P3 updated

Data Protection Act;
The data protection act is an act that protects your personal data against threats when you give your details to a service or a company. This act stops people trying to steal off the internet and using it for themselves. If you try and go against the act then you will be prosecuted. The main intent is to protect individuals against misuse or abuse of information about them. The DPA was first composed in 1984 and was updated in 1998.

Security Risks:
Hacking;
The most common way of hacking is gaining access into a server, taking a copy of a credit card database or some other attack.Hacking is the act of breaking in to a computer system and is a criminal offence under the computer misuse. Computer hacking is the most popular form of hacking nowadays, especially in the field of computer security, but hacking exists in many other forms, such as phone hacking, brain hacking, etc. and it's not limited to either of them.

Viruses;
A computer virus is a program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes. Viruses can also replicate themselves. All computer viruses are man-made. A simple virus that can make a copy of itself over and over again is relatively easy to produce. Even such a simple virus is dangerous because it will quickly use all available memory and bring the system to a halt. An even more dangerous type of virus is one capable of transmitting itself across networks and bypassing security systems.

Identity theft;
Identity theft is a crime in which an imposter obtains key pieces of personal information, such as Social Security or driver's license numbers, in order to impersonate someone else. The information can be used to obtain credit, merchandise, and services in the name of the victim, or to provide the thief with false credentials. In addition to running up debt, an imposter might provide false identification to police, creating a criminal record or leaving outstanding arrest warrants for the person whose identity has been stolen.


Security protection mechanisms:
firewalls;
A system designed to prevent unauthorized access to or from a private network. Firewalls can be implemented in both hardware and software, or a combination of both. Firewalls are frequently used to prevent unauthorized Internet users from accessing private networks connected to the Internet, especially intranets. All messages entering or leaving the intranet pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria.

Secure Socket Layers (SSL);
A Secured Socket Layer, or SSL, is the usual way that a website creates a secure connection with a web browser. Whenever a web surfer visits a secure site that uses SSL technology, it creates an encrypted link between their browser session and the web server. SSL is the industry standard for secure web communication and is used to protect millions of online transactions each day.

M1

Web 2.0; Web 2.0 is term that was introduced in 2004 and refers to the second generation of the Web. The term "2.0" comes from the software industry but the new generation of the Web includes new features and abilities that were not available in the past. Web 2.0 is mainly to do with technology improvements and changes. Web 2.0 has become a lot more social as it a lot easier to share information on social networking sites such as Facebook. As the sites continue to grow, more features are added, building off the technologies in place.  Blogs also known as Web logs, these allow users to post thoughts and updates about their life on the Web. Sites like Wikipedia and others enable users from around the world to add and update online content.

Blogs; It is a short term for "Web Log," this term refers to a list of personal information posted on a Web page. Anybody who knows how to create and publish a Web page can publish their own blog. Some Web hosts have made it even easier by creating an interface where users can simply type a text entry and hit "publish" to publish their blog.

Because of how simple it is to create a blog, many people often young kids and adults have found a new lifestyle on the Web. Now days it is a lot more common than people share their personal feelings and experiences with thousands of people around the world than keeping them to their selves. This creates a lot friendly and commutative world where people can talk and share anything they want with anyone. Blogs are typically updated daily, monthly, or anywhere in between.

Online applications; These are used by people who are on the internet. These applications can mainly only be used by people who are connected to the internet. A good example would be ‘YouTube’ as you can only watch there videos if you are connected to the internet.

Cloud computing; Cloud computing refers to applications and services offered over the Internet. These services are offered from data centers all over the world, which collectively are referred to as the "cloud." The idea of the cloud simplifies the many network connections and computer systems in the world. Many network diagrams use the image of a cloud to represent the Internet. This symbolizes the Internet's broad reach, while simplifying its complexity. Any user with an Internet connection can access the cloud and the services it provides. Examples of cloud computing include online backup services, social networking services such as Twitter. Cloud computing also includes online applications, such as those offered through Microsoft Online Services. 

P2

User side factors: 

download speed; Obviously you don't want to sit around and wait for things to download so this could be affected by the speed of your computer as it can only load certain things at a time. Another reason how your download speed could be affected is if you have loads of programs open such as Facebook, Msn, Youtube etc.. which take up alot of memory and take much longer to load so this will slow your computer down considerably. Also it could be to do with the stability of your computer at that time. 

PC performance; There are many things that will affect the performance of your computer such as how much memory is used up, processor speed and the browsers cache. Browsers cache is where if you have already visited a page then you go on it again then it will load quicker as it will be stored in the browsers cache.

browser; There are many different browsers such as Firefox, Safari, Google chrome etc.. but they work very differently as google chrome is the fast browser. When it was tested it came out better in Javascript speed, CPU usage for example. This is important because then the browser will load quicker and be able to download your items in a much faster time. Browser performance is how long it takes to load a page and how it appears to the user.

processor speed; The processor's job is to manage all of the computers operations and how well it runs. This includes memory, download speed, internet history, RAM and all the other main operations your computer needs to run. All data used by a computer is going through the CPU. The larger the cache size and the higher the clock speed, the faster your PC will operate.

Server side factors: 

web server capacity; Website are only made to have some many different users on at the same time. Each website is made with a different capacity because of the popularity of the website, for example Youtube will have a much bigger capacity than corby town football clubs website. If too many people try and access the same page at the same time then it will run alot slower and may even crash.

bandwidth; The bandwidth is the amount of times your website can be viewed. The lower the bandwidth the slower your website will run but the higher the bandwidth then the faster your website will run.

number of hits; If you have loads of people trying to access the same page or video then it will be become alot more slower and wont run as smoothly. For example if thousands of people want to watched the same video then it will buffer alot to keep up to speed with all the users watching it.

file types; The file type and file size is very important in relation to a website when referring to its performance. "Jpeg" files are alot more compressed and lower quality compared to a "wav file". This means that it would take less time to load, which will ideal to use for a website because it would load quicker and the user will be able to access what they would like in a shorter amount of time. Some files may download faster than others, so it is important that you choose the small file so it will download in a much quicker time. Audio files are alot more complex as the file extension can have a huge impact on the overall performance and a good example would be of a wav file could be an MP3.

P1