Get Your Shields Up!
Posted by
George V. Hulme
October 11, 2004
Though many companies now use antivirus software, intrusion-detection systems, and firewalls, hackers and worms still infiltrate business-technology systems and cause serious damage. Attacks such as Blaster, MyDoom, and Witty cost businesses more than $10 billion annually.
To combat the growing problem, security professionals are in search of better protection. They need more-intelligent shields that can fend off new attacks as they happen, rather than relying on signatures--tiny snapshots of code used to spot and block attacks--published by security vendors only after attacks are under way.
Intrusion-prevention systems may be the protection companies are looking for. Unlike conventional antivirus, firewall, and intrusion-detection systems, these proactive tools are designed to protect vulnerable computers and thwart unforeseen attack methods.
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New intrusion-prevention systems are better able to stop attacks, Michael Assante, VP and chief security officer of American Electric Power says. | |
That's important, especially since attacks are getting too fast for reactive security tools. Consider this: When the SQL Slammer worm hit the Internet in January 2003, it attacked a 6-month-old vulnerability in Microsoft SQL Server. But in March of this year, the Witty worm struck a buffer-overflow vulnerability only one day after the flaw was found in various Internet Security System Inc. products. Security professionals are even more concerned about so-called "zero-day" attacks, those against software vulnerabilities that have no patches or defensive signatures because they haven't yet been publicly disclosed.
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