Saturday, 5 March 2011

CHANGE WINDOWS 7 LOGON SCREEN BACKGROUND

How would you like to change the logon screen background in Windows 7 so as to give your Windows a customized look and feel? With a small tweak it is possible to customize the Windows 7 logon screen and set your own picture/wallpaper as the background. Changing logon screen background in Windows 7 is as simple as changing your desktop wallpaper. Well here is a step by step instruction to customize the
logon screen background.

1. The image you need to set as the background should be a .jpg file and it’s size should not exceed 245KB.

2. The image resolution can be anything of your choice. However I prefer 1440 x 900 or1024 x 768. You can use any of the photo editing software such as Photoshop to compress and set the resolution for your
image. Once you’re done, save this image as backgroundDefault.jpg.

3. You will need to copy this image to
C:\Windows\system32\oobe\info\backgrounds
You will need to create that path if it does not already exist on your computer.

4. Now open the Registry Editor (Start -> Run -> Type regedit) and
navigate to the following key
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Authentication\LogonUI\Background
If Background does not exist rightclick LogonUI, select New and then Key, and then name it Background. Now locate OEMBackground (listed on the right side). If it does not exist, right-click Background and
select New and then DWORD and name it OEMBackground.

5. Double-click on OEMBackground and set the Value Data to 1.

6. Now log-off to see the new logon screen background. If you would like to revert back to the default background, just set the Value Data back to 0.

Ethical Hacking

Ethical hacking, often performed by white hats or skilled computer experts, is the use of programming skills to determine vulnerabilities in computer systems. While the non-ethical hacker or black hat exploits these vulnerabilities for mischief, personal gain or other reasons, the ethical hacker evaluates them, points them out, and may suggest changes to systems that make them less likely to be penetrated by black hats. White hats can work in a variety of ways. Many companies utilize ethical hacking services from consultants or full-time employees to keep their systems and information as secure as possible.

The work of ethical hacking is still considered hacking because it uses knowledge of computer systems in an attempt to in some way penetrate them or crash them. This work is ethical because it is performed to increase the safety of the computer systems. It’s reasoned that if a white hat can somehow break the security protocols of a system, so can a black hat. Thus, the goal of ethical hacking is to determine how to break in or create mischief with the present programs running, but only at the request of the company that owns the system and specifically to prevent others from attacking it.

Wednesday, 2 March 2011

Facebook Addict

No doubt Facebook has revolutionized social networking. Today no one is far. Everyone is in contact 24x7. But it cannot be neglected the fact that people are so involved online that they hardly socialize physically. Students are 24 hours online, even in their classes. Teacher delivering lecture and students chatting on Facebook is common in classes.