Apple will be fixing MacDefender Malware with a software update in the coming days. They also provided directions on removing MacDefender from your computer. I have included the removal steps below which is easy to remove. You can also read them on Apple Support.

How to remove this malware

If the malware has been installed, we recommend the following actions:

* Do not provide your credit card information under any circumstances.
* Use the Removal Steps below.

Removal steps

* Move or close the Scan Window
* Go to the Utilities folder in the Applications folder and launch Activity Monitor
* Choose All Processes from the pop up menu in the upper right corner of the window
* Under the Process Name column, look for the name of the app and click to select it; common app * names include: MacDefender, MacSecurity or MacProtector
* Click the Quit Process button in the upper left corner of the window and select Quit
* Quit Activity Monitor application
* Open the Applications folder
* Locate the app ex. MacDefender, MacSecurity, MacProtector or other name
* Drag to Trash, and empty Trash

Malware also installs a login item in your account in System Preferences. Removal of the login item is not necessary, but you can remove it by following the steps below.

* Open System Preferences, select Accounts, then Login Items
* Select the name of the app you removed in the steps above ex. MacDefender, MacSecurity, MacProtector
* Click the minus button
* Use the steps in the “How to avoid installing this malware” section above to remove the installer from the download location.