■About Password Strength
The system password policy for Teachme Biz accounts is as follows.
[Available character types] Digits 0–9, uppercase letters A–Z, lowercase letters a–z, symbols
[Character count] 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 one of your own choosing.
Reference: What symbols can be used in a password? https://help.teachme.jp/hc/en-us/articles/900005509666
Reference: What are the criteria for password strength ratings of "Strong," "Medium," and "Weak"? https://help.teachme.jp/hc/en-us/articles/4401857525785
■About Two-Factor Authentication
The product does not support two-factor authentication on its own; however, since it supports SAML authentication, you can achieve this 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 periodic password change functionality. If there is a need for this, please ensure it is enforced through your organization's internal operations.
Reference: Safe Password Management
https://www.soumu.go.jp/main_sosiki/cybersecurity/kokumin/security/business/staff/06/