WASHINGTON Dec 15 A senior Democratic senator
on Thursday said he intended to investigate Yahoo's cyber
security practices after the company announced it had uncovered
another massive data breach dating to August 2013 that affected
more than 1 billion user accounts.
The haul of data is the largest on record and appears to be
separate from a 2014 attack the beleaguered internet company
disclosed earlier, Yahoo said Wednesday.
"This most recent revelation warrants a separate follow-up
and I plan to press the company on why its cyber defenses have
been so weak as to have compromised over a billion users,"
Senator Mark Warner of Virginia said in a statement to Reuters.
Warner, who will become the top Democrat on the Senate
Intelligence Committee next year, described the hacks as "deeply
troubling." He said he had repeatedly asked Yahoo for briefings
about the 2014 hack, which affected 500 million accounts, but
had not received a response.
After the 2014 hack, which was disclosed in September,
Warner asked the U.S. Securities and Exchange Commission to
investigate whether Yahoo had fulfilled obligations to inform
investors and the public about it.
"If a breach occurs, consumers should not be first learning
of it three years later," Warner said on Thursday. "Prompt
notification enables users to potentially limit the harm of a
breach of this kind, particularly when it may have exposed
authentication information such as security question answers
they may have used on other sites."
In a statement Wednesday, Yahoo said the billion stolen user
account credentials may have included names, email addresses,
telephone numbers, dates of birth, hashed passwords and, in some
cases, encrypted or unencrypted security questions and answers.
Verizon Communication Inc said in October that it
might withdraw from an agreement to buy Yahoo's core internet
business for $4.83 billion. Following news of the latest hack,
Verizon said it would "review the impact of this new development
before reaching any final conclusions."
(Reporting by Dustin Volz in Washington; Additional reporting
by Jim Finkle in Boston; Editing by Bill Trott)