[Birth and death process of computer viruses].
The daily variations in the number of computer viruses found attaching to e-mails and the number of accesses to the home page of a national institute in Japan are examined. The power spectral densities (PSD) of the variation in the computer viruses show a time-correlation characteristic of Markov process, but the daily access number does not (identified as white noise). Like biological viruses, the variation in the computer viruses can be described by the birth-and-death model known as a Markov process.
Segawa
Katsunori
K
fumi@nihs.go.jp
Nakano
Tatsuya
T
Nakata
Kotoko
K
Hayashi
Yuzuru
Y
D016494:Computer Security / Q000706:statistics & numerical data*; D007564:Japan / Q000453:epidemiology; D008390:Markov Chains; D013997:Time Factors