Digital footprints are controversial in that privacy and openness compete.[8] Scott McNealy, CEO of Sun Microsystems, said in 1999 Get Over It when referring to privacy on the Internet.[9] The quote later became a commonly used phrase in discussing private data and what companies do with it.[10] Digital footprints are a privacy concern because they are a set of traceable actions, contributions, and ideas shared by users. It can be tracked and can allow internet users to learn about human actions.