The user security can be enhanced by adding the property mz.security.user.control.enabled and setting the value to true in values.yaml before deployment.
By default, this property is set to false in Platform pod. When set to true, additional rules for passwords are applied as soon as the Platform pod is restarted.
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If you have a custom password policy that you will want to include with the default policies listed above, you can modify or add new password rules with the Platform properties that are stated in the section Enhanced User Security Platform Properties of the Platform Properties.