It sounds like one of those annoying chain emails that show up from technically challenged acquaintances: “The FBI Will Take Your Computer Offline July 9 If It Has A Virus! Visit This Site Immediately To Check!! Forward This To Everyone You Know!!!”
But the Federal Bureau of Investigation really has posted a warning on its site about the risk of “DNSChanger” malware, which really will result in your computer getting disconnected from the Web on July 9 if you don’t clean it up. You won’t be able to go online, and you’ll need to contact your service service provider for help getting the malware deleted before you can reconnect to the Internet.