Preface

 

HORTENSIO: Madam, before you touch the instrumentTo learn the order of my fingering,I must begin with rudiments of artTo teach you gamouth in a briefer sort,More pleasant, pithy and effectual,Than hath been taught by any of my trade;And there it is in writing, fairly drawn.

 
 --The Taming of the Shrew, III, i, 62–68.

On September 11, 2001, terrorists seized control of four airplanes. Three were flown into buildings, and a fourth crashed, with catastrophic loss of life. In the aftermath, the security and reliability of many aspects of society drew renewed scrutiny. One of these aspects was the widespread use of computers and their interconnecting networks.

The issue is not new. In 1988, approximately 5,000 computers throughout the Internet ...

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