Bank technology stocks are taking a beating as the broader market slides.Verisign Inc., which issues and manages digital certificates, closed Friday at $97.8125 down 62% from its high of $258.50, which it reached March 1. HNC Software Inc., a credit card fraud-prevention specialist, closed at $48.875, down from a high of $127.75, on March 10.

Despite S1 Corp.'s blue-chip customer base of 650 financial institutions, including 40 of the world's 100 largest banks, it has been caught in the downdraft, too. Its stock closed Friday at $46.98 down from its high of $142.25, on Feb. 16.

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