The more important and the higher the value of data that are processed and stored in information technology, the more people try to access, break, or even use the data. Because of that the protection for data security is very essential. Techniques used to protect the data are classified into three methods, those are Attribute Keying, Compression Keying and Encryption. Those techniques are being developed regarding to the need of data security and information technology development. This paper is expected to give contribution toward security system for high confidential data.  Key words: data security, attribute keying, compression keying, encryption, information technology development
