ATLANTA — A leading online security firm has reported they have seen a 161% increase in the number of hacker attacks they are blocking on the retail client's Web sites.

The firm SecureWorks said during the first six months of 2008, attacks on their protected sites averaged 56,000 per month but the number has jumped to 133,000 per month during the latter six months.

The numbers represent attack activity for 36 major retailers across the U.S., the firm said.

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"We saw a large increase in hackers looking for open ports, as well as those trying to identify the applications and other services our retail clients were running," said Wayne Haber, director of architecture for SecureWorks. "An increase in network scans is often a red flag because many times it is followed by attacks specifically targeted at the organization's services," said Haber."

"Attempted network scans against our retail clients increased 61% in 2008 going from an average of 56,000 per client per month in the first six months of the year to 90,000 per client per month in the last five months of the year," Haber added.

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