Security researchers on Thursday warned Web users against visiting NBC.com, saying that hackers added links to malware on the site. Google's Chrome browser and Facebook have detected the threats, and deterred users from loading the page. NBC confirmed the attack to its website, which promotes the entertainment offerings of the TV network: "We?ve identified the problem and are working to resolve it. No user information has been compromised."

Security researcher Ronald Prins of Fox-IT in the Netherlands first tweeted a warning against visiting NBC.com.

"There were two exploits links on the NBC website," one on the homepage and another further into the site, reported the HitmanPro security blog. "The exploit drops the Citadel Trojan which is used for banking fraud and cyber-espionage," said the blog.

The breach has no effect on NBC News Digital, which operates NBCNews.com, TODAY.com and other news-oriented sites.