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More Efficient Security for Cloud-Based Machine Learning

Combination of encryption techniques protects private data without slowing neural networks

Rob Matheson
Wed, 09/05/2018 - 12:01
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A novel encryption method devised by MIT researchers secures data used in online neural networks, without dramatically slowing their runtimes. This approach holds promise for using cloud-based neural networks for medical-image analysis and other applications that use sensitive data.

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Outsourcing machine learning is a rising trend in industry. Major tech firms have launched cloud platforms that conduct computation-heavy tasks, such as, say, running data through a convolutional neural network (CNN) for image classification. Resource-strapped small businesses and other users can upload data to those services for a fee and get back results in several hours.

But what if there are leaks of private data? In recent years, researchers have explored various secure-computation techniques to protect such sensitive data. But those methods have performance drawbacks that make neural network evaluation (i.e., testing and validating) sluggish—sometimes as much as million times slower—limiting their wider adoption.

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