A number of cyber-attacks at JPMorgan Chase on Tuesday left many bank customers unable to access their internet banking accounts, though no customer data had been compromised and the bank’s ATM, telephone and mobile networks remained intact.
Chase was the latest target in a wave of denial-of-service attacks, which overwhelm online systems with fake requests to prevent their use by legitimate customers, Los Angeles Times reports.
Izz ad-Din al-Qassam Cyber Fighters, a group based in the Middle East, has been attacking American banks periodically since September, saying the attacks are retaliation for an American-made video that mocks the Muslim prophet Muhammad.
The group threatened to attack American banks on Tuesdays, Wednesdays and Thursdays “because of widespread and organized offends to Islamic spirituals and holy issues,” adding that it would end the attacks if the video was removed from the Internet, according to Los Angeles Times.
Within 24 hours ending at 7:40 p.m. PST on Tuesday, more than 200 reports of issues related to Chase’s online banking website had been posted to sitedown.co, which allows Internet users to report crashes of corporate websites.
Over the past month, the site revealed that customers had logged more than 900 reports of Chase website crashes, compared to 453 at AT&T, 415 at Netflix, 351 at Bank of America and 107 at Wells Fargo, Los Angeles Times reports.