The underweb grows ever more slimy, Microsoft says, as downloads of
pirated movies, music, software and other media increasingly come
bearing malware.

In the latest edition of the Microsoft Security Intelligence Report
[PDF], released on Monday, the company tackles unsafe supply chains,
which it describes as "the websites, protocols, and other channels by
which software and media files are informally distributed, both legally
and illegally."

The definition covers underground sites where pirated software and media
are openly exchanged, as well as legitimate websites that make shareware
or free music files available for public download.

In fact, unsafe supply chains encompass even computers sold at retail.

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