<![CDATA[Abstract Protecting information including multimedia documents is a major requirement in the era of information disclosure as it is currently. One way to overcome the above situation is to use steganography techniques. Steganography is the science and art of inserting secret messages in other messages so that the existence of the secret message cannot be known. To implement steganography using the Randked Positional Weight method by modifying the least significant bit or the last bit in one byte of data by using MP3 files as a storage medium. The results showed that the application was 100% successful in inserting and recalling messages that had been inserted. The result of message extraction has a message character compatibility level of 100% to the original message content. The size of the Mp3 after inserting a message is 100% the same as the size of the original Mp3. Mp3 files from steganography have very good quality above 50dB. However, steganography with the RPW method is not resistant to compression attacks that will cause the contents of the message in the Mp3 file to be lost.]]>
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