This combination of file photos shows Oscar-winner Jennifer Lawrence(L) seen at the 2014 Vanity Fair Oscar Party on March 2, 2014 in West Hollywood, California and pop star Rihanna seen at the2014 MTV Movie Awards at the Nokia Theater in Los Angeles on April 13, 2014. Nude photos purportedly showing many top stars, including Oscar-winner Jennifer Lawrence and pop star Rihanna were circulated on social media Sunday, in an apparent massive hacking leak. Word of the images began spreading early September 1, 2014, amid reports that the photos had been obtained by hacking iCloud accounts, Mashable and other media reported. The leaked photos prompted angry reactions from the stars who had been exposed. "This is a flagrant violation of privacy. The authorities have been contacted and will prosecute anyone who posts the stolen photos of Jennifer Lawrence," Lawrence's agent told entertainment media.