A system and method for detecting click fraud where data related to at least one vector associated with a path taken by movement of a cursor on a web page prior to an advertisement on the web page being clicked by a controller of the cursor is received. Click fraud is detected based on an analysis of the received data. A pattern in the at least one vector is analyzed to determine if the cursor movement is human-like and a click fraud detected if the cursor movement is not human-like. In another embodiment, the at least one vector associated with the path is stored and compared with previously stored vectors associated with the path and a click fraud detected if the stored at least one vector is analogous to at least one of the previously stored vectors associated with the path.