Yahoo chief Marissa Mayer (Magnus Höij / Flickr Creative Commons)

Two Republican senators, including the chair of the chamber's Commerce Committee, aren't pleased with Yahoo's response to their inquiries about a pair of massive data breaches that exposed the company's users.

"Despite several inquiries by Committee staff seeking information about the security of Yahoo! user accounts, company officials have thus far been unable to provide answers to many basic questions about the reported breaches," said Sen. John Thune and Sen. Jerry Moran in a letter to CEO Marissa Mayer, adding that "Yahoo!'s recent, last-minute cancellation of a planned congressional staff briefing ... has prompted concerns about the company's willingness to deal with Congress with complete candor about these recent events."

Key context: The senators want information related to two different data breaches, one that occurred in 2013 and affected more than a billion users and another in 2014 that hit 500 million users.

What's next: The senators have asked for answers to their questions by February 23. "We're in receipt of the letter, reviewing it and will respond as appropriate," said a spokesperson for the company in an email.

The bigger picture: Questions about the data breaches and whether Yahoo appropriately disclosed them have roiled its proposed combination with Verizon.

Go deeper

Updated 2 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Aïda Amer/Axios

  1. Global: Total confirmed cases as of 9 p.m. ET: 20,755,406 — Total deaths: 752,225— Total recoveries: 12,917,934Map.
  2. U.S.: Total confirmed cases as of 9 p.m. ET: 5,246,760 — Total deaths: 167,052 — Total recoveries: 1,774,648 — Total tests: 64,831,306Map.
  3. Politics: House Democrats to investigate scientist leading "Operation Warp Speed" vaccine projectMcConnell announces Senate will not hold votes until Sept. 8 unless stimulus deal is reached.
  4. 2020: Biden calls for 3-month national mask mandateBiden and Harris to receive coronavirus briefings 4 times a week.
  5. States: Georgia Gov. Brian Kemp to drop lawsuit over Atlanta's mask mandate.
  6. Business: Why the CARES Act makes 2020 the best year for companies to lose money.
  7. Public health: Fauci's guidance on pre-vaccine coronavirus treatments Cases are falling, but don't get too comfortable.

Trump says he intends to give RNC speech on White House lawn

President Trump speaking to reporters on South Lawn in July. Photo: Jabin Botsford/The Washington Post via Getty Images

President Trump told the New York Post on Thursday that he plans to deliver his Republican National Convention speech from the White House lawn, despite bipartisan criticism of the optics and legality of the location.

Why it matters: Previous presidents avoided blurring staged campaign-style events — like party conventions — with official business of governing on the White House premises, per Politico.

Fauci's guidance on pre-vaccine coronavirus treatments

Illustration: Aïda Amer/Axios

Antibody drugs and various medicine cocktails against the coronavirus are progressing and may provide some relief before vaccines.

The big picture: Everyone wants to know how and when they can return to "normal" life, as vaccines are not expected to be ready for most Americans for at least a year. Two therapies are known to be helpful, and more could be announced by late September, NIAID Director Anthony Fauci tells Axios.