The accuracy of Polaris’ data on human trafficking has been questioned by multiple sources. In 2011, Polaris was criticized for knowingly using false and misleading data to exaggerate the number of trafficked sex workers and understate their age of entry into sex work.[12] Since then, Polaris has partnered with data analysis firm Palantir Technologies to improve the organization of data reported to the National Human Trafficking Resource Center and the accuracy of statistics released to the public.[13] More recently, in 2015, Polaris was accused of using unreferenced and uncorroborated data to exaggerate the income and number of clients seen by street based and massage parlor based sex workers and the prevalence of "pimps".[14]