LulzSec, the group that was responsible for the recent security breaches at Sony and PBS, said Monday that it hacked the U.S. Senate's main Web site. During that breach, LulzSec hackers were able to obtain a configuration file for the senate's main Web site, which they subsequently posed on their own Web site. The material in the configuration file suggests that the LulzSec hackers were not able to access sensitive information during the breach.

The hackers were also not able to access the senate's computer network, according to a spokeswoman for the senate. Meanwhile, LulzSec also said Monday that it breached a Web site operated by software maker Bethesda Softworks. The company has said that its network was breached and that hackers were able to obtain some usernames, e-mail addresses and/or passwords, but that no personal financial information or credit-card data was stolen.