According to a report by Yahoo Back in September 2016, it was revealed that more than 500 million Yahoo accounts were hacked.But now Yahoo revealed that around over 1 billion accounts have been hacked which supposedly happened as part of a breach back in August 2013.
Bob Lord who is the Chief Information Security Officer at Yahoo says that the law enforcement provided them with data that a third party claimed was a based on a Yahoo user. The data was analyzed with the help of forensic experts and it was indeed established that it originated from Yahoo. It was revealed upon further analysis that an unauthorized party, in August 2013, stole data from more than 1 billion accounts. Bob says they have still not been able to identify the intrusion associated with this theft. They believe that this incident is likely distinct from the incident which was disclosed on September 2016.
According to Bob, the stolen user account data may have included names, email addresses, telephone numbers, birth dates, hashed passwords (using MD5) and, in some cases, encrypted or unencrypted security questions and answers.Bob further explains that the unauthorized 3rd party had access to the company’s proprietary code and learned how to forge cookies. These forged cookies allowed the intruder to access users’ accounts without a password.
What steps Yahoo is taking to Protect its Users
Yahoo have taken steps to secure their accounts, including requiring the users to change their passwords. They say that they also have invalidated unencrypted security questions and answers so that they can no longer be used to access a user’s account.
Guidance by Yahoo to its users
- Visit our Safety Center page for recommendations on how to stay secure online.
- Change your passwords and security questions and answers for any other accounts on which you used the same or similar information used for your Yahoo account.
- Review all of your accounts for suspicious activity.
- Be cautious of any unsolicited communications that ask for your personal information or refer you to a web page asking for personal information.
- Avoid clicking on links or downloading attachments from suspicious emails.
- Consider using Yahoo Account Key, a simple authentication tool that eliminates the need to use a password on Yahoo altogether.
- Visit the Yahoo Security Issue FAQs page.