The DB admin may have created these keys. Data encryption is the key to data security. With SQL Server 2005 you can secure your data by using the encryption or decryption functions that it provides.

DbEncrypt allows you to apply column-level encryption in your SQL Server database and assign view permissions to different users. Whether for obscuring credit card numbers, social security numbers ...

DbEncrypt for SQL Server 2.1, which will be unveiled this week, takes far fewer round trips between its encryption engine and a SQL Server database, resulting in a fivefold-to-tenfold performance ...