NEW YORK (NewsNation) — Duke University researchers purchased sensitive information about U.S. military service members, as part of a report, from online data brokers for as little as 12 cents per page, shedding light on the unregulated data broker industry which, while legal, possesses a political national security threat.

It’s taking place online, with seemingly no effective means to stop it.

Data brokers are actively collecting and selling information concerning both active duty and retired American service members. This information includes sensitive details such as home addresses, Social Security numbers and medical histories.