Halsey has told how a "powerful" music executive looked at nudes of them without consent.
The singer, who goes by she/they pronouns, told how she was "frozen" after realising what had happened.
"I had a really strange situation a couple years ago," the singer said on the Call Her Daddy podcast.
"I was out and I was with this executive, this really powerful executive who works in music in some capacity."
Halsey went on to tell how the man asked if she would take a photo with him for his niece. She did, then asked him to hold the phone.
"I took a selfie of the two of us and I handed him my phone and I was like, 'Text it to yourself. I have to pee,'" the Without Me singer recalled.
"And then I went to the bathroom and when I came back, he handed me my phone like this, (screen down). And I saw he was going through my nudes on my phone."
They continued, "I was just frozen. I was like, 'Did I just imagine that? Was that an accident? Did the phone scroll up? What the heck just happened?' And then I was like, 'Did he text them to himself and then delete the messages? I don't even know where these are now.'"
The star, who is engaged to Canadian actor and singer Avan Gogia, admitted the situation was a wake-up call.
"In that moment, I was like, 'You're nothing. You're nothing. You'll always be nothing. You're still just that f**king girl who's getting taken advantage of, or like men are talking about you behind your back, or you're some sort of like, collateral. It was so demoralising."
