"Zero days" are bugs in software that hackers use to break into systems. Some are valued at up to a million dollars, with both buyers and sellers shrouded in secrecy. This episode of Cyberwar first aired on VICE TV in 2016. Help keep VICE News’ fearless reporting free for millions by making a one-time or ongoing contribution here. - https://vice.com/contribute Subscribe to VICE News here: http://bit.ly/Subscribe-to-VICE-News Check out VICE News for more: http://vicenews.com Follow VICE News here: TikTok: https://www.tiktok.com/@vicenews?lang=en Facebook: https://www.facebook.com/vicenews Twitter: https://twitter.com/vicenews Instagram: http://instagram.com/vicenews More videos from the VICE network: https://www.fb.com/vicevideo #VICENews #News