A hidden way to access a computer system or network that is not authorized by the system administrator.

A copy of data that is stored in a safe place in case the original data is lost or corrupted.

The amount of data that can be transferred over a network in a given amount of time.

refers to the practice of hacking, breaking into computer systems, networks, or applications with malicious intent and without authorization from the system owner.

refers to a website where you write about your personal experiences, opinions and interests.

is a way of communicating wirelessly over short distances between electronic devices (for example computer and mobile telephone)

is the process of starting a computer as initiated via hardware such as a button or by a software command. After it is switched on, a computer's central processing unit (CPU) has no software in its main memory, so some process must load software into memory before it can be executed. This may be done by hardware or firmware in the CPU, or by a separate processor in the computer system.

A software program that is controlled by a remote attacker.

A network of computers that have been infected with malware and are controlled by a remote attacker.

A software program that allows users to view web pages on the internet.

An error in a software program that causes it to malfunction.

A group of 8 bits is called byte. A byte is the smallest unit which can represent a data item or a character.