Alltech Consulting Services, a New Jersey-based tech staffing firm, left a database unprotected, leaving the personal information of about 216,000 job seekers exposed, a security researcher said.vasare/ Getty ImagesA tech recruiting firm left the personal information of roughly 216,000 people exposed, a researcher said.The information included partial Social Security numbers, email addresses, and visa statuses.It's unclear if any unauthorized parties accessed the exposed data.An IT researcher found that the unsecured files from a tech recruiter's database included personally identifying information of an estimated 216,000 job seekers — including data like names, phone numbers, passport numbers, visa information, and partial Social Security numbers.Jeremiah Fowler, the security researcher who co-founded the consulting firm Security Discovery, said he didn't know how long the data had been exposed but told Business Insider that the database was soon locked once he contacted the recruiter in September.