No security system is foolproof.
On most of today's internet security systems, if someone knows your account name and the correct answers to three security questions plus the birth date you set, they can change your password and get full access to your account. That is unless you enable extra security such as 2-step verification.
On most of today's internet security systems, if someone knows your account name and the correct answers to three security questions plus the birth date you set, they can change your password and get full access to your account. That is unless you enable extra security such as 2-step verification.