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How do I get rid of viruses on my mac?

8830 Views 15 Replies Latest reply: May 11, 2013 7:24 AM by WZZZ RSS
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Lamc89 Level 1 Level 1 (0 points)
Currently Being Moderated
May 10, 2013 5:45 AM

Hi,

 

I have ran a speed test on my internet connection and it is currently at 0.48, I believe that I may have a virus in my mac. I have had a technician from my provider test the line and the speed on his laptop was 8.45.

What is the best free program that I can get? Or do I have to fork out money for an antivirus program?

 

thanks

iMac
  • Rudegar Level 6 Level 6 (18,430 points)
    Currently Being Moderated
    May 10, 2013 6:03 AM (in response to Lamc89)

    I use

    bitdefender virus scanner

    and

    virusbarrier express

    both free both from app store

  • seventy one Level 6 Level 6 (8,455 points)
    Currently Being Moderated
    May 10, 2013 6:11 AM (in response to Rudegar)

    I do not think you have a virus.   Most people here think Apple is virus free (and I agree) ... but.

    If you are doubtful and go checking for anti-virus protction, the best you can get is Sophos and / or ClamXav, the latter being free.

     

    Warning.   Do not download or have anything to do with MacKeeper or anything from Zeobit.

  • rkaufmann87 Level 8 Level 8 (40,505 points)
    Currently Being Moderated
    May 10, 2013 6:11 AM (in response to Lamc89)

    Considering there are zero viruses for OS X it's a waste of time and money and resources. There are a few trojans but they are 1000% different than viruses.  Almost alll the antivirus applications for OS X tend to create more problems than they solve which is why I recommend no antivirus software. However if you must ONLY install ClamXav which is free, kept up-to-date and unobtrusive. I'd also recommend educating  yourself by reading articles such as Thomas Reed's Mac Malware Guide, don't read articles from the antivirus vendors they're only trying to sell their products.

  • Rudegar Level 6 Level 6 (18,430 points)
    Currently Being Moderated
    May 10, 2013 6:38 AM (in response to rkaufmann87)

    agree many people see software crash's and or bugs or periodic hardware defects as

    1. virus / trojan /malware

    2. they are being hacked

  • WZZZ Level 6 Level 6 (11,875 points)
    Currently Being Moderated
    May 10, 2013 6:58 AM (in response to Lamc89)

    It's almost certainly not a virus (aka malware.)

     

    First thing to try is to make a new location in Sys Prefs>Accounts. See BDAqua's instructions for doing this

     

    https://discussions.apple.com/message/21873611#21873611

     

    If that doesn't help, this may be a DNS server issue. Test with OpenDNS, Level3.net or GoogleDNS to see which of these improves the speed.

     

    In Sys Prefs>Network>Advanced>DNS enter these numbers above any others that may be there and hit Apply.

     

    For OpenDNS

     

    208.67.222.222

    208.67.222.220

     

    For Level3

     

    4.2.2.1

    4.2.2.2

     

    For GoogleDNS

     

    8.8.4.4

    8.8.8.8

  • WZZZ Level 6 Level 6 (11,875 points)
    Currently Being Moderated
    May 11, 2013 5:25 AM (in response to Lamc89)

    Are you using WI-FI? If you are, option-click on the Airport icon. What is the Transmit Rate showing there?

     

    To enter new DNS numbers (Sys Prefs>Network>Advanced) click on the + button. You will get a new field in blue, as shown in the screenshot below. Enter one number there, then hit OK. You will be brought back to the main tab. Hit Apply. Go back to Advanced and repeat for the second number, then hit OK. You will be brought back to the main page and hit Apply again. You can reorder the way the numbers appear by dragging them. Not absolutely certain of this, but the numbers first listed will be the DNS servers used first; second will be contacted next. If you put all those numbers in (all three sets), you can then test which servers are the fastest for you by rearranging the list order.

     

    DNS (Domain Name Server) is like the phone book. It translates names into telephone numbers. You can't dial a name. DNS servers translate site names into numbers. Some servers are better/faster than others.

     

     

    Also be sure to turn off IPv6 in TCP/IP

     

    To check that OpenDNS is working, go to http://www.opendns.com/welcome/

     

    Screen shot 2013-05-11 at 8.01.52 AM.png

     

    Message was edited by: WZZZ

  • WZZZ Level 6 Level 6 (11,875 points)
    Currently Being Moderated
    May 11, 2013 5:43 AM (in response to WZZZ)

    Also, before even trying the above, open Network Utility in Utilities and go to the Ping tab and enter google.com and hit the Ping button. Can you paste in the results.

  • WZZZ Level 6 Level 6 (11,875 points)
    Currently Being Moderated
    May 11, 2013 5:46 AM (in response to WZZZ)
  • WZZZ Level 6 Level 6 (11,875 points)
    Currently Being Moderated
    May 11, 2013 5:52 AM (in response to Lamc89)

    OK, do the other stuff. And what's this about the computer shutting down? And whatever browser you're using, test with another. If Safari, try Firefox and vice versa.

     

    Message was edited by: WZZZ

  • Linc Davis Level 10 Level 10 (107,540 points)
    Currently Being Moderated
    May 11, 2013 7:12 AM (in response to Lamc89)

    If you have a wireless connection to your router, please connect to it with Ethernet, if possible, and turn off Wi-Fi. Any difference?

  • Rudegar Level 6 Level 6 (18,430 points)
    Currently Being Moderated
    May 11, 2013 7:16 AM (in response to Lamc89)

    dns have nothing to do with is

     

    what dns is is that it translate the www.apple.com to an IP address

    so rather then typing in

     

    https://17.172.224.47/macpro/

    you type in

    http://www.apple.com/macpro/

     

     

    both will give you the same page but one will be more intuative

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