There has been cases where a user was caused bodily harm through mobile social media. For example, Kurt Eichenwald was sent a tweet with a flashing animated image by another user who knew that Eichenwald had epilepsy, causing a seizure.[24] As a result of these dangers, many mobile social networks such as Twitter and Facebook have implemented various methods for protecting user safety such as removing harmful users, detecting malware, and verifying a user's identity; however, these policies are still in the workings.