::What is CAPTCHA and How it Works?::

What is CAPTCHA and How it Works?

CAPTCHA or Captcha (pronounced as cap-ch-uh) which stands for “Completely Automated Public Turing test to tell Computers and Humans Apart” is a type of challenge-response test to ensure that the response is only generated by humans and not by a computer. In simple words, CAPTCHA is the word verification test that you will come across the end of a sign-up form while signing up for Gmail or Yahoo account. The following image shows the typical samples of CAPTCHA.

 

 

Almost every Internet user will have an experience of CAPTCHA in their daily Internet usage, but only a few are aware of what it is and why they are used. So in this post you will find a detailed information on how CAPTCHA works and why they are used.

 

What Purpose does CAPTCHA Exactly Serve?

CAPTCPA is mainly used to prevent automated software (bots) from performing actions on behalf of actual humans. For example while signing up for a new email account, you will come across a CAPTCHA at the end of the sign-up form so as to ensure that the form is filled out only by a legitimate human and not by any of the automated software or a computer bot. The main goal of CAPTCHA is to put forth a test which is simple and straight forward for any human to answer but for a computer, it is almost impossible to solve.

 

What is the Need to Create a Test that Can Tell Computers and Humans Apart?

For many the CAPTCHA may seem to be silly and annoying, but in fact it has the ability to protect systems from malicious attacks where people try to game the system. Attackers can make use of automated softwares to generate a huge quantity of requests thereby causing a high load on the target server which would degrade the quality of service of a given system, whether due to abuse or resource expenditure. This can affect millions of legitimate users and their requests. CAPTCHAs can be deployed to protect systems that are vulnerable to email spam, such as the services from Gmail, Yahoo and Hotmail.

 

Who Uses CAPTCHA?

CAPTCHAs are mainly used by websites that offer services like online polls and registration forms. For example, Web-based email services like Gmail, Yahoo and Hotmail offer free email accounts for their users. However upon each sign-up process, CAPTCHAs are used to prevent spammers from using a bot to generate hundreds of spam mail accounts.

 

Designing a CAPTCHA System

CAPTCHAs are designed on the fact that computers lack the ability that human beings have when it comes to processing visual data. It is more easily possible for humans to look at an image and pick out the patterns than a computer. This is because computers lack the real intelligence that humans have by default. CAPTCHAs are implemented by presenting users with an image which contains distorted or randomly stretched characters which only humans should be able to identify. Sometimes characters are striked out or presented with a noisy background to make it even more harder for computers to figure out the patterns.

Most, but not all, CAPTCHAs rely on a visual test. Some Websites implement a totally different CAPTCHA system to tell humans and computers apart. For example, a user is presented with 4 images in which 3 contains picture of animals and one contain a flower. The user is asked to select only those images which contain animals in them. This Turing test can easily be solved by any human, but almost impossible for a computer. 

 

Breaking the CAPTCHA

The challenge in breaking the CAPTCHA lies in real hard task of teaching a computer how to process information in a way similar to how humans think. Algorithms with artificial intelligence (AI) will have to be designed in order to make the computer think like humans when it comes to recognizing the patterns in images. However there is no universal algorithm that could pass through and break any CAPTCHA system and hence each CAPTCHA algorithm must have to be tackled individually. It might not work 100 percent of the time, but it can work often enough to be worthwhile to spammers.
EnjOy.. =))
MamoOn..

:How to Change the Logon Screen Background in Windows 7 :

How to Change the Logon Screen Background in Windows 7

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 or 1024 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

HKLM\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.
I hope you like this trick. Just try out and give your feedback!

EnjOy.. :))
MamoOn..

:: How to Create Your Own Customized Run Commands ::

How to Create Your Own Customized Run Commands

The Run command on Microsoft Windows operating system allows you to directly open an application or document with just a single command instead of navigating to it’s location and double-clicking the executable icon. However, it only works for some of the inbuilt Windows programs such as Command prompt (cmd), Calculator (calc) etc. So, have you ever wondered how to create your own customized Run commands for accessing your favorite programs, files and folders? Well, read on to find out the answer.

Creating the Customized Run Command

Let me take up an example of how to create a customized run command for opening the Internet explorer. Once you create this command, you should be able to open the Internet explorer just by typing “ie” (without quotes) in the Run dialog box. Here is how you can do that.

1. Right click on your Desktop and select New -> Shortcut.

2. You will see a “Create Shortcut” Dialog box as shown below

3. Click on “Browse”, navigate to: Program Files -> Internet Explorer from your Root drive (usually C:\) and select “iexplore” as shown in the above figure and click on “OK”.

4. Now click on “Next” and type any name for your shortcut. You can choose any name as per your choice; this will be your customized “Run command”. In this case I name my shortcut as “ie”. Click on “Finish”.

5. You will see a shortcut named “ie” on your desktop. All you need to do is just copy this shortcut and paste it in your Windows folder (usually “C:/Windows”). Once you have copied the shortcut onto your Windows folder, you can delete the one on your Desktop.

6. That’s it! From now on, just open the Run dialog box, type ie and hit Enter to open the Internet Explorer.

In this way you can create customized Run commands for any program of your choice. Say “ff” for Firefox, “ym” for Yahoo messenger, “wmp” for Windows media player and so on.

To do this, when you click on “Browse” in the Step-3, just select the target program’s main executable (.exe) file which will usually be located in the C:\Program Files folder. Give a simple and short name for this shortcut as per your choice and copy the shortcut file onto the Windows folder as usual. Now just type this short name in the Run dialog box to open the program.
I hope you like this post! Pass your comments
EnjOy.. :))
MamoOn..

:: How to hack Yah0o Password ::

How to Hack a Yahoo Password

Every day,  a lot of people contact me about suspecting their boyfriend or girlfriend of cheating, and ask me how to hack their Yahoo password so as to find out the truth. If you are in a similar situation and wondering to know how to hack a Yahoo password, then this is the post for you. In this post, I will uncover some of the real and working ways to do that.

Is it possible to hack Yahoo?

Yes! As a matter of fact, it is possible to hack almost any email password. But before you learn the real ways of hacking, the following are the things you should be aware of:

1. Never trust any hacking service that claims to hack Yahoo password for just $100 or $200. In most cases they will rip off your pockets with false promises. Sometimes they may even start to threaten you by blackmailing that they are going to inform the victim or the cyber crime officials about your hack attempt. So, to be on the safer side, it is better to stay away from such scam websites.

2. Beware! On many websites and web portals you will often come across a fake tutorial on email hacking. The tutorial will tell you something like “You need to send the target email address along with your username and password to yahoo_pass_reset@yahoo.com (or similar)” to hack the password of the target account. This method seems too good to be true but, if you follow this method, you will lose your own password in attempt to hack someone else’s password.

With my experience of over 7 years in the field of hacking and cyber security, I can tell you that there are only TWO ways to hack Yahoo password. They are keylogging and phishing.

All the other email hacking methods are simply scam or don’t work! The following are the only 2 foolproof methods that work.

1. Keylogging: Easiest Way to Hack Yahoo Password

Using a keylogger is the easiest way to hack Yahoo password. A keylogger is a small program that records each and every keystroke (including passwords) that a user types on a specific computer’s keyboard. A keylogger is also called as spy program or spy software. To use it, you don’t need to have any special knowledge. Anyone with a basic knowledge of computer should be able to install and use this software. With my experience, I recommend the following two keyloggers as the best for hacking Yahoo password.

1. SniperSpy (Tested)

2. WinSpy (Tested)

I don’t have physical access to the target computer, can I still use SniperSpy?

Yes, you can! Since both SniperSpy and WinSpy offers Remote Installation Feature, it is possible to remotely install the keylogger on the target computer. However, it will also work on a local computer.

How to use SniperSpy?

1. After you download it, you will be able to create the installation module. You need to email this module to the remote user as an attachment.

2. When the remote user runs the module, it will get installed silently and the monitoring process will begin. The keystrokes are captured and uploaded to the SniperSpy servers continuously.

3. You can login to your online SniperSpy account (you get this after purchase) to see the logs which contains the password.

NOTE: If you have physical access to the target computer, you can simply install the module by yourself without the need to email it as an attachment.

The working of Winspy is somewhat similar to that of SniperSpy.

Once I install SniperSpy, can the victim come to know about it’s presence?

No. The victim will not come to know about it’s presence on his/her computer. This is because, after the installation, SniperSpy will run in a total stealth mode. Unlike other spy programs, it will never show up in start-menu, start-up, program files, add/remove programs or task manager.

Can I be traced back if I install it on some other computer?

No, it’s almost impossible to trace back to you for installing the keylogger on other’s computer.

How safe is to use SniperSpy?

Sniperspy is completely safe to use since all the customer databases remain confidential and private. SniperSpy will neither collect any information from your system nor will contact you in any way unless you request assistance.

What are the other features of SniperSpy software?

1. With SniperSpy, you can gain access to any password protected account including Yahoo, Gmail, Hotmail, MySpace, Facebook etc.

2. This software will not only capture passwords, but will also take screenshots and record chat conversations.

3. This product is extremely easy to use so that, even novice users can install and use it with ease.

Click Here to Download SniperSpy for Windows

Click Here to Download SniperSpy for Mac

2. Other Ways To Hack Yahoo Password

The other most commonly used trick to hack Yahoo password is by using a fake login Page (also called as Phishing). Today, phishing is the most widely used technique to hack Yahoo password. A fake login page is a page that appears exactly similar to the login pages of sites like Yahoo, Gmail, Facebook etc. The victim is tricked to believe this fake login page to be the real one. But once he/she enters the password there, they end up losing it.

Phishing can be very effective when implemented successfully. But creating a fake login page and taking it online to make the hack attempt successful is not an easy job. It demands an in depth technical knowledge of HTML and scripting languages like PHP or JSP.

So, if you are new to the concept of hacking passwords, then I recommend the use of keyloggers as the best to hack Yahoo password.
Enjoy ....:))
MamOon..

::Few Google Tricks for Begineers::

A few things you might want to try with Google:
Hand type the following prefixes and note their utility:

• link:url Shows other pages with links to that url.
• related:url same as "what's related" on serps.
• site:domain restricts search results to the given domain.
• allinurl: shows only pages with all terms in the url.
• inurl: like allinurl, but only for the next query word.
• allintitle: shows only results with terms in title.
• intitle: similar to allintitle, but only for the next word. "intitle:webmasterworld google" finds only pages with webmasterworld in the title, and google anywhere on the page.
• cache:url will show the Google version of the passed url.
• info:url will show a page containing links to related searches, backlinks, and pages containing the url. This is the same as typing the url into the search box.
• spell: will spell check your query and search for it.
• stocks: will lookup the search query in a stock index.
• filetype: will restrict searches to that filetype. "-filetype:doc" to remove Microsoft word files.
• daterange: is supported in Julian date format only. 2452384 is an example of a Julian date.
• maps: If you enter a street address, a link to Yahoo Maps and to MapBlast will be presented.
• phone: enter anything that looks like a phone number to have a name and address displayed. Same is true for something that looks like an address (include a name and zip code)
• site:www.somesite.net "+www.somesite.+net"
• (tells you how many pages of your site are indexed by google)
• allintext: searches only within text of pages, but not in the links or page title
• allinlinks: searches only within links, not text or title
  
  EnJoy..:))
• MamOon..
  
  

Windows 7 Keyboard Shortcuts

Windows 7 Keyboard Shortcuts

Let's kick off with keyboard shortcuts – the first thing every power user must memorize with working with a new operating system. In Windows 7, we’ve uncovered several new sets of essential time-saving shortcuts that will make your mouse jealous with neglect.

Alt + P

In Windows Explorer, activate an additional file preview pane to the right side of the window with this new shortcut. This panel is great for previewing images in your photos directory.

Windows + + (plus key)

Windows + - (minus key)

Pressing the Windows and plus or minus keys activates the Magnifier, which lets you zoom in on the entire desktop or open a rectangular magnifying lens to zoom in and out of parts of your screen. You can customize the Magnifier options to follow your mouse pointer or keyboard cursor. Keep in mind that so far, the Magnifier only works when Aero desktop is enabled.

Windows + Up

Windows + Down

If a window is not maximized, pressing Windows + Up will fill it to your screen. Windows + Down will minimize that active window. Unfortunately, pressing Windows + Up again while a window is minimized won’t return it to its former state.

Windows + Shift + Up

Similar to the shortcut above, hitting these three keys while a window is active will stretch it vertically to the maximum desktop height. The width of the window will however stay the same. Pressing Windows + Down will restore it to its previous size.

Windows + Left

Windows + Right

One of the new features of Windows 7 is the ability to automatically make a window fill up half of your screen by dragging to the left or right. This pair of shortcuts performs the same function without your mouse. Once a window is fixed to one side of the screen, you can repeat the shortcut to flip it to the other side. This is useful if you’re extending a desktop across multiple monitors, which prevents you from executing this trick with a mouse.

Windows + Home

This shortcut performs a similar function to hovering over a window’s peek menu thumbnail in the Taskbar. The active window will stay on your desktop while every other open application is minimized. Pressing this shortcut again will restore all the other windows.

Windows + E

Automatically opens up a new Explorer window to show your Libraries folder.

Windows + P

Manage your multiple-monitor more efficiently with this handy shortcut. Windows + P opens up a small overlay that lets you configure a second display or projector. You can switch from a single monitor to dual-display in either mirror or extend desktop mode.

Windows + Shift + Left

Windows + Shift + Right

If you are using two or more displays (and who isn’t, these days?), memorize this shortcut to easily move a window from one screen to the other. The window retains its size and relative position on the new screen, which his useful when working with multiple documents. Utilize that real estate!

Windows + [Number]

Programs (and new instances) pinned to your Taskbar can be launched by hitting Windows and the number corresponding to its placement on the Taskbar. Windows + 1, for example, launches the first application, while Windows + 4 will launch the fourth. We realize that this is actually one key-press more than just clicking the icon with your mouse, but it saves your hand the trouble of leaving the comfort of the keyboard.

Windows + T

Like Alt + Tab (still our all time favorite Windows specific shortcut), Windows + T cycles through your open programs via the Taskbar’s peek menu.

Windows + Space

This combo performs the same function as moving your mouse to the bottom right of the Taskbar. It makes every active window transparent so you can view your desktop. The windows only remain transparent as long as you’re holding down the Windows key.

Ctrl + Shift + Click

Hold down Ctrl and Shift while launching an application from the Taskbar or start menu to launch it with full administrative rights.

Ctrl + Click

Hold down Ctrl while repeatedly clicking a program icon in the Taskbar will toggle between the instances of that application, like multiple Firefox windows (though not browser tabs).

EnjOy..

MamoOn..