Cyber -Attacks on America Essay Example | Topics and Well Written Essays - 2500 words

Cyber -Attacks on America - Essay Example These include voice communication systems, financial institutions and federal agencies among others. Whereas physical attacks would be carried out by hostile foreign nations and terrorists, cyber-attacks could be executed by a wide array of enemies including organized protest groups, terrorists, foreign states and even teenagers. Additionally, Lee (2013) observes the incapacity to protect all computer networks or cell phones or pagers from attack, especially now that 95% of these gadgets are operated and owned by the private sector. Therefore, America is increasingly vulnerable to cyber-attacks which grow by breadth and complexity, indicating the need for the country to continuously adopt and re-engineer its protection approaches that would uphold its cybersecurity. Cyber-attack refers to an attack originated from a computer system against another computer system or a website, aimed at altering, stealing or erasing information or have the functionality of the targeted computer system impeded or destroyed (Lee, 2013). A report on cybercrime documented recently by Hewlett-Packard indicates that the number of cyber-attacks have risen by 42% as compared to the year 2012 (Lau & Xia, 2013). Organizations get successfully attacked 102 times weekly with the annualized cost as a result of these cyber-attacks rising to $8.9 million per organization. Furthermore, it was indicated that security breaches by an organization could cost it up to 1% of its market value. Citing the examples of recent attacks on HSBC, the New York Stock Exchange and major commercial banks such as Citi Bank and Bank of America, PricewaterhouseCoopers, PWC (2013) appreciates cyber-attacks as a serious problem in America that needs critical intervention. Types of Cyber Attacks Cyber-attacks could occur in different ways. First, it could occur in form of exploits. As explained by Vatis (2002), this form of attack involves a sequence of commands, chunk of data or piece of software which takes advantag e of software bug to cause unanticipated or unintended reaction by the computer hardware, software or any piece of electronic. It normally includes denial of service, allowing privilege escalation or gaining control of the system. Secondly, the attack could take the form of eavesdropping where the attacker surreptitiously listens to private conversation. This could be done through the monitoring of faint electronic magnetic transmissions which get generated by the hardware. Moreover, attackers have penetrated even the most secure computer systems leveraging on the carelessness of authorized individuals or through deliberate deceit of such individuals. Lee (2013) refers to this as social engineering. Denial of service attacks are a unique approach to cyber-attacks. They are not used to control a system or gain unauthorized access, but rather render the system unusable. This could include multiple deliberate entry of a wrong password to lock the user or overloading the capability of a system or network so as to block it. Finally, direct access to a computer system could lead to the installation of devices that could compromise security, including modification of operating systems. It could also include downloading crucial information from the system (Brenner, 2010). Using this knowledge, cyber attackers have adopted varied approaches to executing

Chooses an artist between 15th century till 19th century Term Paper

Chooses an artist between 15th century till 19th century - Term Paper Example Leonardo achieves a prominent influence because he integrated many concepts in his creations. Leonardo struck a vision of future inventions and the development of religion in his creations (Zollner 23). The most revered works of Leonardo’s efforts include Mona Lisa and the Vitruvian man. It is essential to examine Leonardo’s background to realize the elements that shaped his works and intellectual direction. Leonardo da Vinci was born in 1452 in, Tuscan hill, Italy. He was born in an illegitimate relationship and, therefore, he spent most of his childhood while living among relatives. In his early life, he received elementary education in Latin, mathematics and geometry. There are meager records as to what pertains to Leonardo’s childhood. However, there are records that show that he had made earlier paintings way before he attended an art school. Leonardo expressed a strong quest for artistic ventures that his father collected his paintings and took them to his friend. The friend, Verrocchio, later admitted Leonardo into his workshop. The mainly revealed part of his childhood concerns a scary cave that he witnessed during his early adventures. This scene seems to be a basic part to the abstract painting that Leonardo obsessed. At fourteen years of age, Leonardo began attending workshop of a local painter (Kemp, 238). The local painter was known as Verrocchio and was deemed as the most successful in a state known as the republic of Florence. Apart from painting, Leonardo might have learnt about other skills such as carpentry. In addition, Leonardo explored other forms of art such as sculpting and drawing. Verrocchio was a vital influence on Leonardo since he collaborated with Leonardo in several works. Leonardo continued to work jointly with Verrocchio on notable works. At the workshop, Leonardo had refined and critical drawings that drew his contemporaries’ attention. However, he showed an early inclination towards painting. Leonardo