Breaking news often starts as unsubstantiated rumors. This is the perfect environment for these rumors to spread unchecked. Verifying the credibility of this information is important to be considered a reliable source. To aid in identifying fact or fiction, researchers are working to automatically filter these posts. These filters consider the originating source, use of hashtags, and frequency of posting, among other factors to determine if a post is rumor, non-rumor, or other.
Image source: https://www.nytimes.com/2017/10/20/health/social-media-fake-news.html