Lehtinen, Rick. Computer security basics / Rick Lehtinen, Deborah Russell and G.T. Gangemi, Sr. - 2nd ed. - Sebastopol, CA : O'Reilly, c2006. - xii, 296 p. : ill. ; 24 cm. Rev. ed. of: Computer security basics / Deborah Russell and G.T. Gangemi, Sr. c1991. ISBN: 9780596006693 (pbk.) 0596006691 (pbk.) Subjects--Topical Terms: Computer security. Dewey Class. No.: 005.8 / LEH 2006