Title :
Data Hiding in SIM/USIM Cards: A Steganographic Approach
Author :
Savoldi, Antonio ; Gubian, Paolo
Author_Institution :
Dept. of Electron. for Autom., Brescia Univ.
Abstract :
The aim of this paper is twofold. First, the real structure of a SIM/USIM card file system will be presented, analyzing what is valuable from a forensics perspective and showing what evidence is not detectable and extractable with the tools present in the arena of open-source and proprietary software. After that, the paper will focus on a framework that can be used to detect and extract the so-called nonstandard part of a SIM/USIM file system, which is a concealed part usable also to store arbitrary and sensitive information. As a pro of-of-concept, an interesting example will be presented on the methods usable to obtain the data hiding in an ordinary SIM/USIM card
Keywords :
cryptography; data encapsulation; file organisation; memory cards; SIM card file system; USIM card file system; data hiding; steganographic approach; Automation; Data encapsulation; Data mining; Data security; EPROM; Forensics; Information technology; Open source software; Software tools; Steganography; SIM/USIM card; data hiding; filesystem; imaging tool;
Conference_Titel :
Systematic Approaches to Digital Forensic Engineering, 2007. SADFE 2007. Second International Workshop on
Conference_Location :
Bell Harbor, WA
Print_ISBN :
0-7695-2808-2
Electronic_ISBN :
0-7695-2808-2
DOI :
10.1109/SADFE.2007.7
