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Ever since the first Microsoft Word macro attack, documents have been a source of malware delivery. Thirty years later it's still a problem. Word documents, PDFs, photographs, spreadsheets, they all remain potent delivery mechanisms for hackers. The Defense Advanced Research Projects Agency, DARPA, has for several years run a program called SafeDocs, aimed a creating documents that do not become attack surfaces. The Federal Drive got an update from DARPA program manager Sergey Bratus.\nLearn more about your ad choices. Visit podcastchoices.com/adchoices