3 Authentication The act of proving that a user is who she says she is Methods Something the user knows Something the user is Something user has From Security in Computing, Fifth Edition, by Charles P Pfleeger, et al. (ISBN: 9780134085043) Copyright 2015 by Pearson Education, Inc. All rights reservedAuthentication • The act of proving that a user is who she says she is • Methods: • Something the user knows • Something the user is • Something user has 3 From Security in Computing, Fifth Edition, by Charles P. Pfleeger, et al. (ISBN: 9780134085043). Copyright 2015 by Pearson Education, Inc. All rights reserved