To keep its operating system and all software updated to the latest versions are more important than ever. The largest and most dangerous viruses that spread, they are exploiting security holes in the system and programs.
By using open security holes can malware execute itself, which means that the virus can activate itself, but that you have done something.
As an example, the virus Conficker , using a security hole that was found in Windows in October 2008. Microsoft was right to speed up with an update ( MS08-067 ) to fill the hole, but since so many users do not bother to update so the virus spread like wildfire over the coming months. In March, the media was full of articles about Conficker.
Among the most important programs to keep updated are the tools you use on the Internet. The browser, for example, and the additions are to the browser. Apple QuickTime , many people use to watch movies on the web. According to a safety report from Kasersky , published in March, was by far the largest QuickTime security culprit. Over 80 percent of vulnerabilities found in software among users in 2008, had to do with QuickTime.
To upgrade to more secure software
Many programs have built-in functions to update themselves. It is quite common that they install a small background program that is and check for updates of the Internet. Do you have a hardware firewall may be a problem, if the tools do not have Internet access.
I myself am not so fond of these tools, because every little helps get the right amount of internal and performance. When the Windows system tray is full of unnecessary icons anywhere you want to get rid of them.
If you start a program and it pops up a box on the new version, so it is good to accept it and download the upgrade. But to manually check all installed applications for new versions is a very big project. Then it’s good that there are solutions that do it for you.
Update Notifier is a free program that scans your computer for installed software, compare version numbers against a database and then tell you which ones are utgågna. In most cases, you can click through to the manufacturer’s website to download the new version.
When you install the Update Notifier will ask you if you want to run when Windows starts. It is a good idea, because the program then will continually check for new versions of your programs. Pops something up, you get a message and you can update right away. Because viruses and other attacks spread very quickly today, it is important to be quick with the updates.
An alternative to the Update Notifier is Secunia PSI , which is more focused on finding outdated software with security holes. PSI has the advantage that also talk about why you should download an update, by displaying a graphic bar on how serious safety your current version has. When I test drove Secunia PSI found a number of programs with security holes that opened up for the intrusion. By clicking on the icon in the Solution load the home of the last update, or sent to a Web page from which you can download the file.
Remove the safety program
As a final piece of advice for keeping your PC fresh and blocked by security holes, I suggest that you go through your installed applications and remove those you do not use. This not only frees up space on your hard drive, but you make your computer more secure. Since you do not use the programs you will probably not update them, and then it is unnecessary for them to remain just in case you find security holes in them.
To uninstall the software, I recommend Revo Uninstaller in Control Panel> Add or Remove Programs. You pick Revo Uninstaller free and it helps you to uninstall programs much more efficiently. The tool cleans namely also removed any remaining registry keys and temporary files. When you uninstall a program, choose Moderate or Advanced mode for best results.
Upgrading Windows properly

1. Auto-update
Make sure to activate the automatic update of Windows, so you will not have to manually check for updates. You do this via the Security Center in Control Panel.
2. Windows Update
If you have not updated Windows in a long time, you can go towindowsupdate.microsoft.com and download everything from here.
3. Drivers
Windows Update can also give suggestions for new drivers, you should download the hardware you have installed. This is recommended.

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