Tables in public schema

Hi,

In one of the PostgreSQL Instances, I just found out that the tables are created in the public schema even though there is a user database.

New tables are also getting created in the public schema.

There is no non-public schema when I run \dn, it only shows public.

I assume this is a risk of some sort and want to create a user schema and move them from public to the new schema.

Will I have to redo the grants?

Regards,

Ed