Illustration: Lazaro Gamio/Axios

Callisto, a non-profit that provides sexual assault reporting software to college campuses, is expanding to Silicon Valley this summer, it announced on stage during Y Combinator's Demo Day on Tuesday.

Why it matters: After last year's wave of reported sexual harassment and assault accounts, it's not a surprise the organization is tackling the tech industry. Callisto's system hinges on a powerful concept: information escrow. In the case of Callisto, this means that an incident report triggers the involvement of a counselor only if or when at least one other victim reports the same perpetrator.

How it'll work: In the Silicon Valley version, victims will submit a timestamped report of the incident confidentially. Once there's a match of victims with the same perpetrator, a Callisto counselor will review the cases and discuss with the victims their options, which can vary from reporting to law enforcement to going to the press.

  • At least at first, Callisto's counselors will be attorneys, an approach that will allow the victims' information and discussions to be covered by attorney-client privilege in the event of legal action.

Initial support: So far, Callisto has received donations from a handful of VC firms, including Greylock Partners, First Round, Data Collective, Obvious Ventures, and Uncork Capital.

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Biden releases 2019 tax returns ahead of debate

Photo: Alex Wong/Getty Images

Joe Biden's campaign released his 2019 tax returns on Tuesday, showing that he and his wife, Jill, paid nearly $300,000 in federal taxes last year.

Why it matters: The release, timed just hours before the first presidential debate, comes days after a bombshell New York Times report said that President Trump paid only $750 in federal taxes in 2016 and 2017. Biden's team is hoping to make the tax contrast a sticking point during their showdown.

Updated 1 hour ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 2:15 p.m. ET: 33,454,037 — Total deaths: 1,003,571 — Total recoveries: 23,204,219Map.
  2. U.S.: Total confirmed cases as of 2:15 p.m. ET: 7,165,067 — Total deaths: 205,476 — Total recoveries: 2,794,608 — Total tests: 102,342,416Map.
  3. Health: Americans won't take Trump's word on the vaccine, Axios-Ipsos poll finds.
  4. States: NYC's coronavirus positivity rate spikes to highest since June.
  5. Sports: Tennessee Titans close facility amid NFL's first coronavirus outbreak.
  6. World: U.K. beats previous record for new coronavirus cases.

NYC's coronavirus positivity rate spikes to highest since June

New York Mayor Bill de Blasio. Photo: Noam Galai/Getty Images

New York City's coronavirus positivity rate has ticked up to 3.25%, its highest since June, Mayor Bill de Blasio said at a news conference on Tuesday.

Why it matters: The jump — from 1.93% on Monday — came on the first day that public elementary classrooms reopened in the city after months of closures, but guidelines state that all public schools will have to shut if the citywide seven-day positivity rate stays above 3%.