This is horrible.

Mischa Barton held a press conference in the presence of her attorney, Lisa Bloom, on Wednesday, where the O.C. star revealed that she had been filmed during intimate moments without her knowledge or consent.

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"My absolute worst fear was realized when I learned that someone I thought I loved and trusted was filming my most intimate and private moments, without my consent, with hidden cameras," the 31-year-old actress told reporters. "And then I learned something even worse: that someone is trying to sell these videos, and make them public."

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"I came forward to fight this, not only for myself, but for all the women out there," she added. "I want to protect them from the pain and humiliation that I have had to go through."

Calling the ordeal a "horrific experience, Barton compassionately stated, "No woman should have to go through this."

"It is a very hard thing to do, but I am glad that I am finally standing up for myself," Barton concluded her statement.

Watch the press conference via the Bloom Firm's Facebook below.

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In a statement, Bloom put out a warning to anyone thinking of obtaining or sharing the illegal content.

"There is a name for this disgusting conduct: revenge pornography," the lawyer wrote in a statement, explaining that the act is "a form of sexual assault, and it is also a crime and a civil wrong in California."

"I have a message for anyone who attempts to traffic in these photos or videos of Ms. Barton: we will find you, and we will come after you. We will fully prosecute you under every available criminal and civil law," the statement continued. "You proceed at your peril."

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The upsetting news comes months after Barton was transported to a hospital following a disturbance call in her home.

Watch the video below for more.