A cyclist rides past a Yahoo sign at the company's headquarters in Sunnyvale, Calif. Photo: Marcio Jose Sanchez / AP

Yahoo's 2013 data breach affected all of its 3 billion user accounts — not just the 1 billion accounts as was initially disclosed in 2016, Verizon disclosed today.

  • Why it matters: Hacks are not always going to be clear-cut at first disclosure, a reminder to be cautious of first accounts of breaches.
  • The big picture: Earlier this year the U.S. Department of Justice charged two Russian spies and two hackers hired by Russians for the breach, marking this an important example of the U.S. government's willingness to hold foreign powers accountable for hacking.

More details:

  • Information affected by the breach included usernames, passwords, and sometimes telephone numbers and dates of birth.
  • This was already the biggest hack in terms of number of users, WSJ reports, and this new disclosure just raises that ceiling further.
  • The company said it found the wider scope of the breach during its integration with Verizon.

Go deeper

Democrats' mail voting pivot

Illustration: Sarah Grillo/Axios

Democrats spent the early months of the coronavirus pandemic urging their base to vote absentee. But as threats of U.S. Postal Service delays, Team Trump litigation and higher ballot rejection rates become clearer, many are pivoting to promote more in-person voting as well.

Why it matters: Democrats are exponentially more likely to vote by mail than Republicans this year — and if enough mail-in ballots are lost, rejected on a technicality or undercounted, it could change the outcome of the presidential election or other key races.

New interactive tool shows Biden's mail voting danger

Data: SurveyMonkey; Chart: Danielle Alberti/Axios

Voters who disapprove of President Trump most strongly are by far the most likely to vote by mail in the presidential election, according to an Axios analysis of exclusive data from SurveyMonkey and Tableau.

Why it matters: The new data shows just how strongly the mail-in vote is likely to favor Joe Biden — with potentially enormous implications in the swing states due to the greater risk of rejection with mail ballots.

Caitlin Owens, author of Vitals
48 mins ago - Health

Reopening the ACA debate is politically risky for GOP

Data: Kaiser Family Foundation, The Cook Political Report; Notes: Those losing insurance includes 2020 ACA marketplace enrollment and 2019 Medicaid expansion enrollment among newly-eligible enrollees. Close races are those defined as "Toss up" or "Lean R/D"; Table: Andrew Witherspoon/Axios

The sudden uncertainty surrounding the future of the Affordable Care Act could be an enormous political liability for Republicans in key states come November.

Between the lines: Millions of people in crucial presidential and Senate battlegrounds would lose their health care coverage if the Supreme Court strikes down the law, as the Trump administration is urging it to.

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