PPT-Access Control Matrix Chapter 2

Version 10 Computer Security Art and Science 2 nd Edition Slide 2 1 Overview Access Control Matrix Model Boolean Expression Evaluation History Protection State Transitions Commands Conditional Commands . policy configuration. Manya and . Shuai. Outline. Quick overview . of some research. Grey. Expandable Grid. SPARCLE. Reactive access control. Discussion of experimental design. Issues. Activity!. Grey. Operating System Principles. Protection. Overview. Goals of Protection . Principles of Protection. Domain of Protection . Access Matrix . Implementation of Access Matrix . Access Control. Revocation of Access Rights . m. movies. v11. …. …. …. vij. …. vnm. V[. i,j. ] = user i’s rating of movie j. n . users. Recovering latent factors in a matrix. m. movies. n . users. m. movies. x1. y1. x2. y2. ... ... …. Andrew Petukhov . Department of Computer Science. Moscow State University. petand@lvk.cs.msu.su. Contents. ‘About box’. Motivation: what is flawed access control in web apps?. Model: how do we view web application?. m. columns. v11. …. …. …. vij. …. vnm. n . rows. 2. Recovering latent factors in a matrix. K * m. n * K. x1. y1. x2. y2. ... ... …. …. xn. yn. a1. a2. ... …. am. b1. b2. …. …. bm. v11. Dr J Frost (jfrost@tiffin.kingston.sch.uk) . Last modified: . 29. th. August 2015. Introduction. A matrix (plural: matrices) is . simply an ‘array’ of numbers. , e.g.. But the power of matrices comes from being able to multiply matrices by vectors and matrices by matrices and ‘invert’ them: we can:. ORTHOGONALIZATION AND. LEAST SQUARES. -Mohammed. BEST GROUP. CONTENTS. Householder and Givens Transformations. The QR Factorization. The Full-Rank Least Squares Problem. Other Orthogonal Factorizations. 1/30/2017. Introduction to Computer Security © 2004 Matt Bishop . 1. Introduction. 1/30/2017. Introduction to Computer Security © 2004 Matt Bishop . 2. Chapter 1. Objectives. of Access Control. C. modified from slides of . Lawrie. Brown. Access Control. ITU-T Recommendation X.800 definition: . “The prevention of unauthorized use of a resource, including the prevention of use of a resource in an unauthorized manner.”. Prof. Ravi Sandhu. Executive Director, Institute for Cyber Security. Lutcher Brown Endowed Chair in Cyber Security. University of Texas at San Antonio. Colorado State University. Fort Collins. Sept. 16, . Role Based Access Control Venkata Marella Access Control System Access control is the ability to permit or deny the use of a particular resource by a particular entity. Access control mechanisms can be used in managing physical resources, logical resources, or digital resources. Approaches of BCG Matrix. Components of BCG Matrix. Applications of BCG Matrix. Advantages of BCG Matrix . Limitations of BCG Matrix . ?. The BCG Matrix . . .. High. Low. Relative position (Market Share). Protection. Overview. Goals of Protection . Principles of Protection. Domain of Protection . Access Matrix . Implementation of Access Matrix . Access Control. Revocation of Access Rights . Capability-Based Systems . Methid. For find. Inverse. 1.5 Elementary Matrices and . a Method for Finding A. -1. Linear Algebra - Chapter 1. 3. Elementary Matrices. Definition:. An . n . x . n . matrix is called an elementary matrix if it can be obtained from the .