It was reported that more than 650,000 Mac OS X computers were infected by the Flashback Trojan. For now, it only conducts a click fraud scam that takes control of users’ search results in their browsers. But according to this report, it can steal banking and other login credentials.
Flashback Trojan disguises itself as a Flash installer. If you are prompted to install Flash which looks like the image below, abort the installation by clicking the X button on the upper left corner of the window.
If you want to check if your machine is infected, download the removal tool (FlashbackRemoval.zip) from F-Secure. Unzip the file after downloading and double click the unzipped script. You will be asked to accept the license agreement.
If traces of the trojan are found, it will start the clean up process. But if your system is clean, you will be prompted by this:
Apple has already released an update which has an integrated tool for removing the trojan. Always keep your Macs updated. Here’s the screenshot of the update:
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