Several Web sites belonging to NBC were recently defaced, including the home page for Saturday Night Live.

"The hacker, who called himself 'Pyknic,' replaced the Web sites with a simple page displaying scrolling text saying, 'Remember, remember the fifth of November. The gunpowder treason and plot. I know of no reason why the gunpowder treason should ever be forgot,'" writes ZDNet's Steven J. Vaughan-Nichols.

"The message also indicated that 'user info' and 'passwords' had been exposed, but it was unclear where this information was allegedly taken from," writes CNET News' Steven Musil.

"The affected domains include NBC’s main site, Saturday Night Live, and the NBC Sports Rotoworld forums (forums.rotoworld.com). ... Some of the affected sites have been restored, but others have been taken down altogether," writes Softpedia's Eduard Kovacs. "In addition, NBC has temporarily disabled user logins."

"Needless to say, if you had an account on NBC.com, now might be a good time to change your password -- just in case," writes Hollywood.com's Alicia Lutes.

"The Anonymous hacking collective had warned that it planned to carry out attacks Guy Fawkes' Night, but had threatened Facebook and Zynga -- currently both still fine -- rather than NBC," writes TG Daily's Emma Woollacott. "It's not clear whether Pyknic is a member of Anonymous."

"This isn’t the first time NBC has been targeted by hackers," notes The Inquisitr's Todd Rigney. "In September of 2011, the Federal Bureau of Investigation began searching for the individuals responsible for posting fake news to the official NBC News Twitter account."