"When I learned over the weekend that hackers had planted
malware on a Nasdaq Web server, I wasn't exactly surprised. It's
the rare company that isn't owned by hackers. Even the most
well-defended organization will likely find itself under attack by
"Whether you're attacked today or tomorrow, it's important to
understand the motivation and objective of your intruders -- doing
so can help you devise an appropriate defense. Malicious hackers
can, in fact, be broken out under some broad classifications."