Jim Cramer Blog

The government warned on Thursday of a possible Internet attack on U.S. stock market and banking Web sites from a radical Muslim group, but officials said the threat was unconfirmed and seemed to pose no immediate danger.
The notice was issued to the U.S. cybersecurity industry after officials saw a posting on a "Jihadist Web site" calling for an attack on U.S. Internet-based stock market and banking sites in December, said Homeland Security Department spokesman Russ Knocke.
There is no information corroborating the threat, Knocke said, adding that the alert was issued "as a routine matter and out of an abundance of caution. There is no immediate threat to our homeland at this time."
Another government official said the threat had appeared on a Web site that called for Muslims to destroy American economic sites. The attacks were to be retaliation for the holding of Muslims at the U.S. prison at Guantanamo Bay, Cuba, which houses prisoners accused of ties to terrorist groups.
The attacks were to be conducted in December, "until the infidel new year," the site said, according to a U.S. government translation. It called for attackers to use viruses that can penetrate Internet sites and destroy data stored there.