Hacking North Korea, Mazda, and stealth satellites

Cyber Context

Jonathan discusses how a victim of a North Korean cyber attack shut down that country's internet and whether companies can go on the offensive against cyber threats. He also ponders whether most “hacktivists” are in fact working for governments. Does the disablement of a Mazda via an image file from a HD radio station open up a new attack vector not previously considered? The FCC is pressing manufacturers and operators to harden satellites against cyber attack, but will this happen without the right incentives in place?