Planned Parenthood confirmed that its online databases have been hacked, potentially exposing employees' personal information.
The women's health and abortion provider said Monday it has reported the crime to the Department of Justice and the FBI.
"Extremists who oppose Planned Parenthood's mission and services have launched an attack on our information systems, and have called on the world's most sophisticated hackers to assist them in breaching our systems and threatening the privacy and safety of our staff members," said Planned Parenthood Executive Vice President Dawn Laguens Monday afternoon.
"We are working with top leaders in this field to manage these attacks," she said. "We treat matters of safety and security with the utmost importance, and are taking every measure possible to mitigate these criminal efforts to undermine our mission and services."
A group of hackers who oppose the group for its abortion services is taking credit for the hack, first sharing it with the Daily Dot. One of the hackers, identified only as "E," said it will be "interesting to see what surfaces when [Planned Parenthood] is stripped naked and exposed to the public."
"Trying to mold an atrocious monstrosity into socially acceptable behaviors is repulsive," the hacker told the Daily Dot. "Obviously what [Planned Parenthood] does is a very ominous practice."
The online attack comes as Planned Parenthood is under congressional investigation for a series of undercover videos showing top officials discussing compensation for donating aborted fetal body parts for medical research.
Planned Parenthood has apologized for how its medical director appeared to discuss the practice, but says it has done nothing illegal.