Roles, permissions and data security

Document level of detail, ownership, dependencies and freshness. Verify rights to underlying objects and measure gain before materializing.

Giving owner rights to an application increases the impact of an error or injection. Analysts, applications and administrators do not have the same needs.

Create loginless group roles, grant permissions to schemas and objects, and then assign these roles to login identities. Remove unnecessary public rights and set default privileges.

Really test with SET ROLE or a dedicated connection: read allowed, write denied and no out-of-scope access. Table rights do not always override USAGE on schema or sequences.

Test a valid insert and then each violation separately. Give meaningful names to important constraints so that the error is exploitable.

Grant read, deny write, and check actual privileges.

Apply the principle of least privilege to a laboratory table. You must produce the result, check it on the source data and explain what it allows you to decide in this billing system.

Apply the principle of least privilege to a laboratory table. You must produce the result, check it on the source data and explain what it allows you to decide in this national expeditions.

Apply the principle of least privilege to a laboratory table. You must produce the result, control it on the source data and explain what it allows you to decide in this human resources management.

Apply the principle of least privilege to a laboratory table. You must produce the result, check it on the source data and explain what it allows you to decide in this audit log.

Check the nature and definition of the objects, not just a few rows returned.

Centralize a definition of active data without copying the query. You must produce the result, check it on the source data and explain what it allows you to decide in this audit log.