Yahoo Warns Users of Third Data Breach As Verizon Closes in on Revised Deal

Yahoo has issued a new warning to account holders about malicious hacks linked to a third data breach that the company disclosed late last year.

The warning relates to more recent malicious activity targeting accounts between 2015 and 2016, most likely perpetrated by a "state actor", according to Yahoo. Specifically, the hacks are said to have been achieved by using "forged" cookies – the text-based keys that give web users access to username and password information without having to re-enter it – created by software stolen from within Yahoo's internal systems.

A message was sent to affected Yahoo users on Wednesday, warning them of the unauthorized access to their account, but Yahoo did not reveal how many people were notified.

yahoo again

Yahoo's announcement came just hours after reports that Verizon was close to a renegotiated deal to buy Yahoo's core assets at a lower price. Last year, Verizon agreed to buy Yahoo’s core business for $4.83 billion, but on Wednesday Bloomberg reported that the renegotiated deal would slash about $250 million off that price because of the security breaches that were revealed after the initial deal was agreed. 

"As we have previously disclosed, our outside forensic experts have been investigating the creation of forged cookies that could have enabled an intruder to access our users' accounts without a password," a Yahoo spokesperson told Associated Press. "The investigation has identified user accounts for which we believe forged cookies were taken or used. Yahoo is in the process of notifying all potentially affected account holders. Yahoo has invalidated the forged cookies so they cannot be used again."

Back in September, Yahoo revealed that hackers had stolen the personal data of "at least" 500 million users, but by December, the internet company admitted that over one billion Yahoo user accounts had been compromised in a separate hack dating back to August 2013. Information stolen included names, email addresses, phone numbers, birth dates, hashed passwords, security questions and answers.

The internet company is currently under investigation from the Securities and Exchange Commission over its failure to disclose its massive data breaches sooner.

Tag: Yahoo

Top Rated Comments

btrach144 Avatar
55 months ago
We don't need Yahoo anymore. They just need to die along with Adobe Flash.
Score: 14 Votes (Like | Disagree)
symphara Avatar
55 months ago
It boggles the mind that this company is worth anything, nevermind 4 billion.
Score: 10 Votes (Like | Disagree)
maflynn Avatar
55 months ago
Verizon would be foolish to close this deal, revised or not. There's no many problems with Yahoo now, and clearly the hacking problems are material enough for them to walk away. I never got why Verizon wanted to buy them in the first place.
Score: 10 Votes (Like | Disagree)
Brian Y Avatar
55 months ago
Seriously? Forged cookies? What is this, 1998?
Score: 9 Votes (Like | Disagree)
keysofanxiety Avatar
55 months ago
This would be bordering on comical if it wasn't so tragic.
Score: 7 Votes (Like | Disagree)
MysteriousStain Avatar
55 months ago
Ya Who?
Score: 7 Votes (Like | Disagree)

Top Stories

april 2021 event coverage feature

Apple Event Live Coverage: New iPads, AirTags, and More Expected [Event Over]

Tuesday April 20, 2021 9:07 am PDT by
Apple's virtual "Spring Loaded" event kicks off today at 10:00 a.m. Pacific Time, with Apple expected to debut updated iPad models and perhaps some other hardware such as AirTags or iMac models based on Apple silicon. Apple is providing a live video stream on its website, on YouTube, and in the company's TV app across its platforms. We will also be updating this article with live blog...
m1 imac colors

Apple Announces Redesigned iMac With M1 Chip and Seven Color Options

Tuesday April 20, 2021 10:22 am PDT by
Apple has announced a new, redesigned 24-inch iMac, featuring an M1 chip, a 4.5K display, and a range of color options, as well as an improved cooling system, front-facing camera, speaker system, microphones, power connector, and peripherals. The new iMac features a completely new compact design, and comes in a range of seven striking colors, including green, yellow, orange, pink, purple,...
Ports 2021 MacBook Pro Mockup Feature 1 copy

Stolen MacBook Pro Schematics Confirm Apple's Plans to Add More Ports and Remove Touch Bar

Wednesday April 21, 2021 10:31 am PDT by
Schematics stolen from Apple supplier Quanta Computer outline Apple's plans for the next-generation MacBook Pro models that are expected in 2021, and clearly confirm plans for additional ports and a return to MagSafe. MacRumors saw the schematics after they were leaked online, and some of them feature the logic board of the next-generation MacBook Pro. On the right side of the machine,...
iphone 12 preorder purple

Apple Launching iPhone 12 and 12 Mini in New Purple Color on April 30

Tuesday April 20, 2021 10:08 am PDT by
Apple today announced that the iPhone 12 and iPhone 12 mini will be available in a new purple color starting April 30, with pre-orders starting this Friday. Apple is also releasing a new MagSafe Leather Case and Leather Sleeve in Deep Violet, a Silicone Case in Capri Blue, Pistachio, Cantaloupe, or Amethyst, and a Leather Wallet in Arizona, all available to order beginning today. iPhone...
13 inch macbook pro m1

14-Inch and 16-Inch MacBook Pro Models With XDR Displays Expected to Launch Later This Year

Wednesday April 21, 2021 7:08 am PDT by
Apple yesterday unveiled a new 12.9-inch iPad Pro with a Liquid Retina XDR display that uses mini-LED backlighting to achieve up to 1,000 nits of full-screen brightness and up to 1,600 nits of peak brightness. With over 10,000 mini‑LEDs grouped into more than 2,500 local dimming zones, the display also has an impressive 1,000,000:1 contrast ratio. Apple has so far branded its mini-LED...
14

Apple Says iOS 14.5 Will Be Released 'Next Week'

Tuesday April 20, 2021 11:08 am PDT by
Apple today in a press release about its new AirTag item tracker announced that iOS 14.5 and iPadOS 14.5 will be available starting "next week." iOS 14.5 and iPadOS 14.5 are packed with new features, including the ability for iPhone users who are wearing an Apple Watch to unlock the iPhone with Face ID while wearing a mask. iOS 14.5 and iPadOS 14.5 will also be the minimum software versions...
ipad pro with m1 chip

Apple Introduces Next-Generation iPad Pro With M1 Chip, Thunderbolt, 5G, XDR Display, and More

Tuesday April 20, 2021 10:40 am PDT by
Apple today announced the next-generation iPad Pro with the same M1 chip found in the latest Macs, Thunderbolt and USB4 support, 5G connectivity on cellular models with mmWave support in the United States, and more. With an 8-core CPU and 8-core GPU, Apple says the M1 chip in the new iPad Pro provides up to 50% faster performance and up to 40% faster graphics compared to the A12Z Bionic chip ...
f1618938547

Apple Announces AirTag Tracking Devices Starting At $29 Each

Tuesday April 20, 2021 10:10 am PDT by
Apple today announced AirTag, a Tile-like Bluetooth tracking device that's designed to be attached to items like keys and wallets for tracking purposes, letting you find them right in the Find My app. AirTags are accessories for attaching to backpacks, luggage, and other items. Any U1 device like the iPhone 12 can be used for precision finding to guide you right to the item you're looking...
airtag engraving 69

Apple Tries to Limit Offensive AirTag Engravings... With Mixed Results

Wednesday April 21, 2021 3:16 am PDT by
Apple's AirTag item trackers can be custom-engraved using text, numbers, and even emoji, but users looking to express some college humor will likely need to look elsewhere, because Apple's online AirTag personalization tool is easily offended. An AirTag is just big enough to fit up to four characters or up to three emoji. That might seem just enough to get dubiously creative with your...
maxresdefault

Apple Event 2021: Everything Apple Announced at Its 'Spring Loaded' Event in Just 6 Minutes

Tuesday April 20, 2021 4:23 pm PDT by
Apple today held its first event of 2021, and it was one of the most exciting events that we've seen in some time. Apple announced a whole slew of new products, including an M1 iMac, an M1 iPad Pro, a refreshed 4K Apple TV, and the long-awaited AirTags. Subscribe to the MacRumors YouTube channel for more videos. It took Apple an hour to introduce all of the new devices during its virtual...