need iantivirus?

Discussion in 'MacBook Pro' started by oneapplegeek, Jun 14, 2012.

  1. oneapplegeek macrumors regular


    May 14, 2012
    I know mac is not exposed to virus as much as windows, but I realize that iantivirus is on the top list at mac app store. I wonder how many people are actually using this app and how it's effective. :)
  2. mnsportsgeek macrumors 68000

    Feb 24, 2009
    don't bog down your beautiful new machine with crappy anti-virus software. You're mac will be fine.
  3. dccorona macrumors 68020


    Jun 12, 2008
    I disagree with the above poster. We're getting to the point where macs need AV software. As we speak I am "cleaning up" a threat that was detected on my computer.

    I would never specifically advise AGAINST AV software on a mac, and I always recommend it.

    Not this iav stuff though...Norton software tends to always be bloated and not really that great to begin with. get sophos. Seriously.You may be glad you did
  4. old-wiz macrumors G3

    Mar 26, 2008
    West Suburban Boston Ma
    Other threads say Sophos makes your system less secure since it runs too much stuff in privileged mode.
  5. oneapplegeek thread starter macrumors regular


    May 14, 2012
    Hmm.. there are different opinion this. I actually have no problem with virus yet, but I thought it could be still secure if i have one. I guess not that many people use antivirus app. :)
  6. Queen6, Jun 15, 2012
    Last edited: Jun 15, 2012

    Queen6 macrumors 604


    Dec 11, 2008
    Land of the Unexpected
    Same question, same rhetoric (will be coming soon;

    There are several reasons to run antivirus/malware on OS X especially if you are dealing with a mixed environment passing on malicious code even inadvertently does you no favours in the profesional world, let alone family and friends. What does not hurt your Mac & OS X may bring a PC to it`s knees.

    You do need to be careful on the choice of application; ClamXav is extremely light and only looks in realtime at what you specify and it`s free. The sentry is presently utilising 0.2% of CPU consuming just over an hours worth of CPU time over several weeks and this is on a machine over four years old. Does anyone seriously still believe that running ClamXav on todays modern hardware impacts performance! The paid for packages I agree are a waste of $ offering little more than a placebo with a heavyweight user interface. ClamAV the parent of ClamXav protects numerous Unix based servers globally, which is a pretty good tip...

    ClamXav will have no impact on a modern Intel based Mac. To have a free, low headroom, accurate scanner that offers a lot of flexibility and not utilize it seems somewhat stubborn at best. The retorts of AV being a resource hog, boils down to one thing, research; ClamXav will not bog your system down, if it does you have some other inconsistencies that need addressing, or your hardware is so old it`s well and truly time to upgrade, on my Early 2008 MBP ClamXav is simply invisible, there is absolutely no degradation of performance, as for the new i7 2.4 MBP it`s completely transparant.

    I have literally decades of work on my systems, I have no intention of losing any data, ClamXav is but one tool in a multilayered safety net. Lets face it, if and when OS X is compromised it will spread like wildfire as many fundamentally believe that OS X is invulnerable, and take little or no precautions. I am not entirely sure posts that overly renforce this sense of security are helpful to the average user, even Apple recognise the threat, however the updates are too slow to be considered a preventative measure...

    I have never had a positive hit in all the years I have run ClamXav equally OS X is gaining traction and it`s simply a matter of time before someone figures it out, thinking otherwise is simply naive. ClamXav cost me nothing monetarily nor time in productivity, this is a safety net that costs little more than five minutes of your time.

    Virus/malware gains traction by exploiting vulnerabilities on unprotected systems. I don't believe for one second that CalmXav is the single security solution for OS X, it is however the de-facto standard for many mail servers globally (ClamAV), and the app is rapidly updated.

    Apple has included ClamAV with OS X server since 10.4 and continues to do so today ( (link to be updated) with OS X 10.7.4 Lion Server. ClamXav is transparent on a Intel based Mac, adds another level of protection at zero cost, yet people see no value.

    Apple also clearly list Calmav-137-1 on their 10.7.4 Open Source page ( admittedly it is not implemented in the Lion client release, equally I would not be surprised if it was quietly implemented in a forthcoming release of OS X as was XProtect implemented in Snow Leopard. Apple may simply choose to integrate ClamAV into Xprotect and the vast majority will never know the difference. As of OS X 10.6 your Mac is silently running anti malware like it or not ;)

    There are many compelling reasons to run ClamXav and few if any not too, personal choices aside I fundamentally believe that suggesting that OS X is safe to all and does not need such tools is very much a step in the wrong direction; not all are technically minded, neither do all users who may have access to machines follow the same rules and guidelines. The vast majority simply point and click to get to where or what they want ClamXav simply serves as a barrier to protect those that are unaware and some cases unconcerned, ultimately such safeguards protect the community as a whole.

    You will read many reasons not to install AV on your MAC, however few are truly convincing, safe computing will protect you from the known. AV will not drag down your Mac, and potentially save your system from the unknown. Saving a few CPU cycles just out of principle is at best foolhardy, it`s been stated over and over that once a malicious app does strike OS X it will spread like wildfire due to the average users misconception that Mac`s are impervious to malicious code, it`s simply a matter of time....

    Install, dont install it`s down to you now...............
  7. jaysen macrumors 6502

    Sep 16, 2009
    Very informative and could not agree more....
  8. GGJstudios macrumors Westmere


    May 16, 2008
    iAntiVirus has a bogus malware definitions list, making their detection accuracy untrustworthy. They also make inaccurate claims about the existence of Mac malware, in order to hype the need for their product. This post will give details.

    Macs are not immune to malware, but no true viruses exist in the wild that can run on Mac OS X, and there never have been any since it was released over 10 years ago. The only malware in the wild that can affect Mac OS X is a handful of trojans, which can be easily avoided by practicing safe computing (see below). Also, Mac OS X Snow Leopard and Lion have anti-malware protection built in, further reducing the need for 3rd party antivirus apps.
    1. Make sure your built-in Mac firewall is enabled in System Preferences > Security > Firewall

    2. Uncheck "Open "safe" files after downloading" in Safari > Preferences > General

    3. Disable Java in your browser (Safari, Chrome, Firefox). This will protect you from malware that exploits Java in your browser, including the recent Flashback trojan. Leave Java disabled until you visit a trusted site that requires it, then re-enable only for the duration of your visit to that site. (This is not to be confused with JavaScript, which you should leave enabled.)

    4. Change your DNS servers to OpenDNS servers by reading this.

    5. Be careful to only install software from trusted, reputable sites. Never install pirated software. If you're not sure about an app, ask in this forum before installing.

    6. Never let someone else have access to install anything on your Mac.

    7. Don't open files that you receive from unknown or untrusted sources.

    8. For added security, make sure all network, email, financial and other important passwords are long and complex, including upper and lower case letters, numbers and special characters.

    9. Always keep your Mac and application software updated. Use Software Update for your Mac software. For other software, it's safer to get updates from the developer's site or from the menu item "Check for updates", rather than installing from any notification window that pops up while you're surfing the web.
    That's all you need to do to keep your Mac completely free of any Mac OS X malware that has ever been released into the wild. You don't need any 3rd party software to keep your Mac secure.

    If you still want to run antivirus for some reason, ClamXav (which is free) is one of the best choices, since it isn't a resource hog, detects both Mac and Windows malware and doesn't run with elevated privileges. You can run scans when you choose, rather than leaving it running all the time, slowing your system. ClamXav has a Sentry feature which, if enabled, will use significant system resources to constantly scan. Disable the Sentry feature. You don't need it. Also, when you first install ClamXav, as with many antivirus apps, it may perform an initial full system scan, which will consume resources. Once the initial scan is complete, periodic on-demand scans will have much lower demands on resources.
    I recommend that you avoid using Sophos, as it could actually increase your Mac's vulnerability, as described here and here.

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