Decoy Document Deployment for Effective Masquerade Attack Detection

• Published in: Detection of Intrusions and Malware, and Vulnerability Assessment pp. 35 - 54
• Main Authors: Ben Salem, Malek, Stolfo, Salvatore J.
• Format: Book Chapter
• Language: English
• Published: Berlin, Heidelberg Springer Berlin Heidelberg 2011
• Series: Lecture Notes in Computer Science
• Subjects: Attack Detection; High False Positive Rate; Legitimate User; Malicious Activity; User Study
• ISBN: 3642224237; 9783642224232
• ISSN: 0302-9743; 1611-3349
• DOI: 10.1007/978-3-642-22424-9_3

Masquerade attacks pose a grave security problem that is a consequence of identity theft. Detecting masqueraders is very hard. Prior work has focused on profiling legitimate user behavior and detecting deviations from that normal behavior that could potentially signal an ongoing masquerade attack. Such approaches suffer from high false positive rates. Other work investigated the use of trap-based mechanisms as a means for detecting insider attacks in general. In this paper, we investigate the use of such trap-based mechanisms for the detection of masquerade attacks. We evaluate the desirable properties of decoys deployed within a user’s file space for detection. We investigate the trade-offs between these properties through two user studies, and propose recommendations for effective masquerade detection using decoy documents based on findings from our user studies.