Personal data is easier to get than ever. Reproductive health workers are at risk.

Originally published by The 19th. Subscribe to its daily newsletter.

Companies called data brokers are lightly regulated, making the danger of doxxing — where contact information is made public to facilitate harassment — overwhelming.

In November, a study revealed how easily foreign governments could use companies known as data brokers to purchase personal information about U.S. military personnel. In some cases researchers paid less than a quarter per record for information that included home addresses...