Stay Curious. Stay Connected.
MailNewsletters♡Donate Now
Sign up
*Password must be at least 8 characters and contain one uppercase letter, one lowercase letter, one number and one symbol.
Already have an account?
By submitting, you consent that you are at least 18 years of age and to receive information about MPR's or APMG entities' programs and offerings. The personally identifying information you provide will not be sold, shared, or used for purposes other than to communicate with you about MPR, APMG entities, and its sponsors. You may opt-out at any time clicking the unsubscribe link at the bottom of any email communication. View our Privacy Policy.
Sign in to your profile
Forgot Password?
New to MPR News?
Welcome back
to news
for you
Reset Password

Enter the username on file and we'll send you a code to reset your password.

Still require assistance or not sure what your User Name is?
Welcome back
to news
for you
Email Verification

A verification code has been emailed to

Still awaiting the code?
Associated Press

Yahoo issues new security warning to users

Yahoo
In this Nov. 5, 2014, file photo, a person walks in front of a Yahoo sign at the company's headquarters in Sunnyvale, Calif.
Marcio Jose Sanchez | AP 2014

Go Deeper.

Create an account or log in to save stories.

Log inCreate a free Account

Like this?

Thanks for liking this story! We have added it to a list of your favorite stories.

Show me!

Yahoo is warning users of potentially malicious activity on their accounts between 2015 and 2016, the latest development in the internet company's investigation of a mega-breach that exposed 1 billion users' data several years ago.

Yahoo confirmed Wednesday that it was notifying users that their accounts had potentially been compromised but declined to say how many people were affected.

In a statement, Yahoo tied some of the potential compromises to what it has described as the "state-sponsored actor" responsible for the theft of private data from more than 1 billion user accounts in 2013 and 2014. The stolen data included email addresses, birth dates and answers to security questions.

The catastrophic breach raised questions about Yahoo's security and destabilized the company's deal to sell its email service, websites and mobile applications to Verizon Communications.

The new malicious activity reported by Yahoo revolved around the use of "forged cookies" — strings of data which are used across the web and can sometimes allow people to access online accounts without re-entering their passwords.

A message sent to an Associated Press reporter earlier Wednesday said that, "based on the ongoing investigation, we believe a forged cookie may have been used in 2015 or 2016 to access your account."

Other Yahoo users also posted messages to Twitter to report receiving similar messages.