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February 28, 2012

Simple Steganography to hide file(s) under an image in Windows

Hi all,

Do you want to hide your files under an image to secure important data? That is called Steganography.

In Windows with "copy" command, it is possible.

Pre-Requisites:
An image file with any image file extension .jpg, .png etc
A File to hide in any format
An archive file manager like WinRAR, 7-Zip etc.


Procedure:

We will be explaining with sample example and the following files will be used in the explanation.

cutebaby.jpg -> Cover Image, which hides the data file
topsecret.txt -> file to be hidden
babygirl.jpg -> stego image, which contains hidden data file
E:\PSR\My\Experiments\Steganography -> Working Folder



  • After arranging the pre-requisites as above shown, archive your data file (file to hide). In this example, it is "topscret.txt"




  • Now you will be getting the archive file named "topscret.zip" in the file explorer
  • Open Command Prompt and Navigate to the corresponding folder. In this example
  • Delete the "topscret.txt" by using the "del" commad
  • Now, run the copy command with the following syntax 
    • Syntax: copy /b +  
    • Example: copy /b cutebaby.jpg + topsecret.txt babygirl.jpg
  • It will create an image file which contains hidden data file in it.
  • To view the stored data file from the image, open the image file from archive viewer.
  • Specify the path to extract
  • Click on "Extract" button
  • View the file list from Windows explorer and/or command prompt
  • Check the data file content
Note:
  • The stego image file size would be more than the data file + cover image file size
  • Any one can view the data file if they know that data file is hidden under the cover image
 
If you have any queries, send mail to psrdotcom@gmail.com

February 22, 2012

Title Bar Missing Problem When Alt + Space keys pressed in Ubuntu for Window Menu Barwith Solution

Hi friends,

I had been facing an issue in my Ubuntu desktop edition.

The problem is, when I was pressing Alt+Space buttons on keyboard for window menu bar, the window title bar is gone.

I was surprised !!!

This will a big headache till you do any one of the following actions Logout, Restart or Shutdown your system (PC).

Finally after searching in Internet, I found the solution which worked for my Ubuntu desktop.

I would like to share that to all.


Solution 1:
  • If you have installed "Compiz" then,
  • Please go to "CompizConfig Settings Manager"
  • Check whether "Window Decoration" option is checked or not.
  • If it is unchecked then "Check" it.

Solution 2:
  • In command prompt (Console) window type the following command
    • $ unity --reset

If solution 1 is not working for you then please go ahead with solution 2.

If you have any queries, you can reach me by mailing to psrdotcom@gmail.com

February 21, 2012

Check Website Link (URL) for Safe Browsing to Prevent from Malicious Virus Attacks

Hi friends,

I downloaded a software. In "Readme.txt", I found a link and I would like to check how safe the link. Because, I was worried, what if, if I open the link and some virus installed automatically. So, I was searching for checking website URL (link) for safe browsing. I found that every Anti-Virus company got an option to do that.

Here you go and paste your Website URL (Link) for checking the content for safe browsing.

Online Webpage Virus Scanners:



Off-line Webpage Virus Scanners:


How the online webpage scanners works:

You need to copy the URL (Link) which you want to test for safe browsing.
Paste the URL (Link) in any of the online webpage scanners, and click on "Check" button if available or Press "Enter (Return)" button.
You will get the website (page) test report.
In some online webpage scanners, they have categorized the sites into groups and displaying that group.

Test Results:

I have tested one of best webpage in the world google.com and one infected site [1] orgsite.info

You can see the results of different online webpage scanners below

AVG Online Webpage Scanner:

Google Webpage Result

orgsite.info Webpage Result

Norton Online Webpage Scanner:

Google Webpage Result

orgsite.info Webpage Result:

McAfee Online Webpage Scanner:

Google Webpage Result:

orgsite.info Webpage Result:


TrendMicro Online Webpage Scanner:

Google Webpage Result:

orgsite.info Webpage Result:


By these links, whenever you are having a doubt about newly visiting URL (Link), you can always check browse the content

References:

February 10, 2012

Try day to day useful tools on your Windows/Linux(Ubuntu) operating system

Hi friends,

When I was surfing the internet, I found some useful day to day applications/tools. I thought "let me share these applications", so that atleast someone will get benefit from at least some of the tools which they are looking for.

Let me briefly explain, what it contains. The best applications/tools in 2011 developed in Windows and Ubuntu operating systems.

I personally liked,

Ubuntu Applications

News-RSS Ticker: Place your feed on desktop
Blogilo: Desktop Blogging client
MyPaint: Paint app similar to windows
Cairo-Dock: Mac like dock
Lockit: Take screenshot of app or specific area
Desktop Nova: Wallpaper rotator
Gnome Subtitles: Customize subtitles for a movie or any video
Touchpad Indicator: Automatically disable touchpad when mouse is connected
Live USB Installer: Load operating system to USB and use it anywhere you want (Carry OS with you)

Windows Applications

FTP Scheduler: Schedule your FTP upload/download file times
Tweak IE9: For better security in IE and Groupping Tabs like Firefox
CSVed: Editor to edit CSV like files
DiffPDF: Compare the differences between PDF files
TexMaker: Editor for Latex files
Folder Axe: Split your large files
Mosaic: Windows 8 look in Windows 7
Image Composite Editor: Stich photos to make panorama image
BlueStacks: Run Android apps and Games in windows
Batch Compiler: Compile you batch files and make executable
TyperText: Specify your own keyboard shortcuts to run/launch applications and even website links
KumoSync: Sync your google docs to local computer
Soluto: Remotely manage and fix PC Issues

Lot more tools are available online .. Hope some of the above apps will be useful to you.

References:
www.addictivetips.com/ubuntu-linux-tips/best-60-linux-applications-for-year-2011-editors-pick/
http://www.addictivetips.com/windows-tips/150-best-windows-applications-of-year-2011-editors-pick/

February 02, 2012

ICICI Bank ATM Debit Card PIN Changing Procedure with Telephone Codes

Hi friends,
I have mistakenly typed the ATM pin 3 times at ATM. My ICICI card was blocked. This was the second time, it happened to me. I have generated the new PIN by calling customer care.

Then I thought let me write the procedure to activate it through the telephone/mobile.

Please follows these steps to activate your debit card with new ATM pin
  1. Turn Back your ICICI card, where your magnetic strip, cvv and grid exists. 
  2. On top of the card, you will find the major cities names along with customer care number. 
  3. Please call to any one of the customer care number (preferably your region/nearest phone number)
  4. 1111
    • 1 -> Language Selection (English)
    • 1 -> Existing Customer
    • 1 -> Banking related queries
    • A/c No. (or) Debit Card Number: Full Account Number (or) 16-digit debit card number
    • 1 -> Generate PIN
    • Card Expiry Date: Enter in the following format Ex: For Mar-2012, Please enter 0312
  5. Then the call will be connected to phone banking officer
  6. They will ask some security questions regarding your account details, which you have entered in the application form.
  7. Once the verification gets over, then the officer will transfer your call, So that you can generate your new PIN
  8. System will read the last 4 digits of your debit card
  9. You need to enter
    • CVV -> Back of your card, 3-digit CVV will be displayed along with your last 4 digits of your card number
    • New PIN -> Which you would like to change
    • Re-enter PIN -> Same PIN which you have entered as New PIN

Within no time, you can use debit card ATM PIN.

For further assistance:
http://www.icicibank.com/customer-care.html

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