Bookbot

Helmut Petritsch

    Network virtualisation
    Break-glass
    • Break-glass

      Handling Exceptional Situations in Access Control

      Helmut Petritsch describes the first holistic approach to Break-Glass which covers the whole life-cycle: from access control modeling (pre-access), to logging the security-relevant system state during Break-Glass accesses (at-access), and the automated analysis of Break-Glass accesses (post-access). Break-Glass allows users to override security restrictions in exceptional situations. While several Break-Glass models specific to given access control models have already been discussed in research (e. g., extending RBAC with Break-Glass), the author introduces a generic Break-Glass model. The presented model is generic both in the sense that it allows to model existing Break-Glass approaches and that it is independent of the underlying access control model.

      Break-glass
    • Could dynamic Malware analysis be more dynamic by assigning network calls an injected result, defined by the analysis process? Yes, but only if the network access was completely virtualised. This book explains how this virtualisation could be achieved. It starts with an instruction of dynamic Malware analysis and the usage of sockets in the Windows operating system. By using Qemu and TTAnalyze (a tool for dynamic Malware analysis), it describes how network access could be virtualised, so that system calls relating to sockets (and therefore accessing the network) are intercepted at the system call gate, then manipulated and imitated for a dynamic analysis. The book also defines the most important synchronisation techniques of multi-threaded applications for their (network) activities. The reader will gain a thorough understanding, of how high level functions of the Winsock library are executed with the aim of system calls.

      Network virtualisation