On January 13, 2023, an unprecedented data breach occurred affecting millions of Mail.ru users. Unknown hackers published the personal information of 3.5 million individuals in the public domain.

The leaked user list database includes 3,505,918 rows of information:
ID in the system;
last name and first name of the user;
user’s nickname;
phone number (1,647,711 unique numbers);
email address (3,412,253 unique addresses) at mail.ru, bk.ru, inbox.ru and list.ru domains, including 199 addresses at corp.mail.ru domain.

Leaked Data: The leaked data includes a database with a list of users and their personal information such as ID in the system, full name, nickname, phone number, and email addresses on various domains including mail.ru, bk.ru, inbox.ru, and list.ru. Experts from DLBI service exposed that the data dump contains registered phone numbers and email addresses that match with the information in the dump, exposing millions of users to potential identity thefts, phishing scams, and other malicious activities.
Protect Yourself: To protect themselves, Mail.ru users are advised to take immediate action such as changing their passwords for any accounts associated with the email addresses and phone numbers found in the leaked data, and to be vigilant of phishing attempts and suspicious activity on their accounts.
Mail.ru’s Statement: Mail.ru has issued a statement saying that they are investigating the incident and working to secure their systems to prevent similar breaches in the future. They also advise their users to be cautious of any unsolicited emails or messages and to report any suspicious activity.
Conclusion: The data breach at Mail.ru highlights the importance of data security and the need for individuals to take steps to protect their personal information. Users should be proactive in monitoring their accounts and be aware of potential threats. In the meantime, Mail.ru is working to resolve the issue and secure their systems to prevent future breaches. However, it’s important to be aware that this kind of incidents can happen and to be always prepared. Therefore, it’s highly recommended to follow the steps mentioned above in order to protect your personal information. Moreover, it’s worth to mention that the use of a strong and unique password for each account is a must. In conclusion, data breaches are a serious concern that can have serious consequences for individuals whose personal information is exposed, so it’s important to take action to protect yourself.