Unit 5 - Network Security & Systems Software

Software that aims to harm computers and/or data

Emails that pretend to be from legitimate companies but actually try to gain personal information

Deception to gain personal information?

Trying all possible passwords until the correct one is found.

Flooding a server or network with pointless requests so that it fails or slows down.

-Stealing data or intercepting it -With a man-in-the-middle attack.

Using web forms to add SQL instructions to a query that cause data loss or the revealing of personal information.

CCTV Intruder alarms Locks on doors or cabinets Fences, walls, barbed wire Security guards ID cards and signs

-Prevents attackers from gaining access to computers on a network. -Can block certain malicious computers by filtering packets from a certain IP address. -Can prevent access to certain ports on the network. -Malicious or inappropriate websites can be blocked. -Dedicated hardware firewalls are expensive, -Software firewalls will slow down a computer,

A method of the user interacting with the computer – windows, icons, menus, pointers, drag/drop – can be GUI, menu interface or command line interface.

Manages programs and data stored in RAM, frees up memory when a program is closed.

Running two or more programs at once.

The management of devices such as mice and printers.

Management of usernames and passwords along with what they have permission to access.

The organisation of files on storage drives.

Encryption software Defragmentation software Data compression Disk management (clean-up, formatters) anti-virus software.