I'm still surprised by all the old computer security recommendations that so-called experts are pushing out to the masses. For example, a quarterly guidance document from a major security vendor contained the following two statements: "Don't open up file attachments from unknown people" and "Don't run unexpected executable software from Web sites you don't trust." That's great advice -- from 10 or 15 years ago. I'm surprised the document didn't include a warning about accidentally booting from floppy disks in A: drive.

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