Security risks in a network

Remote access  When you connect a computer to a network it is visible to all other computers on the network. When you connect to the internet your computer is visible to billions of computers around the world. To prevent remote access is to use firewall. Firewall  Is a software that permits or blocks connections between your computer and other computers on the network according to the rules you have set. A firewall is not enough on its own because some malware such as virus works by shutting down firewall.

Intercepting data: using sensitive data across the internet  Credit card information  Personal details  Sensitive company information  Bank account information Thus information can be intercepted and read by other networks users who may use it to commit fraud. Encryption is one way to keep data safe.

Illegal access  Data can be stolen or corrupted by unauthorised users on a network Authentication  The process of identifying an individual to prevent illegal access

Captcha test: to ensure the user is a human and not a computer program

Q1- why firewalls are used by people when accessing the Internet Q2- Data can be encrypted when it is sent to other people over the internet. Explain how encryption helps keep data secure.