ThetaRay, another new company in the field, uses big data to spot the first signs of cyber attacks, allowing banks and critical infrastructure companies such as power plants to protect themselves before attacks progress too far. “There is a convergence between cyber security and fraud,” says Mark Gazit, ThetaRay’s chief executive. “Cyber security in banks is not just about stealing credit card numbers — it’s about breaking into the system and stealing real money.” ThetaRay counts several leading banks among its customers. In December it signed a deal with PwC to help the consultancy and its clients detect anomalies in their business data that might signal threats.

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