na INLIS000000000010125 20220831094448 0010-0118000090 220831 0 ind 978-979-29-1792-5 005.8 005.8 Ibi k Ibisa Keamanan Sistem Informasi / Ibisa Ed.I Yogyakarta : Andi, 2011. 180 hlm,; xii, : ill ; 23 cm. Computer Security 1800146 1800147