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Cloud Computing is the combination of Distributed Computing, Parallel Processing and Grid Computing, or also know as the computer science concept of business.

Many multinational company such as the information technology industry, Yahoo and Google IBM’s use of the concept of cloud calculative selling their products and services. Cloud calculative this term may be borrowed from the quantum physics of Electron Cloud “(” Cloud), emphasize that the calculation of diffuse and omnipresent distribution and social characteristics. In quantum physics “probability cloud)”, electron (around the nucleus in electronic is not a sport such as the rail track objects, but as the space, cloud filled the existence of the movement is described, electronic Newton classical mechanics but a probability distribution density function, use the schrodinger equation to describe fluctuations within the time specified, the probability of a particle size, with the formulation of the classical mechanics is totally different. Has the following characteristics of cloud, however, diffuse, simultaneously, etc., may indeed is calculated from the clouds cloud concept, this is the so-called “before the Ubiquitous computing”, IBM has a Ubiquitous computing is Ubiquitous “, “MS (Bill) soon followed a Ubiquitous computing” Pervade “, people is right now Ubiquitous computing is a new understanding, now say “Omnipresent”. However, the cloud calculative is purely commercial hype, it will change the pattern of information industry, now many people already use Google Apps and Google Doc, USES the many remote software applications such as word processors Office rather than with your local machine install these applications, who will buy Office software? There are many enterprise applications such as e-commerce applications, such as to write a transaction procedures, Google’s enterprise scheme and contains the templates, a salesperson didn’t study Netbeanr also can make. This calculation and industry trends is the source of the spirit, with a Service SaaS (on) the trend. Now, there’s only five computers in the world today, is a Google, one is the IBM, is a Yahoo, one is amazon.com, is a Microsoft, because these five company takes the lead in the distributed processing business applications on the leading the trend. From very early computer network is proposed that “is prescient.

According to vnunet.com website reported in San Francisco, the columnist Iain Thomson and Shaun Nichols announced the most vicious 10 computer viruses that they think so far.

1. Creeper Virus
   Creeper is probably the first computer virus, although this is controversial. The virus is in 1971, written by Bob Thomas using Tenex operating system.
2. Brain Virus
   Brain 1st found in 1986 in first use Microsoft DOS production of the virus. The virus is written by Pakistan’s two brothers Basit and Amjad Farooq Alvi, it is used to prevent copying a medical software.
3. MyDoom
   MyDoom is 1st infected host, then the address book to mass attack mode. The virus through inspection and use reliable method via E-mail and address book.
4. Nimda Virus
   Nimda is one of the fastest spreading virus in the history, after 22 minutes in online after became the most widespread of the virus.
5. Melissa Virus
   This is a romantic love story. A boy met a woman. The girl, boy home by dancing money for the girl to write computer viruses. This computer virus spread out later, caused millions of dollars worth of damage. This is our age of romeo and Juliet.
6. Storm Virus
   The Storm is a large malicious botnet virus, is early in 2007 to European flood of fake news form first appeared. This virus have threaten users for more than a year’s time.
7. ExploreZip Virus
   ExploreZip virus is written in 10 years ago, but the virus remains in communication. This is a virus so stubborn a good example.
8. Conficker Virus
   J C virus Conficker originally started in March 2009, then spread a lot on April 1, cause global disaster global attack. However, the virus does not caused much damage.
9. Klez Virus
   Klez also is a kind of very stubborn virus. In the first seven years later, the virus is still spreading.
10. Cloner Elk Virus
    Elk Cloner virus is a 15-year-old high school students to write a joke Skrenta sorrow. Unfortunately he soon became bad jokes. Elk Cloner virus spread, through the initial sector has become a standard way of later the spread of the virus.

Vista password retrieve / crack method

Windows Vista system administrator if you forget your password, you reinstall your operating system? Of course not, today we introduce you the method to retrieve your forgotten password.

First put in your Vista installation disk into drive, restart your computer, configure in the CMOS setup to start on cd-rom.

1. During installation interface, please click “Repair your computer” (restoration), and the verification dialog, select the “Command Prompt” (the Command Prompt order).

2. Then in system command prompt window, please input “mmc.exe” command. Press, the system will call a console.

3 then select file “-” add/remove management unit “, the system will pop-up a dialog box. In this dialog window choose “local users and groups”, and then click “add” button. At this time, the system will be “local users and groups” add “, click “ok” button console determine to add process completed.

4. After adding system, return to console interface, click on the “window of local users and groups”, and then click “user”, the system will be on the right window: lists the current all users. Right-click the login user to crack/reset your password “, click “setup” in the pop-up for account password “dialog box, click the” continue “button.

System of the new password window popup Settings. While Vista system does not require the user input password before, but can set a new password. In the new password, click on the input, the system will determine the button dialog, a pop-up set success.

This method is only for personal use in case you forget the Vista password, don’t forget the password again.

Safety and protection analytical measures for wireless router
The wireless network security, in the developed society has become more and more important, whether in the family or business users, the network information safety is always first solve the problem.
The wireless network security, in the developed society has become more and more important, whether in the family or business users, the network information safety is always first solve the problem. Due to a wireless network in relative to the wired network security has inherent disadvantages, so we should learn how to protect their information security.

Wireless router has gradually become the preferred user, many families formed an important equipment, wireless network cable and its randomness, compared with flexibility is the main advantage, ordinary users at home and family by wireless router anytime, access to the Internet. But because wireless network itself is open, so it is difficult to ensure safety.
Now each big brands in wireless router configuration design increases the keys, prohibit SSID broadcasting, to protect individual users of wireless network security. But these protection means what effect it with or its? Today, the author simply talk this aspect.

1. The Wireless Encryption
First, the said wireless encryption is currently the most common way to protect a means, the user can through wireless router WEB interface to encrypt a wireless network Settings. At present, the wireless router or AP encryption type usually have two kinds, namely 64-bit and secure 128-bit encryption type, as long as the input of 10 or respectively 26 string as encrypted password can protect the wireless network. Here to remind, general wireless router in the factory is closed wireless encryption functionality, if you bring direct use of words, so your network is an extremely unsafe network, therefore suggest or Settings again after use.
The author then use a 64-bit mode, use the encryption software that can bring notebook, but due to signal no password, so not connected network. In addition, suggest users password best high safety coefficient contains some, such as digital, characters, characters and formula, etc.

2. Close a DHCP Server
DHCP function is for the computer automatically assigned LAN IP address, so the user manual Settings from IP address, subnet mask and other needed TCP/IP parameters. But because the DHCP, function is to open in signal coverage is any computer can get IP address, illegal users of the wireless network connected to a wireless network, which brings safety hazard. Therefore, disable DHCP function also is a kind of relatively effective safety protective measures.

Disable SSID broadcasting
SSID simple, is you for your wireless network by name, but because of the same products factory of SSID is same, this will give some illegal personal opportunities, through the initial string to connect to wireless networks, so you will receive a wireless network intrusion, safety coefficient of illegal reduced greatly. So close SSID broadcasting function, is necessary.
In addition, closed SSID broadcasting will not affect the use, but in others’ search signal menu will not show your SSID Ming. Unable to find in signal search menu, so can effectively avoid illegal users invasion.

Open IP address, IPMAC address filtering
Enable wireless router IP address filtering, only the IP address in the list of user access to normal, and other wireless network is connected to networks can list. But should notice, in “filtering rules” must choose “only allowed a MAC address list has visited the MAC address wireless network” option, or wireless router will stop all users connected to networks,
Additionally, if in the wireless LAN banned DHCP function, suggest you use wireless services for each of the computer has been set a fixed IP address, then will the IP address all input IP address list of allowed. It can effectively protect the wireless network security.

Summary:
The wireless network security, in the developed society has become more and more important, whether in the family or business users, the network information safety is always first solve the problem. Due to a wireless network in relative to the wired network security has inherent disadvantages, so we should learn how to protect their information security. Today, the author simply talked about the most commonly used several measures, although not so profound, but against the general situation, you still enough to interest can pay more attention to the aspects of books.