Big data is having an increasing effect on the way we live. Big data can be defined as information that is too big or complex to be contained or processed by any one machine or person. It can include which comments, photographs or stories you “like” on Facebook’s website. It also includes seemingly harmless personal information that political campaigns use to reach voters. The presidential election campaign of Donald Trump used big data to reach American voters who normally would not share their opinions with others. It also helped organizers of the campaign to end Britain’s membership in the European Union, known as Brexit.