that was gold. >> reporter: and gold for roger nierenberg. his original business motivation was to help save the dying industry to which he's devoted his life. >> i saw that the big problem for classical music in america is that we don't have enough audience. i have found a way to enroll people, to get people to feel classical music, in a powerful way, in an artistic way. what really matters to me is the extent to which the music has gotten through to them. >> reporter: and sticks. sticks as well as the hospital hopes his business lessons will. for the pbs newshour, this is economics correspondent, reporting from mohonk mountain, new york. >> woodruff: now, the discovery of a cybersecurity risk that could potentially cripple computers, smartphones and the cloud system that people rely on. fixes are on the way, but they present their own problems. hari sreenivasan gets the latest on what's prompting these worries and what technology companies are doing to stop potential hacks. >> sreenivasan: the risks, as it turns out, have been there for som