@Vinicius Eduardo welcome to the community! as far as access, you can restrict who can view a board's contents. You can either make it public, workplace visible, or private and only people you specifically add will have access. So if you make a board private and then only add folks you want to view it, you wont have to worry about anyone else having access to it.
Re: backups, check up the backups for trello power-up!
Hello @Vinicius Eduardo
I wanted to reach out and inform you that FluentPro, the company I'm part of, has a solution for an automated Trello backup. FluentPro Backup is a cloud platform that creates data backups continuously and allows you to restore lost or corrupted data automatically. Using FluentPro Backup, you can eliminate risks connected with human errors and data loss.
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