Menu
Yahoo data breach affects at least 500 million users

Yahoo data breach affects at least 500 million users

Yahoo is blaming the breach on 'state-sponsored' hackers.

A massive breach at Yahoo compromised account details from at least 500 million users, and the company is blaming the attack on state-sponsored hackers.

Names, email addresses, telephone numbers, and hashed passwords may have been stolen as part of the hack, which occurred in late 2014, Yahoo said.

The company reported the breach on Thursday, after a stolen database from the company went on sale on the black market last month.

However, the hacker behind the sale claimed that the stolen database involved only 200 million users and was likely obtained in 2012.

It's unclear if Thursday's breach is connected. But Yahoo has been notifying affected users and asking them to change their passwords.

"We are recommending that all users who haven’t changed their passwords since 2014 do so," the company said in a statement. It's also asking that users review any suspicious activity related to their accounts.

The vast majority of the stolen passwords were hashed with the security tool bcrypt, making them more difficult to crack, Yahoo said.

But some security questions and answers from the accounts may have also been taken.

However, Yahoo's investigation suggests that no payment card data or banking details were stolen in the breach, the company added.

Yahoo has found no evidence showing that the hackers are still inside its network.

Yahoo has published an FAQ for affected users. The company is also working with law enforcement to investigate the incident.


Follow Us

Join the newsletter!

Error: Please check your email address.

Tags securityYahoocybersecuritydata breaches

Featured

Slideshows

Kiwi channel closes 2017 with After Hours

Kiwi channel closes 2017 with After Hours

The channel in New Zealand came together to celebrate the close of 2017, as the final After Hours played out in front of a bumper Auckland crowd.

Kiwi channel closes 2017 with After Hours
Meet the top performing HP partners in NZ

Meet the top performing HP partners in NZ

HP honoured leading partners across the channel at the Partner Awards 2017 in New Zealand, recognising excellence across the entire print and personal systems portfolio.

Meet the top performing HP partners in NZ
Tech industry comes together as Lexel celebrates turning 30

Tech industry comes together as Lexel celebrates turning 30

Leading figures within the technology industry across New Zealand came together to celebrate 30 years of success for Lexel Systems, at a milestone birthday occasion at St Matthews in the City.​

Tech industry comes together as Lexel celebrates turning 30
Show Comments