Cleaning the Sasser worm on Windows XP

If you use Microsoft Windows XP or Windows XP Service Pack 1 (SP1) and your computer has been infected with the Sasser worm, you can follow the steps below to change your software, remove the worm, and provide protection from subsequent attacks.

Step 1: Disconnect your computer to the Internet
To prevent further problems, drop out of Internet connection your computer:

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For Broadband Internet Connection Users Find the cable that connects the computer to a modem or a cable that connects the computer to the modem or the telephone connection. Freelance cord from the modem or the phone line, so that your computer into an Internet connection is lost.
Dial-up connection users: Find the cable that connects the internal modem in your computer to a telephone connection, then unplug it to keep your computer connects to the Internet.

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Step 2: Stop the Shut down Cycle
This worm will cause the file lsass.exe not react to other commands (stop responding), which then causes the operating system shut down again after 60 seconds. If you begin to shut down your computer, follow these steps for the system did not experience a shut down.

On the taskbar below your computer screen, click Start, then click Run.
Enter: Cmd and then click OK.
At the command prompt, type: shut down.exe-a and then press ENTER button.
Step 3: Perform Prevention
You can periodically remove all signs of the worm infects your computer by creating a log file.

Human Interaction and Computer

Field of human interaction and computer science is the study of how to design, evaluate, and implement an interactive computer system that can be used by humans easily. 
 
In the era of technology have now, almost whole life humans depending on the engine. Because so the importance of the machines for humans, the machines were then made ​​as easy as possible for use. Computer is a machine that created to help the life of humanity, to all fields, such as banking, education, government, trade, military, and so forth.
 
In computer technological developments, both hardware and software, is increasingly rapidly, although essentially the engine computer is very stupid, but humans can make it so smart. Humans have been provided and include various commands on the computer so the computer can perform a variety of jobs in want human.
 
Human-computer interaction is a discipline that examines the communication or interaction among the users with the system. The system in the intention here is not only the existing system on the computer but also which many systems in use in everyday life, such as household appliances and so forth.

Human and computer interaction (human-computer interaction, HCI) is the discipline of science that studies the relationship between humans and computers that include design, evaluation, and implementation of computer user interface for easy use by humans. While the human and computer interaction itself is a series of processes, dialogues and activities undertaken by humans to interface with the computer that the two are providing input and feedback through an interface to obtain the final result expected.

Some aspects that are the focus in the design of an interface is:

    1. The methodology and processes used in designing an interface.
    2. Interface implementation methods.
    3. Methods of evaluation and comparison of the interface.
    4. Development of new interface.