Every startup pitch deck includes at least one slide that asks and answers, “What’s the problem we’re solving?” For Yinglian Xie, the question was limiting. “We didn’t want to just say, here are the four or five problems we need to work on,” she said in a conversation with Signal360 co-editor in chief Stan Joosten. She launched fraud detection company DataVisor with a broader mandate: Develop software that continually learns and adapts to new technologies and new types of attacks that emerge across the fraud landscape. DataVisor, which boasts $54.5 million in funding, is leading the cybersecurity sector with an emphasis on “unsupervised machine learning,” in which the algorithm is trained to learn to spot attacks in any form, even before they are well-known. 

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