responsibility.When the â€Å"queen† pays the smitten Sammy with a folded dollar bill that has been sweetly lodged between her luscious breasts, his fate is sealed.   Sammy reflexively blurts, â€Å"I quit.†Ã‚   The prudish Lengel gives the impulsive Sammy a chance to reconsider his brash career decision, but Sammy is committed to his wrong-headed thrust.   Almost instantly, his queen flees out of his sight and out of his life forever.Sammy, recently unemployed, is stranded in the supermarket parking lot with the realization that an impulsive act of chivalry fueled by lust may have altered his life forever.   A likely bleak reality emerges as his â€Å"stomach kind of fell as I felt how hard the world was going to be to me hereafter.†