Even that also, about 60 percent of the login details was valid which effects users Gmail account, G+ and other google products. Apart from this leaks, another leaks were published online which contains the login details of popular Russian website, Yandex and Mail.ru .
In the response to the above Google leaks, Automattic, which maintain and operates the hosted blogging service WordPress.com have took a pre-emptive steps for the security of its users. Automattic has reset 100,000 accounts passwords for the security purpose.
As Google leaks details was no way concerns with the WordPress products or service but company found that a bunch of emails that were used in WordPress Blog were also found in the list of leaked database. Company found that user, uses email address for registration on WordPress.com have the same password of their Gmail account and with WordPress.com .
So for this security purpose, Automattic had reset 100,000 accounts. Automattic says-
“We also sent email notification of the password reset containing instructions for regaining access to the account,”
Users who are affected were asked to hit the Login button on the homepage and request a new password.
Using the same password across multiple online account is really a bad practice. I have discussed some of the tips for online security, you can check and follow it. Apart from it, we recommend to enable extra security features to your accounts. As there are many sites who provides some extra security for users accounts like - Two-factor Authentication.