Targeted hacker attacks, such as the one believed to have caused the massive credit card security breach disclosed this month, are low tech and well understood. Nevertheless, they are extremely hard to stop, IT managers said last week.

The growing problem is compelling companies to implement defense strategies that emphasize data-level monitoring and protection mechanisms and stronger user authentication to supplement their network intrusion-detection and egress-filtering measures.

By Jaikumar Vijayan at Computerworld.

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