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Machine learning software that detects anomalous use of APIs helped a real estate company reinforce its API security as it conducts more transactions on the web.

Houwzer Inc., a real estate brokerage, title and mortgage services firm in Philadelphia, is a relatively small company with 150 employees, but it has conducted $1 billion in real estate transactions since it was founded in 2015. For the last three years, it has begun to perform more of these transactions through a set of APIs hosted on AWS, which initially focused on real estate listings but began to include sales to home buyers in 2020.