Al Qaeda may be turning its destructive attention to cyber-warfare against the United States. In a chilling video, an al Qaeda operative calls for “electronic jihad” against the United States, and compares vulnerabilities in vital American computer networks to the flaws in aviation security before the 9/11 attack.

The al Qaeda video calls upon the “covert mujahidin” to launch cyber attacks against the U.S. networks of both government and critical infrastructure, including the electric grid. The video was obtained by the FBI last year, and released today by the Senate Committee on Homeland Security and Governmental Affairs.

“This is the clearest evidence we’ve seen that al Qaeda and other terrorist groups want to attack the cyber systems of our critical infrastructure,” Homeland Security and Governmental Affairs Committee Chairman Joe Lieberman, I-Conn., said in a statement.

“This video is troubling as it urges al Qaeda adherents to launch a cyber attack on America,” said Sen. Susan Collins, R-Maine, the ranking member on the committee. “It’s clear that al Qaeda is exploring all means to do us harm and this is evidence that our critical infrastructure is a target.”

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