Raluca Ada Popa has been named a Visionary in the MIT Technology Review’s list of 35 Innovators Under 35. Popa found a way to make computation on encrypted data practical. Her systems secure computers by making data indecipherable to intruders instead of just relying on firewalls to keep them out. She says her encryption techniques allow systems to operate as if they’ve been blindfolded. They’re able to compute on data without actually seeing it—which is opening the cybersecurity field to a host of new applications. Her innovations are in use by companies like IBM.