CS Profs Dawn Song and Hany Farid are among Wired Magazine’s list of 25 People Who Are Racing to Save Us (WIRED25 list of innovators for 2019). Song is the co-founder and CEO of Oasis Labs, a startup built around differential privacy—cryptographic techniques that allow companies to incorporate data into their algorithms without seeing the individual data points. Song believes blockchain technology can help offer a secure home for data that doesn’t require trusting any one company with the keys to it. Her system would enable you to copy your medical data to a location where researchers who are working to cure diseases could access it without compromising your privacy. Farid is a pioneer of image science, having been one of the first to develop methods to detect when digital photos have been manipulated. He is now one of the leading authorities on Deepfakes: images, videos, or audio files fabricated or altered by machine learning. Lately, Deepfakes have been used to mislead and manipulate the public during politicial elections. “This used to be a boutique little field, but now we’re defending democracy,” says Farid.