Network issues and communication

Security issues and regarding data transfer

Security issues with using a computer network:

["If your computer is connected to a network, other people can connect to your computer."]

There are several security issues that you computer might get to face when using or connecting with a computer network such as:

• Hacking....A person who gains unauthorized access to a computer system are called HACKER. They usually discovered and exploited computer system failure. 
• Viruses....Software that can 'infect' a computer (install itself) and copy itself to other computers, without the users knowledge or permission.
• Malware...is short for malicious software. Malware is the name given to any software that could harm a computer system, interfere with a user's data, or make the computer perform actions without the owner's knowledge or permission. 

Sometimes the internet is not policed; and you might existence to the unappropriated websites. 

Physical security:

• Don't let an unauthorized sit in front of your computer.
• Keep your office door lock.
• Use password

You can prevent these by: using anti-malware software; using firewall; secure your network, etc.

Avoiding password interception:

• Use anti-spyware
• Change the password regularly...[The password should be strong and hard to identify, with lowercase and uppercase alphabets and numbers (number should not be easy to guess e.g. date/month/year of birth or age etc). You also can use the symbols show on the keyboard if they allow].
• Preventing unauthorized access
• Securing your data...Encrypt
• Installed firewall

Authentication Techniques (security):

• Biometric methods: refers to metric related with human characteristics such as fingerprint recognition,  iris recognition, face recognition, voice authentication, retina scan etc.......
• Magnetic stripes: 
• Id cards: 
• Passports:   
• Physical tokens: e.g. security token, hardware token, authentication token, USB token, cryptography token, software token, virtual token, or key fob are used to prove one's identity electronically.

Antivirus software and avoiding viruses:

There are some simple ways to prevent your computer from getting viruses:

• Install antivirus software;-detect and prevent viruses from getting into your computer
• Download and install software from internet can infected your computer with viruses
• Don't open attachment from strangers in the email.
• Install firewall to protect your computer. 

Data Encryption:

Encryption is a process of converting information into a form that is meaningless to anyone except holders of a ‘key’. 

Uses; 

• Secure the important or personal data.
• Encrypt data.
• Prevent the data from the hacker.

Typical data protection act:

Many governments have realized the need to protect peoples' data from misuse, and have created Data Protection Acts. These are a legal rules that must be followed by any business of organisation that keeps a database containing peoples' personal data.

A typical Data Protection Act might include the following rules;

• Data must only be kept if it is necessary for the business / organisation (e.g. a store shouldn't keep details of your political or religious views - they don't need to know this!)
• Data must be accurate and kept up-to-date (it is the duty of the business / organisation to make sure the data has no errors)
• Data must not be kept longer than necessary (e.g. you can't keep a customer's details forever - only whilst they are still your customer)
• Data must be kept secure (e.g. databases should be encrypted, firewalls should be used for networks, etc.)
• Data must not be transferred to any country that does not have a similar data protection laws

KEEP YOUR NETWORK SAFE:)