1. A method for detecting click fraud comprising: receiving data corresponding to a tracking of movement of a cursor on a web page prior to a click on an item on the web page; associating the path of movement of the cursor with a set of vectors; determining a confidence level useable in a determination of a possible click fraud attempt based on a level of variability of at least a slope between vectors of at least a subset of the set of vectors representing at least a portion of the path of movement of the cursor; receiving the click on the item on the web page; and denying the click in response to the confidence level being at a level indicating the possible click fraud attempt.