rosalie gillett: in my research, the women described receiving this message, but they didn't actually address that problem. avani: rosalie gillett from the queensland university of technology spent years researching women's safety on tinder. she says the company's failure to respond to reports of sexual assault is creating an online environment that further enables perpetrators. rosalie: this is really quite significant, because it tells those women who have made their reports that they're actually not justified, and that they weren't serious enough to actually warrant a report, and that's also really dangerous because it tells users who are engaging in that harassing and abusive behavior that it is acceptable, and they don't need to change anything on that platform. ♪♪♪ ♪♪♪ beth: i essentially started using it to meet people for casual sex, 'cause it was private, and it was to myself, and i could choose who i liked the look of or liked the sound of. initially, it was very much just the ego boost, you know. just, like, seeing who would match with you and who found you maybe attractive