Ladders, one of the most popular job recruitment sites in the U.S. specializing in high-end jobs, has exposed more than 13.7 million user records following a security lapse.

The New York-based company left an Amazon-hosted Elasticsearch database exposed without a password, allowing anyone to access the data. Sanyam Jain, a security researcher and a member of the GDI Foundation, a nonprofit aimed at securing exposed or leaking data, found the database and reported the findings to TechCrunch in an effort to secure the data.