An investigative series I've been writing about organized cyber crime gangs stealing millions of dollars from small to mid-sized businesses has generated more than a few responses from business owners who were concerned about how best to protect themselves from this type of fraud. The simplest, most cost-effective answer I know of? Don't use Microsoft Windows when accessing your bank account online. I do not offer this recommendation lightly (and at the end of this column you'll find a link to another column wherein I explain an easy-to-use alternative). But I have interviewed dozens of victim companies that lost anywhere from $10,000 to $500,000 dollars because of a single malware infection. I have heard stories worthy of a screenplay about the myriad ways cyber crooks are evading nearly every security obstacle the banks put in their way. But regardless of the methods used by the bank or the crooks, all