■ About Password Strength
The system password policy for Teachme Biz accounts is as follows.
[Allowed character types] Numbers 0–9, uppercase letters A–Z, lowercase letters a–z, symbols
[Length] Between 8 and 64 characters
[Other] Must not be identical to the account name; password strength must be "Medium" or higher
Please note that the password policy cannot be changed to a custom policy of your choice.
Reference:
What symbols can be used in a password?
https://help.teachme.jp/hc/en-us/articles/900005509666
What are the criteria for password strength ratings of "Strong," "Medium," and "Weak"?
https://help.teachme.jp/hc/en-us/articles/4401857525785
■ About Multi-Factor Authentication
The product does not support multi-factor authentication on its own; however, since it supports SAML authentication, it can be achieved indirectly by configuring single sign-on.
Please refer to the link below for details.
Reference:
Setting Up Single Sign-On
https://teachme.jp/8/manuals/11468504/
■ About Periodic Password Changes
In accordance with the Ministry of Internal Affairs and Communications' security guidelines, we do not provide a feature for periodic password changes. If this is a requirement, please ensure thorough internal practices within your organization.
Reference:
Secure Password Management
https://www.soumu.go.jp/main_sosiki/cybersecurity/kokumin/security/business/staff/06/