Hello,
Welcome to the Community! I really appreciate that you are taking security seriously!
It is not possible to turn off data logging by default for new scenarios.
This setting applies to each scenario individually.
Make treats security with the highest importance and this setting really means a no-log policy, so enabling it by default would make creating scenarios extremely difficult for users.
If you set Data is confidential to yes - Make will not store anything related to your logs and business data.
Keep in mind that this will make debugging of the scenario very limited.
To enable this setting, click on Scenario setting (gear icon) and set Data is confidental to Yes.
To contact support directly please use this URL: https://www.make.com/en/ticket
It is available also in your account:
If you are looking for enhanced security of your Make account- you should take Enterprise plan under consideration.
To discuss details contact Make directly or you can talk to any official Make.com partners.
I remain at your disposal if needed.
Best regards,
Michal