View more with similar tones Document Date:July 30, 2017A man takes part in a hacking contest during the Def Con hacker convention in Las Vegas, Nevada, U.S. on July 29, 2017. REUTERS/Steve MarcusSelect usageCategorySystem ID:RTS19P30IMAGE IDRC1155AC8660Size:5472px × 3648pxFile Size:3MBPhotographer:Steve MarcusCountry:UNITED STATES City:Las Vegas Tags:Nevada SCI Related Images:View More Add to lightbox My First Lightbox Add to cartBuy/download