Hardware Keyloggers
These are small inline devices placed between the keyboard and the computer. Because of their size they can often go undetected for long periods of time — however, they of course require physical access to the machine. These hardware devices have the power to capture hundreds of keystrokes including banking and email username and passwords.
As soon as the KEYKatcher keylogger is properly plugged in, it is ready to start recording. When you are ready to view the keystrokes your KEYKatcher keylogger has recorded, simply open up any word processor or text editor that you already have on your computer, and type in your KEYKatcher password (the default password is 'keykatch'). When the KEYKatcher keylogger receives the password it will automatically display a menu from which you can choose to perform various actions, such as, view memory (to see what's been typed) or change password (so you can personalize your password).
How to avoid Keyloggers by scramble Keystrokes on Public computers ?First things first! Always try to avoid accessing your online accounts from public computers (cyber cafes…etc). With all the keyloggers that may be stuffed in public computers, they pose a serious security risk to users. Keyloggers mean not just trojans, but commercial keyloggers as well.
What are keyloggers ?
hardware-keylogger-3.gifKey Loggers are software or hardware tools to that captures the user’s keystrokes from keyboard. It can be useful to determine sources of error in computer systems and is sometimes used to measure employee productivity on certain clerical tasks. However, keyloggers are widely available on the Internet and can be used by private parties to spy on the computer usage of others hence stealing users private data.
Aim of this post on keyloggers
Our aim here is to confuse the keylogger by making it log some gibberish instead of our valid password. Off course, this is not completely foolproof though. Nothing is foolproof on the net. We only have to make it harder for the hacker.(Note: These are tips I personally follow. If you have better ones, let everyone know by commenting here.)
Types of Key Loggers
We’ll be dealing with two types of keyloggers; software and hardware keyloggers.
1. Software keyloggers on the other hand are much more complex and hence difficult to deal with. Most of them record keystrokes, mouse events, clipboard activity..etc. So our best bet is to scramble the keystokes smartly.
2. Hardware keyloggers are much easier to detect. They are mostly attached between the keyboard and the CPU. A manual inspection should be enough in most cases.
How to confuse and avoid the software keyloggers ?
Let’s say we have to enter a password ‘jazz’.
1. Click the password box, type any random key. Select the entered random key with the mouse and type j. So we entered the first letter of the password.
2. Click the password box, type a random key. Again click and type a random key. Select the last two letters with your mouse and type the next valid key of your password.
In this case we managed to enter 2 unwanted characters as against one in the first step.
Continue in a similar way to finish typing the password. You can choose any number of random characters between your password.
So the keylogger will log something like:
[click]b[click]j[click]g[click]m[click]a[click]v[click] z[click]t[click]c[click]z
Note how we used unwanted mouse clicks so that a mouse click is recorded before the random letters also. You can also experiment entering the password in the reverse order, infact any order.
This method can be used for entering the username too, since most banks have account numbers as username. If you are suffering from some keylogger phobia, use this technique while typing the url too.
Another way is utilizing the browser’s search bar or address bar to camouflage the password.
For eg. Click the password box and type a letter of the password. Now click the browser’s address bar or search bar and type some unwanted letters. Alternate between the password box and address/search bar till you finish. The result will be the same as the former method.
How to find the hardware keyloggers ?Hardware key loggers are easy to find. They are devices which is attached in between keyboard and cpu junction. If you are really suspicious about them just check the back side of cpu and find if something is fishy. The images will give you a better idea.
hardware-keylogger.jpg
Feeling secure? Well, this sort of stuff may not work against the really smart keyloggers. Yeah, the one’s that also take a screenshot when a keystroke or mouse event is detected.
There’s is a solution for that too, but it is cumbersome. Take a Live CD of any of the Linux distributions. Insert and use ( and hope Linux will detect the hardware so you can start surfing; I have read Ubuntu Linux is good.). Even if you can successfully access from the Live CD, don’t forget to use the above tips to workaround the hardware keylogger.
Again as I mentioned in the beginning, always try to avoid dealing with confidential data from Public Computers.
