Nude photos of several high-profile stars, including “Hunger Games” star Jennifer Lawrence, Kate Upton, Selena Gomez, Ariana Grande and Kirsten Dunst, leaked online Sunday in one of the biggest celebrity hacking scandals in recent memory.

The pictures first appeared on image-sharing site 4chan and show most of the celebrities nude or partially dressed and were likely stolen from cell phones or e-mail accounts.

A spokesperson for Lawrence confirmed the photos were real and blasted the hackers for their “flagrant violation of privacy.”

“The authorities have been contacted and will prosecute anyone who posts the stolen photos of Jennifer Lawrence,” her representative warned.

Mary Elizabeth Winstead, another actress exposed in the leak, immediately took to Twitter to denounce the images.

To those of you looking at photos I took with my husband years ago in the privacy of our home, hope you feel great about yourselves. — Mary E. Winstead (@M_E_Winstead) August 31, 2014

A total of 101 celebrities were purportedly hacked in the breach, although it’s unclear how many of the circulating photos were real. Actress Victoria Justice insisted that her photos were fake while other stars such as Lena Dunham rebuked the privacy infringement on Twitter.

Remember, when you look at these pictures you are violating these women again and again. It's not okay. — Lena Dunham (@lenadunham) September 1, 2014

Seriously, do not forget that the person who stole these pictures and leaked them is not a hacker: they're a sex offender. — Lena Dunham (@lenadunham) September 1, 2014

Other names on the list include Aubrey Plaza, Kim Kardashian, Vanessa Hudgens, Rihanna, Lea Michele, Hillary Duff, Cat Deeley and U.S. soccer star Hope Solo.

See More: Celebrities Targeted in Nude Photo Leak (Full List)

As the authorities try to determine how the risqué photos surfaced online, one thing is clear: entertainers have become a favorite target for hackers.

In 2012, a judge sentenced Christopher Cheney to 10 years in federal prison for stealing nude photos and personal information from the e-mail accounts of several high-profile celebrities, including Scarlett Johansson, Mila Kunis and Christina Aguilera.

“Just because you’re an actor or make films, or whatever, doesn’t mean you’re not entitled to your own personal privacy,” Johansson told CNN after the incident.

Other victims of data theft include “Mad Men” star Christina Hendricks, Blake Lively, Vanessa Hudgens, “Twilight” actress Ashley Green and Olivia Munn.