The Microsoft Malware Protection Center reports that there's a new name for an old version of fake security software (also known as rogue security software.)

Security Essentials 2011 pretends to be antivirus software from Microsoft, but instead of protecting you from malicious software it infects your computer with it. Worse, the software claims that in order to protect your computer you need to pay for this software. You are not only paying for a fraudulent service, but also turning over your sensitive personal and financial information to cybercriminals.

Microsoft Security Essentials is free software from Microsoft. We will not ask you to pay for it.

For more information and to see a screenshot of this fake software, see New Year, Same Old Rogues.