Learn how does TOTP (2FA) work
TOTP is one of 2FA (Two-factor authentication) methods and a reliable way to keep your accounts safe. Discover how it works and why it is a secure option.
Are you using the modern and secure SSL/TLS in Magento 2?
Make sure that your Magento 2 store is not vulnerable to POODLE attack. You should update your website as soon as possible if you still use TLSv1.1.