Fake news is a type of yellow journalism that consists of deliberate misinformation or hoaxes spread via the traditional print, broadcasting news media, or via Internet-based social media. Fake news is written and published with the intent to mislead in order to gain financially or politically, often with sensationalist, exaggerated, or patently false headlines that grab attention. As such, intentionally misleading and deceptive fake news is different from obviously satirical or parody articles or papers such as The Onion. Fake news often employs eye-catching headlines or entirely fabricated news stories in order to increase readership and, in the case of internet-based stories, online sharing and Internet click revenue. In the latter case, profit is made in a similar fashion to sensational online "clickbait" headlines and relies on advertising revenue generated from this activity, regardless of the veracity of the published stories.
Easy access to online advertisement revenue, increased political polarization between the left and right, and the ubiquity and popularity of online social media, primarily the Facebook newsfeed, have all been implicated in the spread of fake news. Anonymously-hosted fake news websites lacking known publishers have also been implicated, because they make it difficult to prosecute sources of fake news for libel or slander. The relevance of fake news has experienced greater growth in a post-truth reality. In response, researchers have explored the development of a psychological "vaccine" to help people to detect a fake news.
Fake news is a new term, or neologism, used to refer to fabricated news. Fake news originated in traditional news media but has now spread to online media. This type of news found in traditional news, social media or fake news websites have no basis in fact, but are presented as being factually accurate. Michael Radutzky, a producer of CBS 60 Minutes, said his show considers fake news to be "stories that are provably false, have enormous traction [popular appeal] in the culture, and are consumed by millions of people". He did not include fake news that is "invoked by politicians against the media for stories that they don't like or for comments that they don't like". Guy Campanile, also a 60 Minutes producer said, "What we are talking about are stories that are fabricated out of thin air. By most measures, deliberately, and by any definition, that's a lie." The intention and purpose behind fake news is important. In some cases, what appears to be fake news may in fact be news satire, which uses exaggeration and introduces non-factual elements, and is intended to amuse or make a point, rather than to deceive. Propaganda can also be fake news.