>Why MS does not feature VFP DATABASE Security?

Because it's a file-based database system. Actually, you can lock down a VFP database pretty well, but you'll have to do it from a network administration standpoint.

>VFP already come to v7 and does not have such feature?

The Windows Crypto APIs could possibly make this feasible in most versions of VFP.

>This may be 1 of the reason that VFP cannot treat as a very good DATABASE system like MS SQL.

Comparing a file-based DBMS to a server-based DBMS such as SQL Server (or Oracle or Sybase, for that matter) is not a fair comparison. If you need the features of SQL Server, then use SQL Server. It's not like VFP can't easily access SQL Server databases.

>Very sad about this. I don't like people say bad thing about VFP.

What bad things are they saying? That VFP is a bad front end for backend data? Or rather that the native VFP data format is unsecure? If the former, they don't know what they're talking about. If the latter, I'd ask them to give an example of any non-backend product (e. g. file-based) that doesn't have the same problems.