Computer Security Computer security is an important issue and threats to the computer must be countered through various access controls and safety measures. Authorized accesses, avoidance of malicious software, prevention of applications from hackers are the steps that make a system secure. The fundamentals of computer security include an understanding of security policy stating laws, practices and regulations to manage and protect sensitive information. Enforcing a devised security policy and assurance of policy implementation are other important aspects of computer security. Computer security has various characterizations. First comes the information technology (IT) security based on three key points: Confidentiality, Integrity, and Availability. …show more content…
The security threats, policies, and appropriate security mechanisms are discussed to understand the threat. The paper discusses the background of security threats and then details some of the procedures and security mechanisms for personal computers. Security Threats There are four kinds of security threats, Interception, Interruption, Modification, and Fabrication. Interception Interception is an unauthorized access to data. Interception occurs when someone else who is not supposed to listen to that conversation intercepts communication between two entities. The interception in case of computer systems is the illegal access to data communication or breaking into the private directory of the personal computer’s file system (Paulauskas and Garsva, 85). Interruption Interruption is the situation when a computer or a system’s data or services become unavailable, destroyed or corrupted and unusable. An example of interruption is the DoS (Denial of Service) attacks by malicious software that make a service or a system unavailable (Paulauskas and Garsva, 85). …show more content…
(usa.kaspersky.com) Security Policy All the four classifications of security threats are data falsification techniques that can be protected by building a secure system. In order to protect the system completely, a robust security policy must be in place. The security policy describes that which all entities are accessible and those that are prohibited. The defined entities in a security policy include users, data, file paths, services, and if on a network then machines. After constituting a policy, it becomes easy to focus on the security mechanism for enforcing the policy (Yost, 7). Security Mechanism Encryption Encryption is the basic element of computer security. Encryption process transforms data into a form that becomes unreadable for an unauthorized person or program. Encryption ensures confidentiality and integrity. Encryption is also secured against data modification. Cryptography is an encryption technique for securing data and systems so that only authorized persons can access those. An example of encryption technique includes Symmetric key-based Advanced Encryption Standard (AES) algorithm (Bishop).
Encryption is a strategy for changing data on a computer in a manner that it gets to be distinctly incomprehensible regardless of the possibility that somebody can access a PC with individual information on it.
Encryption is the most powerful way to secure information by protecting it in the occurrence of theft, loss, or unauthorized access. It scrambles your data by requiring the receiver to have a secret key or password which would allow them to decrypt it. Web browsers indicate encrypted security techniques by showing a “lock” icon in the status bar. Webpages for online shopping will have either “http” at their beginning of the web address or a “lock” icon on the page. Email services should be protected by antivirus software. These
What is encryption? Encryption is a technological technique that protects and secures the transfer of plain text information between two sources through the use of the internet. This is done by rearranging the text using a mathematical algorithm that renovates the message into an indecipherable form, which can only be unlocked and translated with a use of a key. The strength of the encryption key is measured by its length, which is determined by the number of bits and by the type of encryption program.
What concerns the government of the United States most is the security of the critical infrastructure from the cyber threats. The nation is depending heavily on the technology in most of its critical sectors to keep it up and running. Thus, this makes its more vulnerable to cyber-attacks from outsiders and insiders. Therefore, its protection must be a priority.
Whitman, M. E., & Mattord, H. J. (2011). Principles of information security. Boston, Mass: Thomson Course Technology.
What is interception? The interception of communications includes listening to the calls made on a telephone or opening and reading the contents of a target's letters or e-mails. Interception between the US and the EU very common because of lack of communication and agreement on the laws. The FBI used to use a program called Carnivore (or DCS1000) that would allow them to track a targets digital tracks. It would help monitor emails and other forms of electronic communications.
There are many terms which have been introduced by the field of encryption. Each of these terms are need to understand this discussion. Plaintext is the original document to be transmitted or stored on a computer system. Ciphertext is the encrypted document. ...
Security helps the organization meet its business objectives or mission by protecting its physical and financial resources, reputation, legal position, employees, and other tangible and intangible assets through the selection and application of appropriate safeguards. Businesses should establish roles and responsibilities of all personnel and staff members. However, a Chief Information Officer should be appointed to direct an organization’s day to day management of information assets. Supporting roles are performed by the service providers and include systems operations, whose personnel design and operate the computer systems. Each team member must be held accountable in ensuring all of the rules and policies are being followed, as well as, understanding their roles, responsibilities and functions. Organizations information processing systems are vulnerable to many threats that can inflict various types of damage that can result in significant losses (Harris, 2014). Losses can come from actions from trusted employees that defraud the system, outside hackers, or from careless data entry. The major threat to information protection is error and omissions that data entry personnel, users, system operators and programmers make. To better protect business information resources, organizations should conduct a risk analysis to see what
Whitman, M. E., & Mattord, H. J. (2009). Principles of Information Security 3rd Ed. Boston: Course Technology.
Computer science is a vast field that includes nearly everything relating to computers. Everyday there is information transmitted all over the Internet. Pictures are uploaded, transactions are made on thousands of online retail websites, and banking transactions take place everyday on the Internet. All of these transactions have created a need for secure communications. People wish to keep things like banking, medical, and political information from the eyes of unwelcome parties. This has created a need for cryptography. Cryptography is the science or study of the techniques of secret writing, especially code and cipher systems, and is used by everyone from the average citizen to the government and military.
Data encryption refers to the transformation of data into a structure that makes it unreadable by anyone without a secret decryption key. It ensures that messages can be read only by the planned recipient. Encryption is the procedure of obscuring information to create it unreadable without special information. Only organizations and individuals with an abnormal need for secrecy have actually made good use of it. Nowadays, encryption is one of the most important technologies for maintaining your privacy and the security of important information. This helps out greatly especially when E-Commerce is being used.
The internet allows people to communicate sensitive information, and if received in the wrong hands can cause many problems for that person. Cryptography is the study or science of techniques of secret writing and message hiding. Cryptography constitutes any method in which someone attempts to hide a message, or the meaning, in some medium. One specific element of cryptography is encryption, which hides the data or information by transforming it into undecipherable code. Encryption uses a specified key to perform the data transformation.
ABSTRACT : This paper describes the basic threats to the network security and the basic issues of interest in designing a secure network. it describes the important aspects of network security. A secure network is one which is free of unauthorized entries and hackers. INTRODUCTION
Privacy exist wherever personal information or other sensitive information is collected, stored, used, and finally destroyed or deleted – in digital form or otherwise. The challenge of data privacy is to use data while safe-guarding individual's privacy preferences and their personally identifiable information. The fields of computer security, data security, and information security design and utilize software, hardware, and human resources to address this issue.
The first thing that we must consider about Information Security is that there is not a final destination at which we can arrive. IT Security is an ongoing set of processes and activities that requires attention and expertise on a daily basis. It is important to understand that systems are not secured by themselves and it is our responsibility to maintain and improve them periodically as required. It is of vital importance to establish the appropriate mechanisms and requirements in order to support the company’s CIA triad. The following report will provide you guidance about auditing and hardening techniques applied though the 7 Domains by utilizing IT Security Best Practices.