By : Praveen Tiwari

 It is a malicious technique of tricking a web user into clicking on something different to what the user perceives they are clicking on.  This may result in revealing confidential information or taking control of user’s computer.

 A click jack takes the form of embeded code or a script that can execute without the user’s knowledge. Such as clicking a button.  On a click jacked page, the attackers load another page which is hidden, and when user clicks on it an action is performed.

 No script add-on can be added to mozilla & mobile. It prevents users from clicking on invisible or redressed page elements of embeded docs.  GuardedID is a client side click jacking protection for user of internet explorer and mozilla.  Frame killer is a server side tool which a website owner can include to prevent their user from click jacked.

 Car whisperer is a software tool developed by european security researchers that exploits a key implementation issue in hands free bluetooth in cars.  It allows an attacker to send or receive audio from car kit.

 Car whisper merely waits sending out pings for bluetooth devices.  When one comes into range it negotiates a connection, wherein car whisperer passes the predicted pass key and start the attack.

 Channel hopping is a method to send radio signals in wideband systems by rapidly switching carrier among many frequency channels.  A pseudorandom sequence known to both transmitter and receiver is used so the intended receiver can listen to correct channel.

 It makes radio transmission more secure.  It makes efficient use of radio spectrum by allowing many more users per bandwidth.  It increases data rates and has positive effects on power requirement to broadcast a signal.