Callisto is a nonprofit US organization project, created by Jessica Ladd, aimed at allowing individuals to anonymously report sexual assault. The organization has developed a suite of online tools, Callisto Vault, that allow users to submit a time-stamped record of the alleged offense, and if another individual files a report about the same perpetrator will, according to a 2018 report, alert the authorities. According to a 2022 report a match triggers only emails to two lawyers, each with the contact details of one survivor but not naming the alleged perpetrator; the lawyers then contact the survivors to inform them of the match and offer assistance for any action they wish to take. Callisto Vault is available, to individuals, by campus invitation only, and offered only in the US. The site uses a third party encryption software to flag the reports of the victims. Since its release, Callisto has received criticism for its policies towards reporting to authorities and over concerns of its database being hacked. Callisto was originally created in 2011 as Sexual Health Innovations (SHI), to which it was later renamed in 2018 to Callisto. Process When users report alleged assaults, they have the opportunity to be in an environment they feel comfortable in. The reporters are encouraged to take breaks so that they do not become overwhelmed. The report does not have to be in chronological order. No one will be able to access the report, unless the filer grants access. Once the report has been submitted, there are three outcomes. The system will notify the authorities as well as the college, only if two victims report the same assailant. The reporter may forward the record to the school. If the victim chooses, they may take the report to the authorities. Security Callisto uses modern techniques that allow data to be shared without those sharing revealing any personal information to each other; the same techniques permit two banks to find whether they are being defrauded by the same person, without either bank breaking data protection laws. Techniques of this sort are referred to as Privacy-enhancing technologies (PETs). Reception Callisto is considered a tool in helping to reduce sexual assault. Other methods for reducing this crime include an online sexual assault course that colleges require students to take, apps that students can download to tell them local crime hot spots and more. Most colleges have “blue light poles” in