Comic-Con has changed enormously just in the past five years alone. While the arrival of Twilight and Iron Man first heralded a shift towards big movies taking center stage at the annual San Diego event, the evolution of cell phone technology and social media has posed a challenge to studios who aim to share exclusive looks at upcoming films to the fans that have spent lots of time and money making the trip to Comic-Con itself. Footage leaks have been happening for the past few years, but last year things took a bad turn as Warner Bros. unveiled a sizzle reel for Suicide Squad that was intended only for Comic-Con audiences, and was subsequently bootlegged and put up on the internet within minutes. The studio was furious and forced to release the footage online in an official capacity even though this sizzle reel was not how they wanted to first introduce this DC film to the general public.And the same thing happened with the Deadpool trailer that debuted later that same day. While some speculated that studios actually intend or hope for these leaks to happen in order to drum up interest for their films, former Fox studio head Hutch Parker subsequently explained exactly why studios are not happy about footage leaks so far in advance.