Yahoo confirmed on Thursday that the account information for at least 500 million users was stolen by hackers in 2014, in the biggest known intrusion of one company’s computer network.
“The account information may have included names, email addresses, telephone numbers, dates of birth, hashed passwords (the vast majority with bcrypt) and, in some cases, encrypted or unencrypted security questions and answers,” Yahoo said in a statement.
This is one of the biggest data breaches in the history of the internet.
Yahoo has advised to its users to reset their passwords and they will be secured again. If you have not changed your password since 2014 there are chances your login details are available somewhere online after this data theft.
According to a Gartner survey, 50% people reuse their passwords on different platforms and if your Yahoo account’s password is leaked, there are chances you may lose your other accounts associated with that password.
Some hackers were found selling Yahoo account credentials on the different social media platform.
Yahoo said they are working closely with law enforcement agencies to investigate this issue in detail.
“This is massive,” said online security expert Per Thorsheim on the scale of the hack. “It will cause ripples online for years to come.”
The biggest data breach could create a long-term problem for Yahoo, including damaging reputation, and losing shareholders trust. The company is already trying to survive in the market.