Clickjacking is a malicious technique used by cybercriminals to trick web users into revealing confidential information without their knowledge or consent. It involves overlaying legitimate web content with hidden elements that can capture user clicks. These hidden elements are usually disguised as clickable buttons or links, leading users to believe they are interacting with the visible content. However, when users click on these elements, they unknowingly perform actions or provide sensitive information to the attacker.

Option 1 is incorrect as clickjacking is not about sending and receiving data at a high speed; it is about deceptive manipulation of web content.

Option 2 is also incorrect as clickjacking is not about counting clicks on the internet; it is a form of cyber attack.

Option 4 is unrelated to clickjacking as it describes a process for displaying images on mobile devices.

In conclusion, clickjacking is a technique that exploits the trust placed by users in visible web content to deceive them into performing actions or divulging confidential information.