What actually is ... a bot?

The word bot is derived from the English word "robot" and stands for an automatically executed action that artificially drives up clicks on a website. It is a computer program that provides a non-humanly possible service. Bots are one of several ad fraud variants.
In order to recognize bots, there are mechanisms that react to inappropriate behaviour. Algorithms calculate these and filter the impressions/clicks so that they are not counted. This also protects customers from bots. These mechanisms must be constantly adapted, as the programs (bots) are constantly evolving.
Term explained by Joy HoppePartner and Product Manager Goldbach Audience (Switzerland).
