An increasing number of high-profile figures -- from Vice President Joe Biden to Beyonce and Jay-Z -- are coming forward to admit they may have been hacked.
Authorities are trying to determine whether the information posted online is authentic and, if so, who did it.
"We will vigorously pursue those who have made me a victim and made a number other people in the public eye victims," LAPD Chief Charlie Beck said.
What are the real threats for cyber security? Paul Rosenzweig, visiting fellow at the Heritage Foundation, has more following this report on CBN Newswatch, March 13.
The website in question, which appears to originate in Russia, also posted the Social Security number and credit report of first lady Michelle Obama.
In an exclusive interview with ABC News, President Obama would not say if the information posted about the first lady is authentic.
"We should not be surprised that if we've got hackers that want to dig in and have a lot of resources, that they can access people's private information. It is a big problem," the president told ABC News.
"Again, not confirming that's what happened," he continued. "You've got websites out there right now that sell peoples credit cards that have been stolen."
Law enforcement officials are trying to determine how much of the information on the website is authentic and how it might have been obtained. But that's a tall order.
"It's a very difficult endeavor," Chief Beck said. "Many of these sites are not within the boundaries of the United States."
Cybercrime and cyber warfare have become a huge problem, and the Defense Department is establishing a series of cyber teams to protect the nation from a steady stream of attacks, many of them emanating from China.