More explicit photos have shown up on the chat site 4chan, including purported images of Kim Kardashian, Vanessa Hudgens, Mary-Kate Olsen, Hayden Panettiere, Kaley Cuoco, Hope Solo and an underage Disney star, among other female celebrities.
It’s not clear how this breach went down. Researchers told TIME they believe the technique was similar to one used for the last celebrity selfie hack, in which Apple claimed a “very targeted attack on user names, passwords and security questions,” of iCloud users was to blame.
TIME reports, “The most probable cause is that hackers obtained access to photos by answering security questions to recover or reset passwords—a common tactic and the one apparently used last time.”
One problem for celebrities is that security questions often can be answered by piecing together information publicly available.
Read the rest at ThreatWatch, Nextgov’s regularly updated index of cyber breaches.