Cyber Attack Halts Access to Chase Site, Bank Says

JPMorgan Chase & Co. was hit with a denial-of-service cyber attack today that prevented customers from banking online through the Chase.com website, according to Michael Fusco, a company spokesman.

“We’re working to get Chase online back up to full speed,” Fusco said by telephone. He said no customer data had been affected.

A group calling itself Izz ad-Din al-Qassam Cyber Fighters took responsibility for similar attacks on U.S. banks in December, saying they were responding to a video on Google Inc.’s YouTube.com ridiculing Islam’s Prophet Muhammad. The attacks flood Internet sites with traffic, blocking access.

The group said in an online posting today it would keep up the bank attacks, listing as additional targets: Bank of America Corp., Citigroup Inc., PNC Financial Services Group Inc., Fifth Third Bancorp, Capital One Financial Corp., BB&T Corp., U.S. Bancorp and Union Bank NA.

Carl Herberger, a vice president for the network security firm Radware Ltd. In Tel-Aviv, said multiple banks were under attack. He declined to say which ones.

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