Defragmentation
Defragmentation is the process of putting blocks of data into order. This makes it easier (and quicker) for a magnetic…
Data compression
Data compression will reduce the size of a file so that it is smaller and more easily shared. Data compression…
Backup
Backup is where data is copied onto another medium such as USB, another disk, CD/DVD etc. If the original file…
Virus
Any computer program designed to replicate and damage other computer systems and software.
User access levels
These are the permissions given to a user to access facilities on a computer.
Trojan Horse attack
Programs which pretend to be legitimate but in reality are malware. They are often disguised as email attachments. Trojans cannot…
SQL injection
Uses SQL language to try and gain access to information from a database from a form that is connected to…
SQL
Stands for Structured query language. It is a programming language used to control databases.
Spyware
Programs that monitor user activities (such as websites visited, usernames and passwords used) and send the information back to a…
Social engineering
Social engineering refers to using people as the weak point to gain access to systems or gain passwords.