Women have long used word of mouth to warn each other about sexual predators, recognizing that offenders often target more than one individual. Lately, these so-called whisper networks have moved online and out of the shadows. Organizations such as the Silent Choir Project, JDoe and Callisto offer websites and mobile apps for survivors to report sexual misconduct and connect with victims of the same perpetrator, allowing them to explore legal options and come forward together.
Callisto launched with a focus on campus sexual...