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would it be recomended  If I install a antivirus or some software to keep clean and secure my mac?

621 Views 13 Replies Latest reply: Sep 21, 2013 12:27 AM by rioslawyer RSS
rioslawyer Level 1 Level 1 (0 points)
Currently Being Moderated
Sep 16, 2013 11:23 PM

would it be recomended  If I install a antivirus or some software to keep clean and secure my mac?

MacBook Pro, OS X Mountain Lion (10.8.4)
  • Kappy Level 10 Level 10 (220,960 points)

    It isn't really necessary to install AV software. OS X protects on its own.

     

    Helpful Links Regarding Malware Protection

     

    An excellent link to read is Tom Reed's Mac Malware Guide.

    Also, visit The XLab FAQs and read Detecting and avoiding malware and spyware.

    See these Apple articles:

     

              Mac OS X Snow Leopard and malware detection

              OS X Lion- Protect your Mac from malware

              OS X Mountain Lion- Protect your Mac from malware

              About file quarantine in OS X

     

    If you require anti-virus protection I recommend using ClamXav.

  • MadMacs0 Level 4 Level 4 (3,315 points)

    rioslawyer wrote:

     

    The people at best buy told me (obviously to sell a product), it would be better if I have protection against viruses, malware and to protect information and passwords, so that worries me.

    They probably also wanted to sell you their extended warrantee that you don't need, at least they always have when I bought something from them.

     

    As long as you keep your software fully up-to-date, pay attention to any warnings the OS gives you, keep GateKeeper enabled and don't install Java, you are fully protected against all currently known malware that can impact OS X and it's applications. If you must install Java for any reason, keep it turned off in all your browsers except when you must visit a site that requires it and disable it immediately after leaving the site.

     

    If you regularly exchange files with Windows users, then I'm sure they would appreciate your using an A-V product that detects Windows malware to keep from infecting them.

  • nbar Calculating status...

    There is currently no Virus that infects OSX. If you want to secure your mac, read this user tip by ds store. It is extremely comprehensive and helpful:

    Harden your Mac against malware attacks

  • Klaus1 Level 8 Level 8 (43,300 points)

    You may find this User Tip on Viruses, Trojan Detection and Removal, as well as general Internet Security and Privacy, useful: The User Tip seeks to offer guidance on the main security threats and how to avoid them.

     

    https://discussions.apple.com/docs/DOC-2435

  • Linc Davis Level 10 Level 10 (107,430 points)

    1. This comment applies to malicious software ("malware") that's installed unwittingly by the victim of a network attack. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the victim's computer. That threat is in a different category, and there's no easy way to defend against it. If you have reason to suspect that you're the target of such an attack, you need expert help.
      
    If you find this comment too long or too technical, read only sections 5, 6, and 10.
      
    OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.

    2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user, but internally Apple calls it "XProtect." The malware recognition database is automatically checked for updates once a day; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
       
    The following caveats apply to XProtect:
    • It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
    • It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
    3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't necessarily been tested by Apple, but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. That may not mean much if the developer lives in a country with a weak legal system (see below.)
       
    Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
    • It can easily be disabled or overridden by the user.
    • A malware attacker could get control of a code-signing certificate under false pretenses, or could simply ignore the consequences of distributing codesigned malware.
    • An App Store developer could find a way to bypass Apple's oversight, or the oversight could fail due to human error.
    For the reasons given above, App Store products, and other applications recognized by Gatekeeper as signed, are safer than others, but they can't be considered absolutely safe. "Sandboxed" applications may prompt for access to private data, such as your contacts, or for access to the network. Think before granting that access. OS X security is based on user input. Never click through any request for authorization without thinking.
           
    4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is presumably effective against known attacks, but maybe not against unknown attacks. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
     
    5. XProtect, Gatekeeper, and MRT reduce the risk of malware attack, but they're not absolute protection. The first and best line of defense is always your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and the malware attacker. If you're smarter than he thinks you are, you'll win.
        
    That means, in practice, that you never use software that comes from an untrustworthy source, or that does something inherently untrustworthy. How do you know what is trustworthy?
    • Any website that prompts you to install a “codec,” “plug-in,” "player," "extractor," or “certificate” that comes from that same site, or an unknown one, is untrustworthy.
    • A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
    • Pirated copies or "cracks" of commercial software, no matter where they come from, are unsafe.
    • Software of any kind downloaded from a BitTorrent or from a Usenet binary newsgroup is unsafe.
    • Software that purports to help you do something that's illegal or that infringes copyright, such as saving streamed audio or video for reuse without permission, is unsafe. All YouTube "downloaders" are in this category, though not all are necessarily harmful.
    • Software with a corporate brand, such as Adobe Flash Player, must be downloaded directly from the developer’s website. If it comes from any other source, it's unsafe.
    • Even signed applications, no matter what the source, should not be trusted if they do something unexpected, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
    6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style virus affecting OS X. Merely loading a page with malicious Java content could be harmful.
      
    Fortunately, client-side Java on the Web is obsolete and mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
       
    Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable itnot JavaScript — in your browsers.
       
    Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a task on a specific site, enable Java only for that site in Safari. Never enable Java for a public website that carries third-party advertising. Use it only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a lock icon in the address bar with the abbreviation "https" when visiting a secure site.

    Follow the above guidelines, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself from malware.

    7. Never install any commercial "anti-virus" or "Internet security" products for the Mac, as they all do more harm than good, if they do any good at all. Any database of known threats is always going to be out of date. Most of the danger is from unknown threats. If you need to be able to detect Windows malware in your files, use one of the free anti-virus products in the Mac App Store — nothing else.
      
    Why shouldn't you use commercial "anti-virus" products?
    • Their design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere.
    • In order to meet that nonexistent threat, the software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
    • By modifying the operating system, the software itself may create weaknesses that could be exploited by malware attackers.
    8. An anti-malware product from the App Store, such as "ClamXav," doesn't have these drawbacks. That doesn't mean it's entirely safe. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
        
    An anti-virus app is not needed, and should not be relied upon, for protection against OS X malware. It's useful only for detecting Windows malware. Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else.
        
    A Windows malware attachment in email is usually easy to recognize. The file name will often be targeted at people who aren't very bright; for example:
      
    ♥♥♥♥♥♥♥♥♥♥♥♥♥♥!!!!!!!H0TBABEZ4U!!!!!!!.AVI♥♥♥♥♥♥♥♥♥♥♥♥♥♥.exe
       
    Anti-virus software may be able to tell you which particular virus or trojan it is, but do you care? In practice, there's seldom a reason to use the software unless a network administrator requires you to do it.
      
    The ClamXav developer won't try to "upsell" you to a paid version of the product. Other developers may do that. Don't be upsold. For one thing, you should not pay to protect Windows users from the consequences of their choice of computing platform. For another, a paid upgrade from a free app will probably have the disadvantages mentioned in section 7.
      
    9. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.
        
    10. As a Mac user you don't have to live in fear that your computer is going to be infected every time you install an application, read email, or visit a web page. But neither should you have the false idea that you will always be safe, no matter what you do. The greatest harm done by security software is precisely its selling point: it makes people feel safe. They may then feel safe enough to take risks from which the software doesn't protect them. Nothing can lessen the need for safe computing practices.

  • thomas_r. Level 7 Level 7 (26,920 points)

    There is currently no Virus that infects OSX.

     

    “There are no Mac viruses”

  • PlotinusVeritas Level 6 Level 6 (13,585 points)

    It isn't really necessary to install AV software. OS X protects on its own.

     

     

     

     

    Install ClamXaV for that "in case the sky falls and pigs fly" occurance.

     

    ClamAV is currently tested daily in comparative tests against other antivirus products on Shadowserver. In 2011, Shadowserver tested over 25 million samples against ClamAV and numerous other antivirus products. Out of the 25 million samples tested.

     

     

     

    its free

     

    http://www.clamxav.com/

  • nbar Level 5 Level 5 (6,480 points)

    Mr. Reed,

    I read your blog and often point people to it. I think my statement was quoted out of context, however, given the fact that I followed it with ds store's user tip, which explains the differences in depth and explicitly states:

     

    "Viruses are malware that attach themselves to known files and shared amongst users unawares. OS X based viruses are rare and so far non-existent in circulation."

  • thomas_r. Level 7 Level 7 (26,920 points)

    I think my statement was quoted out of context

     

    I disagree. Many people want their information in small bits, and will not bother to click through to the page you linked to. They will read "there are no Mac viruses" and stop there, not interested in the nitty-gritty details, and ending up with a resulting false sense of security. I'm trying to raise people's awareness on this site of the dangers of making such statements.

  • nbar Level 5 Level 5 (6,480 points)

    "would it be recomended  If I install a antivirus or some software to keep clean and secure my mac?"

     

    This was the original question.

    In my opinion, if an OP is unwilling to read a User Tip a few pages in length that clearly and succinctly explains the answer to that question, then the OP has no interest in actually finding an answer.

     

    That being said, I think you raise a good point. I agree that the statement 'there are no Mac viruses' can be misleading. It would be more helpful to append "though OSX is not invulnerable to all types of malware...etc" to that statement...(which I will do in the future, now that you pointed it out). Cheers .

  • thomas_r. Level 7 Level 7 (26,920 points)

    That being said, I think you raise a good point. I agree that the statement 'there are no Mac viruses' can be misleading. It would be more helpful to append "though OSX is not invulnerable to all types of malware...etc" to that statement...

     

    That's all I'm saying. There are many here who refuse to listen to that point, so I appreciate that you are!

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