Lets know about clickjacking which is nowdays a big challenge for security experts and due to this unsecure website are attacked and frauds are done.
Clickjacking attacks can be executed in a number of interesting ways, so any one example will only touch the tip of what is possible with this type of attack. By way of an example, a clickjacker can take a login button from one site and hide it under a different element on an invisible page that when clicked could initiate malicious code. It is also possible for an attacker to trick a flash game player to click a seemingly innocent button that could grant site access to the computer's webcam and microphone.
There are in fact a number of security vulnerabilities that are exploited using clickjacking. They range from Adobe Flash vulnerabilities to ActiveX control options. This kind of attack can be difficult to police because the browser often sees the clickjacking attacks as authorized requests from the user, thus opening the way for all sorts of malicious actions to be executed through the victim's browser and other software such as Adobe Flash. While there are some steps that users can take to protect themselves, the most effective security measures will have to be done on the back-end, especially considering that the most effective solution will limit and impede a website’s functionality. Here are some ways to protect yourself against these attacks: