Daniel A. Ray

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—A digital chain of custody is an account documenting digital data at a particular place and time. This paper gives a method of validating and authenticating a digital chain of custody using an algorithm by Jakobsson and by providing a new algorithm that compliments Jakobsson's algorithm. Our method assumes specialized hardware. The physical hardware is(More)
Power distribution systems typically have tie and sectionalizing switches whose states determine the topological configuration of the network. The system configuration affects the efficiency with which the power supplied by the substation is transferred to the load. Power companies are interested in finding the most efficient configuration, the one which(More)
This paper describes a proof-of-concept system for detecting insider threats. The system measures insider behavior by observing a user's processes and threads, information about user mode and kernel mode time, network interface statistics, etc. The system is built using Mi-crosoft's Windows Management Instrumentation (WMI) implementation of the Web Based(More)
This paper gives an online algorithm for generating Jakobsson's fractal hash chains [14]. Our new algorithm compliments Jakobsson's fractal hash chain algorithm for preimage traversal since his algorithm assumes the entire hash chain is precomputed and a particular list of ⌈log n⌉ hash elements or pebbles are saved. Our online algorithm for hash chain(More)
This paper reports the results of our experimentation with modeling worm behavior on a large scale, fully adaptable network simu-lator. Our experiments focused on areas of worm scanning methods, IP address structure, and wireless links that, to the best of our knowledge, have been mostly neglected or abstracted away in prior worm simulations. Namely, our(More)
For elucidation of thyroid hormone-induced responsiveness of fish brain, various doses (0.012, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2 and 4 ?g/g) of triiodothyronine (T(3)) were injected in Singi fish, Heteropneustes fossilis (Bloch), for 3 consecutive days and the changes in cytosolic NADP-dependent malic enzyme (ME, EC 1.1.1.40) activity in whole brain tissue(More)
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