Override Membership account forms - Validating Sanitizing and Escaping User Data

Hi everyone,

I have decided to override the Membership account forms, specifically at this point - the account.form.php (for users to edit profile fields). Mainly to add/remove different classes on each field to suit my theme.

My question is, do I need to add any "Validating Sanitizing and Escaping User Data" to the form now that I have copied it to the theme directory?

I'm not sure if by doing this I have opened up a security hole or not, giving users more access to the database than needed.

I have not added any extra fields to the form or anything, just changed simple HTML classes.

Thanks in advance.