TY - BOOK AU - Johnson Neil F AU - Duric Zoran AU - Jajodia Sushil TI - Information hiding: Steganography and watermaking-attacks and countermeasures SN - 0-7923-7204-2 U1 - 005.8 PY - 2001/// CY - Boston PB - Kluwer Academic KW - Computer security KW - Data protection ER -