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In attesa di un software di aggiornamento per Mac OS X, Cupertino fornisce le istruzioni utili a evitare o rimuovere manualmente MacDefender e le varianti conosciute.macdefender virus rimuoverlo soluzione assistenza
MacDefender si spaccia per un programma di analisi antivirale della macchina.
Molte delle vittime vengono indotte a credere si tratti di un aggiornamento ufficiale contro le infezioni. In realtà, avviando MacDefender, il computer viene letteralmente infestato da pop-up pubblicitari e pagine di siti pornografici.
Sarà disponibile nei prossimi giorni un software di aggiornamento per Mac OS X in grado di rintracciare e rimuovere automaticamente MacDefender e le sue varianti conosciute fino a ora. L'update fornirà delle informazioni ulteriori per aiutare i Mac user a riconoscere il virus ed evitare, così, di scaricarlo.

Per qualsiasi necessià, contattaci, siamo a vostra disposizione per la rimozione dello stesso.

Articolo originale Apple:

How to avoid or remove Mac Defender malware

  • Last Modified: May 24, 2011
  • Article: HT4650

Summary

A recent phishing scam has targeted Mac users by redirecting them from legitimate websites to fake websites which tell them that their computer is infected with a virus.

The user is then offered Mac Defender "anti-virus" software to solve the issue.

This “anti-virus” software is malware (i.e. malicious software). 

Its ultimate goal is to get the user's credit card information which may be used for fraudulent purposes.

The most common names for this malware are MacDefender, MacProtector and MacSecurity. 

In the coming days, Apple will deliver a Mac OS X software update that will automatically find and remove Mac Defender malware and its known variants. 

The update will also help protect users by providing an explicit warning if they download this malware. 

In the meantime, the Resolution section below provides step-by-step instructions on how to avoid or manually remove this malware.

Products Affected

Mac OS X 10.4, Mac OS X 10.6, Mac OS X 10.5

Resolution

How to avoid installing this malware

If any notifications about viruses or security software appear, quit Safari or any other browser that you are using. If a normal attempt at quitting the browser doesn’t work, then Force Quit the browser.

In some cases, your browser may automatically download and launch the installer for this malicious software.  If this happens, cancel the installation process; do not enter your administrator password.  Delete the installer immediately using the steps below.

  1. Go into the Downloads folder or your preferred download location.
  2. Drag the installer to the Trash. 
  3. Empty the Trash.

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.

Note: Apple provides security updates for the Mac exclusively through Software Update and the Apple Support Downloads site. User should exercise caution any time they are asked to enter sensitive personal information online.
 

Important: Information about products not manufactured by Apple is provided for information purposes only and does not constitute Apple’s recommendation or endorsement. Please contact the vendor for additional information.

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