This makes one wonder: could this be the tip of the iceberg? If this is one of the spam bots that has been found, could there be others even more stealthily hidden? It would theoretically be possible to design one which works as a kernel-module root kit, invisibly integrating itself into the running Linux kernel and operating without any trace visible from the machine. (Given the Siberian connection, there are probably vast communities of ex-KGB security experts and unemployed engineering PhDs (most of whom play a mean game of chess, too) capable of coding some fiendishly sophisticated exploits, many willing to work for whoever pays in hard currency; and that's only looking at potential talent in Russia; there certainly enough highly talented programmers out there to write incredibly elaborate and sneaky exploits for the reward of one sucker in 100 million sending their credit card number; how's that for an asymmetric warfare scenario?)
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