Introduction: Ignore This Book at Your Own Peril!

As I started to write this introduction, a disturbing statistic arrived in my inbox. Security software maker F-Secure reported that the total number of viruses and Trojans will hit one million by 2009.

One million viruses! That’s astounding. Now for the good news: The reason so many are being written is that it’s become more difficult for these infections to succeed in infecting systems. That’s because security practices have been improved. Computer owners are more educated. Security software is increasingly effective. We are simply more savvy about computer security. And that’s great!

In response, the bad guys are shifting their strategies and using new tools to make their malware more effective ...

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