IGCSE Comp Sci - Security revision

Hacking is

• Malicious code installed to redirect users to a fake website

• A way of gaining illegal access to a computer system

• Sitting on a cool PC chair in black hoodie at night and staring at green digits on a monitor

• Malicious code installed to redirect users to a fake website

Virus in comp sci context is

• A form of encryption requiring both a public and a private key

• A thing that makes your computer cough

• Program code that can replicate/copy itself with the intention of

  deleting/corrupting data/files or causing the computer to malfunction

• Malicious code installed to redirect users to a fake website

Phishing is

• Sending legitimate-looking emails to encourage users to give out personal data

• The editing of program source code so that it can be exploited or changed for a specific purpose

• Playing fishing games on a PC professionally

• Used to verify that data comes from a trusted source

Pharming is

• Pieces of data which allow detection of web pages viewed by a user and store their preferences

• A way of gaining illegal access to a computer system

• Playing farming games on a PC semi-professionally

• Malicious code installed to redirect users to a fake website

Shareware is

• Software that a user can download free of charge and use for free forever, no caveats

• Software that user can try out for free for a trial period

• Used to verify that data comes from a trusted source

• Part of Ukrainian national dress (for real though, sounds very similar)

Symmetric encryption is

• A form of encryption requiring both a public and a private key

• A set of principles set out to regulate use of computers

• A way of gaining illegal access to a computer system

• A form of encryption using one private key for both sender and recipient

Spyware / key-logging software is

• Software that gathers data by monitoring key presses on user's keyboards

• A form of encryption requiring both a public and a private key

• Malicious code installed to redirect users to a fake website

• Secret type of software that only spies can use

Asymmetric encryption is

• Allows data to be sent and received securely across a network

• A secret key which makes a message unreadable unless the recipient also has the decryption key

• A form of encryption requiring both a public and a private key

• too much to comprehend

Authentication is

• Used to verify that data comes from a trusted source

• An attempt at preventing users from accessing part of a network, notably internet servers

• A way of gaining illegal access to a computer system

Denial of Service attack is

• an attempt at preventing users from accessing part of a network, notably internet servers

• A protocol that is designed to ensure that no third party may

  eavesdrop or tamper with any message

• Software that gathers data by monitoring key presses on user's keyboards

• When someone denies you service at restaurant and then attacks you