ISO/IEC 27001 security standard

Yandex Mail, Yandex Disk, Yandex Messenger, Yandex Telemost, and Yandex Calendar have a certificate of conformity to ISO/IEC 27001:2022. an international standard for information security management. It sets out requirements for the implementation, maintenance, and continuous improvement of information security processes.

According to the independent audit data, Yandex Mail, Yandex Disk, Yandex Messenger, Yandex Telemost, and Yandex Calendar meet the standard requirements. In particular:

• It anticipates potential issues and avoids them.

• It sufficiently funds the information security system, allowing it to promptly respond to new threats.

• It trains employees to work with confidential data and ensures that this knowledge is applied in practice.

• It prevents unauthorized access to data, including by employees.

• It uses reliable data protection technologies.