Following multiple high-profile attacks on US power substations last year, extremists have stepped up sharing of “online messaging and operational guidance promoting attacks against this sector,” says the DHS bulletin, which was distributed to US critical infrastructure operators on Monday.
” Some of the threats to electric infrastructure have come from people espousing racially or ethnically motivated extremist ideology “to create civil disorder and inspire further violence,” the FBI previously said in a November bulletin sent to private industry. In the months since the FBI analysis, concerns from the federal officials about the threat appear to have grown more acute.
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