Russian internet and search organization Yandex declared on Friday that one of its system administrators had enabled unapproved access to a huge number of client mailboxes. The organization found the breach internally, during a standard check of its security team. The investigation uncovered that the employee’s activities prompted the compromise of almost 5,000 Yandex email inboxes. This employee was one of three system administrators, who had the access privileges to offer technical support for mailboxes, said Yandex.
“A thorough internal investigation of the incident is under way, and Yandex will be making changes to administrative access procedures,” said Yandex’s Friday security advisory. “This will help minimize the potential for individuals to compromise the security of user data in future. The company has also contacted law enforcement.”