1.4 Network Security

A method of systematically trying all usernames and passwords to gain unauthorised .

Data being read by an user or program

Software that / damages data or allows unauthorised access. Can / spread.

Flooding a with so much traffic it is unable to requests.

Fake sent to a person. Person into giving away personal data.

The use of to trick individuals into giving away or personal information

A hacking technique used to view or data in a database by inserting code instead of data into a text box on a form

Malware as legitimate software. Once installed acts as a and may delete or damage data

Software that across a using up all the bandwidth

Locks to data. Owners have to a fee to regain access to it.

Any non-software threat to a computer and the on it such as a person physically or stealing a server.

Prevents data by identifying activity on a network

Prevents access to a network by scanning incoming and outgoing packets of data for suspicious content. Also helps prevent and force attacks.

Prevents malware such as and spyware by files on a computer or being downloaded and quarantining or deleting suspicious files.

Prevents unauthorised access to a network such as a brute force attack or injection by testing for vulnerabilities so they can be made

Prevents data by making the data . Only those with the decryption key can read the data.

Prevents access by physical methods such as , keycard entry, biometric entry to , alarms and security .

Prevents unauthorised access by making passwords difficult to or brute attack.

Prevents unauthorised access to on a network by setting strict read/write that limit what a user can access and prevents accidental changes.

Prevents unauthorised access by adding an layer of security to the procedure by sending a to a separate device. Makes a brute force attack impossible.

Prevents threats to a network by making users behave in an way when using a network. Examples such as identifying emails and not visiting suspicious websites.