The result of leakage, and the consequences of phishing attacks, malicious actions, the use of weak passwords and other errors in safety when working with e-mail with part of the users themselves. It is therefore recommended as a preventive measure to change the passwords on your email inbox, even if it does not use the services yandex.mail, mail.ru or gmail.
If you wan to check whether you’re among the victimized 5 million or not , then click here. They have developed special algorithm to check the batch of email-id’s which got compromised.