Ethics..

Encryption


Encryption is the conversion of data into a form, called a ciphertext, that cannot be easily understood by unauthorized people. Decryption is the process of converting encrypted data back into its original form, so it can be understood.

The use of encryption/decryption is as old as the art of communication. In wartime, a cipher, often incorrectly called a code, can be employed to keep the enemy from obtaining the contents of transmissions. (Technically, a code is a means of representing a signal without the intent of keeping it secret; examples are Morse code and ASCII.) Simple ciphers include the substitution of letters for numbers, the rotation of letters in the alphabet, and the "scrambling" of voice signals by inverting the sideband frequencies. 

More complex ciphers work according to sophisticated computeralgorithms that rearrange the data bits in digital signals.

In order to easily recover the contents of an encrypted signal, the correct decryption key is required. The key is an algorithm that undoes the work of the encryption algorithm. Alternatively, a computer can be used in an attempt to break the cipher. The more complex the encryption algorithm, the more difficult it becomes to eavesdrop on the communications without access to the key.

//http://searchsecurity.techtarget.com/definition/encryption

Ethics..

FIREWALL


A firewall is a set of related programs, located at a network gateway server, that protects the resources of a private network from users from other networks. (The term also implies the security policy that is used with the programs.) An enterprise with an intranet that allows its workers access to the wider Internet installs a firewall to prevent outsiders from accessing its own private data resources and for controlling what outside resources its own users have access to.


Basically, a firewall, working closely with a router program, examines each network packet to determine whether to forward it toward its destination. A firewall also includes or works with a proxy server that makes network requests on behalf of workstation users. A firewall is often installed in a specially designated computer separate from the rest of the network so that no incoming request can get directly at private network resources.

There are a number of firewall screening methods. A simple one is to screen requests to make sure they come from acceptable (previously identified) domain name and Internet Protocol addresses. For mobile users, firewalls allow remote access in to the private network by the use of secure logon procedures and authentication certificates.

A number of companies make firewall products. Features include logging and reporting, automatic alarms at given thresholds of attack, and a graphical user interface for controlling the firewall.

Computer security borrows this term from firefighting, where it originated. In firefighting, a firewall is a barrier established to prevent the spread of fire.


//http://searchsecurity.techtarget.com/definition/firewall

Ethics Lessons

Video Credit : Youtube

Law..Ethics..Technology

        Law is a system of rules a society sets to maintain order and protect harm to persons and property. They are made by governments in order to protect its citizens.The judiciary, legislature, and public officials are the three main bodies in a government that are assigned to the task of the creation of laws.

Laws have to be approved and written by these three branches of government before they are implemented and enforced by the police and the military, with the help of the legal system consisting of lawyers and other government servants.

 

        Ethics is the study of ideal human character, action and ends. It can also be defined as a set of rules formulated by a country or a company or some institutions. It is mainly based on moral values. Ethics is not that it is set for any particular society, but it is mainly based on virtues, rights, and obligations.