In Kaspersky Security Center Cloud Console, click the link containing your account name, and then select Manage user account.
The My Profile window of the Kaspersky Account portal opens.
If two-step verification is disabled, enable the Two-step verification is disabled toggle switch.
In the No phone number provided window that appears, click the Confirm button.
Under Enter your phone number, specify the mobile phone number that you want to use in two-step verification, and then click the Provide phone number button.
You can use the same phone number for up to five accounts.
A 6-digit security code is sent to the specified phone number.
Under Enter the verification code that was sent to <phone number>, enter the received security code.
In the Enter your current password window that opens, specify the password of your account in Kaspersky Security Center Cloud Console, and then click the Next button.
Two-step verification is set up. Now, every time you sign in with your email address and password, or if you forget your password, you will need to enter a one-time security code that you get by SMS to the specified phone number.