As the U.S. Department of the Treasury has been sending cyber risk warnings to large U.S. banks, those financial institutions have seen an increase in attempted cyberattacks, The Wall Street Journal reports. Bank of America, Citigroup, JPMorgan Chase and Wells Fargo have been asked by federal officials to monitor traffic from potential hackers who are seeking to discover vulnerabilities within the banks’ networks. The Office of Critical Infrastructure Protection and Compliance Policy within the Treasury has been working with the banks to share information about cyberthreats, while government warnings have also been circulated between member banks of the Financial Services Information Sharing and Analysis Center. (Registration may be required to access this story.) 
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