A newly revealed Al Qaeda video calls on followers to launch cyberattacks on Western targets, a message called “alarming” by U.S. lawmakers in light of the increase in such attacks last year. …

The six-minute video instructs Al Qaeda followers that the U.S. is vulnerable to cyberattacks in the same way airline security was vulnerable in 2001 before the terrorist attacks of Sept. 11. The video calls on Muslims “with expertise in this domain to target the websites and information systems of big companies and government agencies.” …

Without getting into classified information, Lieberman confirmed that there has been a spike in cyber intrusions — believed to originate with Iran.