Both of those operating systems run many services by default and offer them to anyone who cares to look. Users generally aren't able to secure machines and so this responsibility often falls to the vendor.Mac OS X and Windows both encourage users to download programs from the Internet without any thought for security. "It's possible to have a well-secured machine regardless of operating system. So you are much less likely to be bothered by malware if you use a Mac, or run Linux on your PC." They would far rather attack Windows PCs as there are lots more of them. Malware writers are rational, as are botnet herders. So while preventing normal crime is about sociology, preventing online crime is about economics. The bulk of e-crime is done by technically sophisticated people living in poor countries like Russia, India, or Brazil. The bulk of normal crime-burglaries, muggings, car thefts-is done by disadvantaged young men, often illiterate and with drug and alcohol problems. "Computer criminals differ from ordinary criminals in that they're more rational. Ross Anderson, professor of security engineering at the Computer Laboratory at University of Cambridge:
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