4 Replies Latest reply: Apr 22, 2012 6:08 PM by FunBoo
JohnMukc Level 1 (0 points)

Hi Gang,

   I received an email with a link for checking my IMac for a malware threat that affects DNS servers. The link in the email takes me to a website that checks my computer to see if it is "Green"... which means no infection, or "Red"... signaling an infection. Mine is ok...

Here is the link: 


Is there a threat to the Mac OS X operating system?  Is Apple aware of this?  Is there a report out on this?


John sends...

Macbook, Mac OS X (10.4.6)
  • Klaus1 Level 8 (47,755 points)

    If, as you show, you are only running an outdated version of Tiger, you are probably not at risk.


    You will find this User Tip on Viruses, Trojan Detection and Removal, as well as general Internet Security and Privacy, useful:





    The User Tip (which you are welcome to print out and retain for future reference) seeks to offer guidance on the main security threats and how to avoid them, including how to prevent, detect and/or remove the Flashback Trojan.

  • JohnMukc Level 1 (0 points)

    Hi Klaus1...

    Sorry if I gave you an incorrect assumption that I am running Tiger OS on my IMac... I have an Intel IMac, running the latest version of Snow Leopard... I haven't upgraded to Lion yet, since my Macbook (Intel) isn't fast enough for Lion.

    The security issue came out of an email received yesterday... Apr 21, 2012... Looks a new concern. The article forwarded to me was from the Danbury News Times paper... and was legitimate. When I visted the site in my original email... I took the test, and found my IMac is "clean."

    I removed Norton Internet Security from my IMac because Apple tech support told me it wasn't effective, and caused more problems than it was worth. I assume the periodic software updates from Apple protect us against know viruses at the time of the update... but what about in between?

    Any recent securtiy issues with Mac?

    John sends...

  • Klaus1 Level 8 (47,755 points)

    The information is contained in the link I provided, but just to reiterate:


    Flashback Trojan - Detection and Removal

    Users with Intel Macs running Snow Leopard OS 10.6 or Lion OS 10.7 should ensure that they have downloaded all the recent Java updates from Apple, which are designed to prevent infection and also remove any infection already present.

    New Macs running Lion do not have either Flash Player nor Java installed. If you running Lion and have not already downloaded and installed Java, you should download the ‘Flashback malware removal tool’ from Apple:  http://support.apple.com/kb/HT5246  (356KB) which includes the same code as the Java update that plugged a security hole which allowed the malware to automatically install itself without admin authorization.


    You can also use this to check whether you have been infected (for Intel Macs only) and remove it if required:





    Flashback Trojan - Detection, and how to remove (with caution) if you are running other browsers than Safari:



  • FunBoo Level 1 (5 points)

    so the site you send us to wants us to first download mac clean weirdness..i thought that was inane to do..