Verizon Says All 3 Billion Yahoo Accounts Were Compromised in 2013 Attack

Yahoo's massive data breach that occurred in August of 2013 affected all three billion Yahoo accounts that existed at the time, Yahoo parent company Verizon disclosed today in a statement on Oath.com, the website for the brand that now encompasses both AOL and Yahoo.

Previously, Yahoo said the hack affected 1 billion accounts, or a third of all accounts at the time. Verizon now says new intelligence suggests the attack was much larger, compromising all Yahoo accounts in 2013.

yahoo

Subsequent to Yahoo's acquisition by Verizon, and during integration, the company recently obtained new intelligence and now believes, following an investigation with the assistance of outside forensic experts, that all Yahoo user accounts were affected by the August 2013 theft.

Information stolen from affected accounts included names, email addresses, telephone numbers, birth dates, hashed passwords, and both encrypted and unencrypted security questions and answers. Clear text passwords, bank account information, and credit/debit card information are not believed to have been accessed in the attack.

In a statement, Verizon says the Yahoo team is continuing to take significant steps to enhance security.

"Verizon is committed to the highest standards of accountability and transparency, and we proactively work to ensure the safety and security of our users and networks in an evolving landscape of online threats," said Chandra McMahon, Chief Information Security Officer, Verizon. "Our investment in Yahoo is allowing that team to continue to take significant steps to enhance their security, as well as benefit from Verizon's experience and resources."

Yahoo initially uncovered the attack after law enforcement officials provided the company with Yahoo user data from an unknown source. Yahoo notified users it believed were affected in 2016 at the time the attack was disclosed, but the company will now send email notifications to additional user accounts affected by the hack.

Along with the attack in 2013, Yahoo saw another data breach in 2014 that compromised 500 million accounts, and a third major breach targeting accounts between 2015 and 2016.

The security breaches affected Verizon's $4.48 billion June acquisition of Yahoo, leading Yahoo to drop its asking price by $350 million.

Yahoo is already under SEC investigation for not disclosing the data breach sooner and affected victims have been given the right to sue the company.

Tag: Yahoo

Top Rated Comments

catportal Avatar
41 months ago
*whistling while Marissa Mayor floats away in her golden parachute*
Score: 32 Votes (Like | Disagree)
IPPlanMan Avatar
41 months ago
Rule #1: They’re always lying

This was intentionally slow-walked to get past the acquisition.
[doublepost=1507065797][/doublepost]

*whistling while Marissa Mayor floats away in her golden parachute*

I’ll bet she knew the whole time. Disgraceful.

She needs to be called before Congress:

https://judiciary.house.gov/subcomm...ourts-intellectual-property-and-the-internet/ ('https://judiciary.house.gov/subcommittee/subcommittee-on-courts-intellectual-property-and-the-internet/')

Drop these Members on the Committee a line and get her put in the hot seat.
Score: 25 Votes (Like | Disagree)
Goldfrapp Avatar
41 months ago
What's more shocking is that Y actually had 3 billion accounts
Score: 16 Votes (Like | Disagree)
Mike MA Avatar
41 months ago
How Yahoo handles the issue is the far bigger scandal.
Score: 13 Votes (Like | Disagree)
The Cappy Avatar
41 months ago

I believe there was a study some time ago showing the average intelligence and income of Yahoo users was lower than that of the other main competitors.

Published alongside the study that showed that people like to make crap up on the internet? Yeah. I think I remember it.
Score: 11 Votes (Like | Disagree)
akfgpuppet Avatar
41 months ago
It was just easier to say that all accounts were compromised.
Score: 8 Votes (Like | Disagree)

Top Stories

0 Deals Hero

Black Friday 2020: Best Apple Deals to Plan For

Saturday November 21, 2020 10:00 am PST by
In the lead-up to Black Friday next week, we've been putting a spotlight on the best deals coming from various retailers like Best Buy and Walmart. In an effort to further prepare our readers for the best Black Friday deals, we're breaking down what we think should be on your radar for Black Friday in 2020. Note: MacRumors is an affiliate partner with some of these vendors. When you click a...
m1 mac mini vignette

Apple Lists M1-Based Mac Mini Logic Boards With 10 Gigabit Ethernet in Internal Parts Ordering System

Friday November 20, 2020 9:32 am PST by
While the new Mac mini with the M1 chip is only available with Gigabit Ethernet, Apple has listed multiple M1-based Mac mini logic boards with 10 Gigabit Ethernet in an internal parts list for Apple Authorized Service Providers. For every Mac mini logic board with Gigabit Ethernet in the parts list, obtained by MacRumors, there is a corresponding logic board with 10 Gigabit Ethernet:...
new m1 chip

Craig Federighi: Native Windows on M1 Macs is 'Really up to Microsoft'

Friday November 20, 2020 11:57 am PST by
Following the release of the M1 Macs Apple executives have been doing interviews with a range of publications, and today, Ars Technica published another interview with software engineering chief Craig Federighi, hardware technologies lead Johny Srouji, and marketing VP Greg Joswiak. Much of the interview focuses on topics that the three have already covered in prior discussions, but there is ...
14

Apple Releases iOS 14.2.1 With Fix for Text Message Bug and iPhone 12 Mini Lock Screen Issues

Thursday November 19, 2020 10:16 am PST by
Apple today released iOS 14.2.1, a bug fix update that comes two weeks after the launch of iOS 14.2 and is available for Apple's new iPhone 12 models. The iOS 14.2.1 update can be downloaded for free and it is available on all eligible devices over-the-air in the Settings app. To access the new software, go to Settings > General > Software Update. According to Apple's release notes, iOS...
Walmart November Deals Hero

Black Friday Spotlight: Walmart Will Have AirPods Pro Down to Lowest Price of $169, and More Apple Deals

Thursday November 19, 2020 8:05 am PST by
We've been tracking early Black Friday deals in our dedicated Black Friday Roundup, and in an effort to prepare our readers for the big shopping event we're highlighting sales store-by-store in the lead-up to November 27. Note: MacRumors is an affiliate partner with Walmart. When you click a link and make a purchase, we may receive a small payment, which helps us keep the site running. Next ...
apple leather sleeve

Leather Sleeve for iPhone 12 Models Now Available From Apple

Friday November 20, 2020 12:16 pm PST by
Apple today began selling the Leather Sleeve for the new iPhone 12 models, with the accessory having first been announced alongside the updated iPhones in October. Priced at $129, the Leather Sleeve is not a case and is designed to be removed when the iPhone is in use. It features a cutout at the front that displays the time, and it comes with a matching leather strap. According to Apple, it ...
iOS14AntitrackFacebookSadfeature

Apple Confirms Commitment to App Tracking Transparency in Letter Condemning Facebook's Data Collection [Updated]

Thursday November 19, 2020 11:58 am PST by
Apple in iOS 14 is planning to introduce a new App Tracking Transparency feature that will let users know when companies want to track them across apps and website. Following outcry from developers like Facebook and ad networks unprepared for the change, Apple delayed the implementation of the anti-tracking functionality until early 2021. Eight civil society organizations recently sent a...
maxresdefault

CrossOver Allows x86 Windows Apps to Run on Apple M1 Macs

Wednesday November 18, 2020 6:07 pm PST by
Codeweavers posted a blog post and video tonight showing off CrossOver running on an Apple M1 MacBook Air. This video shows Team Fortress 2 running on a new M1 MacBook Air: CrossOver is software (based on Wine Project) that runs Microsoft Windows apps on the Mac by translating Windows APIs into their Mac equivalents. The Codeweavers team was able to run the current version of CrossOver on...
macbookpro13large

Apple Offers Instructions on What to Do if macOS Big Sur Causes Installation Errors on 2013 and 2014 MacBook Pro

Thursday November 19, 2020 6:12 pm PST by
Following the release of macOS Big Sur last week, a number of 2013 and 2014 MacBook Pro owners found that the update bricked their machines. Affected users saw their Macs get stuck displaying a black screen after attempting to install the new software. Apple has now addressed this issue in a new support document that provides instructions on what to do if macOS Big Sur can't be installed on...
128gb m1 macbook air education cropped

$799 M1 MacBook Air With 128GB Storage for Education Institutions Spotted Online

Friday November 20, 2020 5:15 am PST by
A new configuration of the M1 MacBook Air with 128GB of storage and a lower $799 price has today been spotted on Apple's U.S. Education Institution Hardware and Software Price List. The M1 MacBook Air is only available with 256GB, 512GB, 1TB, or 2TB of storage. There is currently no 128GB configuration on the Apple Store. However, Reddit user "u/dduci97" noticed that Apple has listed...