albflying

Q: Computer shuts down, kernel error?

I am not tech savvy, but I have read a lot these past two days and have learned how to find out this is somehow a kernel "panic"...

what do I do?

 

System used:

OS X

Version 10.9.2

Software is updated-ever since security update on 25 April 2014, the computer has been shutting down.

MacBook Pro, 15 inch, late 2011

I only have open:

Firefox (updated)

MS Word (updated)

 

 

Anonymous UUID:       F08D928D-E704-D1B5-BA0D-30F2545D826B

 

 

 

Mon Apr 28 00:00:59 2014

 

Panic(CPU 6): NMIPI for spinlock acquisition timeout, spinlock: 0xffffff803064f178, spinlock owner: 0xffffff803028a280, current_thread: 0xffffff803028a280, spinlock_owner_cpu: 0x6

 

RAX: 0x0000000000000000, RBX: 0x0000000000000000, RCX: 0x0000000000000008, RDX: 0x0000000000000014

 

RSP: 0xffffff80a1c93ec0, RBP: 0xffffff80a1c93f70, RSI: 0xffffff80307589d0, RDI: 0x0000000000000000

 

R8:  0x0000000000000001, R9:  0x0000000000000000, R10: 0xffffff80a1c93e20, R11: 0xffffff8030ce4800

 

R12: 0x0000000000000000, R13: 0xffffff8030758988, R14: 0xffffff8030651560, R15: 0xffffff803064f101

 

RFL: 0x0000000000000246, RIP: 0xffffff80223c444c, CS:  0x0000000000000008, SS:  0x0000000000000010

 

Backtrace (CPU 6), Frame : Return Address

 

0xffffff809bda1f50 : 0xffffff80220e1f21

 

0xffffff809bda1f80 : 0xffffff80220db43f

 

0xffffff809bda1fd0 : 0xffffff80220f3539

 

0xffffff80a1c93f70 : 0xffffff80223c4580

 

0xffffff80a1c93fb0 : 0xffffff80220d7047

 

 

 

BSD process name corresponding to current thread: esets_proxy

 

 

 

Mac OS version:

 

13C1021

 

 

 

Kernel version:

 

Darwin Kernel Version 13.1.0: Wed Apr  2 23:52:02 PDT 2014; root:xnu-2422.92.1~2/RELEASE_X86_64

 

Kernel UUID: E9CF78E2-1E9F-3B6F-81A4-FEE6C6D0E4D5

 

Kernel slide:     0x0000000021e00000

 

Kernel text base: 0xffffff8022000000

 

System model name: MacBookPro8,2 (Mac-94245A3940C91C80)

 

 

 

System uptime in nanoseconds: 3448760835287

 

last loaded kext at 1394396755138: com.apple.iokit.IOUSBMassStorageClass       3.6.0 (addr 0xffffff7fa4800000, size 69632)

 

last unloaded kext at 1680865736888: com.apple.driver.AppleIntelMCEReporter 104 (addr 0xffffff7fa47f2000, size 32768)

 

loaded kexts:

 

com.eset.kext.esets_kac     600.00.91f01

 

com.eset.kext.esets_pfw     600.00.91f01

 

com.motorola-mobility.driver.MotMobileUSBLAN          1.2.2

 

ng.uds.netusb.controller    1.0.0d1

 

com.apple.driver.AppleUSBCDC    4.2.1b5

 

com.apple.driver.AudioAUUC        1.60

 

com.apple.driver.AppleHWSensor 1.9.5d0

 

com.apple.driver.AGPM       100.14.15

 

com.apple.filesystems.autofs        3.0

 

com.apple.iokit.IOBluetoothSerialManager          4.2.3f10

 

com.apple.driver.AppleMikeyHIDDriver   124

 

com.apple.driver.AppleMikeyDriver          2.6.0f1

 

com.apple.driver.AppleIntelHD3000Graphics    8.2.4

 

com.apple.driver.AppleHDA           2.6.0f1

 

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport      4.2.3f10

 

com.apple.driver.AppleLPC            1.7.0

 

com.apple.driver.SMCMotionSensor         3.0.4d1

 

com.apple.driver.AppleSMCLMU   2.0.4d1

 

com.apple.driver.AppleIntelSNBGraphicsFB        8.2.4

 

com.apple.driver.ACPI_SMC_PlatformPlugin       1.0.0

 

com.apple.driver.AppleMuxControl         3.4.35

 

com.apple.iokit.IOUserEthernet     1.0.0d1

 

com.apple.Dont_Steal_Mac_OS_X 7.0.0

 

com.apple.driver.AppleHWAccess            1

 

com.apple.driver.AppleUpstreamUserClient       3.5.13

 

com.apple.driver.AppleMCCSControl       1.1.12

 

com.apple.kext.AMDFramebuffer  1.2.0

 

com.apple.AMDRadeonX3000       1.2.0

 

com.apple.kext.AMD6000Controller        1.2.0

 

com.apple.driver.AppleSMCPDRC 1.0.0

 

com.apple.driver.AppleThunderboltIP     1.1.2

 

com.apple.driver.AppleUSBTCButtons     240.2

 

com.apple.driver.AppleUSBTCKeyboard  240.2

 

com.apple.driver.AppleIRController         325.7

 

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless           1.0.0d1

 

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib        1.0.0d1

 

com.apple.BootCache          35

 

com.apple.iokit.SCSITaskUserClient         3.6.6

 

com.apple.driver.XsanFilter           404

 

com.apple.driver.AppleUSBHub     666.4.0

 

com.apple.iokit.IOAHCIBlockStorage        2.5.1

 

com.apple.driver.AppleSDXC         1.5.2

 

com.apple.iokit.AppleBCM5701Ethernet  3.8.1b2

 

com.apple.driver.AppleFWOHCI    4.9.9

 

com.apple.driver.AirPort.Brcm4331         700.20.22

 

com.apple.driver.AppleAHCIPort  3.0.0

 

com.apple.driver.AppleUSBEHCI    660.4.0

 

com.apple.driver.AppleSmartBatteryManager     161.0.0

 

com.apple.driver.AppleRTC           2.0

 

com.apple.driver.AppleACPIButtons         2.0

 

com.apple.driver.AppleHPET          1.8

 

com.apple.driver.AppleSMBIOS      2.1

 

com.apple.driver.AppleACPIEC      2.0

 

com.apple.driver.AppleAPIC          1.7

 

com.apple.driver.AppleIntelCPUPowerManagementClient        216.0.0

 

com.apple.nke.applicationfirewall 153

 

com.apple.security.quarantine      3

 

com.apple.driver.AppleIntelCPUPowerManagement      216.0.0

 

com.apple.kext.triggers      1.0

 

com.apple.iokit.IOSerialFamily       10.0.7

 

com.apple.driver.DspFuncLib        2.6.0f1

 

com.apple.vecLib.kext         1.0.0

 

com.apple.iokit.IOAudioFamily      1.9.5fc2

 

com.apple.kext.OSvKernDSPLib     1.14

 

com.apple.iokit.IOBluetoothHostControllerUSBTransport        4.2.3f10

 

com.apple.iokit.IOFireWireIP           2.2.6

 

com.apple.driver.AppleSMBusPCI  1.0.12d1

 

com.apple.driver.IOPlatformPluginLegacy           1.0.0

 

com.apple.driver.AppleGraphicsControl 3.4.35

 

com.apple.driver.AppleBacklightExpert   1.0.4

 

com.apple.iokit.IOSurface   91

 

com.apple.iokit.IOBluetoothFamily            4.2.3f10

 

com.apple.driver.AppleSMC           3.1.8

 

com.apple.driver.AppleSMBusController 1.0.11d1

 

com.apple.iokit.IONDRVSupport    2.4.1

 

com.apple.iokit.IOAcceleratorFamily        98.14

 

com.apple.kext.AMDSupport         1.2.0

 

com.apple.AppleGraphicsDeviceControl 3.4.35

 

com.apple.driver.IOPlatformPluginFamily            5.7.0d10

 

com.apple.driver.AppleHDAController    2.6.0f1

 

com.apple.iokit.IOGraphicsFamily 2.4.1

 

com.apple.iokit.IOHDAFamily         2.6.0f1

 

com.apple.driver.AppleThunderboltDPInAdapter          3.1.7

 

com.apple.driver.AppleThunderboltDPAdapterFamily  3.1.7

 

com.apple.driver.AppleThunderboltPCIDownAdapter  1.4.5

 

com.apple.driver.AppleUSBMultitouch     240.9

 

com.apple.iokit.IOUSBHIDDriver    660.4.0

 

com.apple.driver.AppleUSBMergeNub      650.4.0

 

com.apple.driver.AppleUSBComposite     656.4.1

 

com.apple.iokit.IOSCSIMultimediaCommandsDevice     3.6.6

 

com.apple.iokit.IOBDStorageFamily          1.7

 

com.apple.iokit.IODVDStorageFamily       1.7.1

 

com.apple.iokit.IOCDStorageFamily          1.7.1

 

com.apple.driver.AppleThunderboltNHI  2.0.1

 

com.apple.iokit.IOThunderboltFamily      3.2.7

 

com.apple.iokit.IOAHCISerialATAPI           2.6.1

 

com.apple.iokit.IOSCSIArchitectureModelFamily            3.6.6

 

com.apple.iokit.IOUSBUserClient   660.4.2

 

com.apple.iokit.IOEthernetAVBController            1.0.3b4

 

com.apple.driver.mDNSOffloadUserClient          1.0.1b5

 

com.apple.iokit.IOFireWireFamily  4.5.5

 

com.apple.iokit.IO80211Family     630.35

 

com.apple.iokit.IONetworkingFamily        3.2

 

com.apple.iokit.IOAHCIFamily        2.6.5

 

com.apple.iokit.IOUSBFamily          675.4.0

 

com.apple.driver.AppleEFINVRAM 2.0

 

com.apple.driver.AppleEFIRuntime           2.0

 

com.apple.iokit.IOHIDFamily          2.0.0

 

com.apple.iokit.IOSMBusFamily     1.1

 

com.apple.security.sandbox          278.11

 

com.apple.kext.AppleMatch           1.0.0d1

 

com.apple.security.TMSafetyNet   7

 

com.apple.driver.AppleKeyStore   2

 

com.apple.driver.DiskImages         371.1

 

com.apple.iokit.IOStorageFamily   1.9

 

com.apple.iokit.IOReportFamily     23

 

com.apple.driver.AppleFDEKeyStore        28.30

 

com.apple.driver.AppleACPIPlatform       2.0

 

com.apple.iokit.IOPCIFamily           2.9

 

com.apple.iokit.IOACPIFamily        1.4

 

com.apple.kec.corecrypto  1.0

 

com.apple.kec.pthread        1

 

panic(cpu 4 caller 0xffffff80223c4566): "Spinlock acquisition timed out: lock=0xffffff803064f178, lock owner thread=0xffffff803028a280, current_thread: 0xffffff803d348cf0, lock owner active on CPU 0x6, current owner: 0xffffff803028a280"@/SourceCache/xnu/xnu-2422.92.1/osfmk/i386/locks_i386.c:365

 

Backtrace (CPU 4), Frame : Return Address

 

0xffffff802a1ebef0 : 0xffffff8022022fa9

 

0xffffff802a1ebf70 : 0xffffff80223c4566

 

0xffffff802a1ebfb0 : 0xffffff80220d7047

 

 

 

BSD process name corresponding to current thread: App Store

MacBook Pro, OS X Mavericks (10.9.2)

Posted on Apr 28, 2014 7:43 AM

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Q: Computer shuts down, kernel error?

  • All replies
  • Helpful answers

  • by a brody,

    a brody a brody Apr 28, 2014 7:45 AM in response to albflying
    Level 9 (66,889 points)
    Classic Mac OS
    Apr 28, 2014 7:45 AM in response to albflying

    What do you have connected via USB?

  • by albflying,

    albflying albflying Apr 28, 2014 10:03 AM in response to a brody
    Level 1 (0 points)
    Apr 28, 2014 10:03 AM in response to a brody

    I had my cell phone charging but removed it.

  • by a brody,

    a brody a brody Apr 28, 2014 10:24 AM in response to albflying
    Level 9 (66,889 points)
    Classic Mac OS
    Apr 28, 2014 10:24 AM in response to albflying

    Are you able to reboot without the cell phone attached?  And then properly shut down from the Apple menu?

  • by albflying,

    albflying albflying Apr 28, 2014 10:28 AM in response to a brody
    Level 1 (0 points)
    Apr 28, 2014 10:28 AM in response to a brody

    Cell phone was removed and it shut down on its own again. It asked if I wanted a report. This is what the report said:

    Anonymous UUID:       F08D928D-E704-D1B5-BA0D-30F2545D826B

     

    Mon Apr 28 13:36:30 2014
    Panic(CPU 0): NMIPI for spinlock acquisition timeout, spinlock: 0xffffff800e87ee38, spinlock owner: 0xffffff8011806e30, current_thread: 0xffffff8011806e30, spinlock_owner_cpu: 0x0
    RAX: 0xffffff80125299a8, RBX: 0x0000000000000000, RCX: 0xffffff80125299a8, RDX: 0xffffff8012529998
    RSP: 0xffffff808284bec0, RBP: 0xffffff808284bf70, RSI: 0xffffff80125299e0, RDI: 0x0000000000000000
    R8:  0x0000000000000000, R9:  0xffffff80767cf068, R10: 0xffffff808284bc10, R11: 0x0000000000000200
    R12: 0x0000000000000000, R13: 0xffffff8012529998, R14: 0xffffff800e87ee30, R15: 0xffffff800e87e420
    RFL: 0x0000000000000202, RIP: 0xffffff8002fc4025, CS:  0x0000000000000008, SS:  0x0000000000000010
    Backtrace (CPU 0), Frame : Return Address
    0xffffff80767cef50 : 0xffffff8002ce1f21
    0xffffff80767cef80 : 0xffffff8002cdb43f
    0xffffff80767cefd0 : 0xffffff8002cf3539
    0xffffff808284bf70 : 0xffffff8002fc45

  • by a brody,

    a brody a brody Apr 28, 2014 10:31 AM in response to albflying
    Level 9 (66,889 points)
    Classic Mac OS
    Apr 28, 2014 10:31 AM in response to albflying

    Run the hardware test that came with the Mac:

     

    http://support.apple.com/kb/ht1509

  • by albflying,

    albflying albflying Apr 28, 2014 11:08 AM in response to a brody
    Level 1 (0 points)
    Apr 28, 2014 11:08 AM in response to a brody

    It said there were no problems. Should I go forward with the extended testing?

  • by albflying,

    albflying albflying Apr 28, 2014 1:48 PM in response to albflying
    Level 1 (0 points)
    Apr 28, 2014 1:48 PM in response to albflying

    I did the extended test. It states: No trouble found.

  • by Linc Davis,Solvedanswer

    Linc Davis Linc Davis Apr 28, 2014 4:50 PM in response to albflying
    Level 10 (208,037 points)
    Applications
    Apr 28, 2014 4:50 PM in response to albflying

    Uninstall ESET by following these instructions. If you have a different version of the product, the procedure may be different.

      
    Back up all data before making any changes.
  • by albflying,

    albflying albflying Apr 28, 2014 8:23 PM in response to Linc Davis
    Level 1 (0 points)
    Apr 28, 2014 8:23 PM in response to Linc Davis

    I have uninstalled ESET and have not been shut down yet (it has been an hour)...fingers crossed, but then what do I do for antivirus?

  • by Linc Davis,

    Linc Davis Linc Davis Apr 28, 2014 8:57 PM in response to albflying
    Level 10 (208,037 points)
    Applications
    Apr 28, 2014 8:57 PM in response to albflying
    1. This is a comment on what you should and should not do to protect yourself from malicious software ("malware") that circulates on the Internet. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to your computer, or who has been able to log in to it remotely. 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. Internally Apple calls it "XProtect."
      
    The malware recognition database used by XProtect is automatically updated; 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.
    As new versions of OS X are released, it's not clear whether Apple will indefinitely continue to maintain the XProtect database of older versions such as 10.6. The security of obsolete system versions may eventually be degraded. Security updates to the code of obsolete systems will stop being released at some point, and that may leave them open to other kinds of attack besides malware.
      
    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.
    Apple has so far failed to revoke the codesigning certificates of some known abusers, thereby diluting the value of Gatekeeper and the Developer ID program. These failures don't involve App Store products, however.
      
    For the reasons given, App Store products, and—to a lesser extent—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. Sandbox 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 effective against known threats, but not against unknown ones. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
     
    5. The built-in security features of OS X reduce the risk of malware attack, but they are not, and never will be, complete protection. Malware is foremost a human problem, not a computer problem, and you can't over-rely on technology to defend against it. The best defense is always going to be 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 scam artists. If you're smarter than they think you are, you'll win. That means, in practice, that you always stay within a safe harbor of computing practices. How do you know when you're leaving the safe harbor? Below are some warning signs of danger.
      
    Software from an untrustworthy source
    • Software of any kind is distributed via BitTorrent. or Usenet, or on a website that also distributes pirated music or movies.
    • Software with a corporate brand, such as Adobe Flash Player, doesn't come directly from the developer’s website. Do not trust an alert from any website to update Flash, your browser, or anything else.
    • Rogue websites such as Softonic and CNET Download distribute free applications that have been packaged in a superfluous "installer."
    • The software is advertised by means of spam or intrusive web ads. Any ad, on any site, that includes a direct link to a download should be ignored.
    Software that is plainly illegal or does something illegal
    • High-priced commercial software such as Photoshop is "cracked" or "free."
    • An application helps you to infringe copyright, for instance by circumventing the copy protection on commercial software, or saving streamed media for reuse without permission.
    Conditional or unsolicited offers from strangers
    • A telephone caller or a web page tells you that you have a “virus” and offers to help you remove it. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
    • A web site offers free content such as video or music, but to use it you must install a “codec,” “plug-in,” "player," "downloader," "extractor," or “certificate” that comes from that same site, or an unknown one.
    • You win a prize in a contest you never entered.
    • Someone on a message board such as this one is eager to help you, but only if you download an application of his choosing.
    • A "FREE WI-FI !!!" network advertises itself in a public place such as an airport, but is not provided by the management.
    • Anything online that you would expect to pay for is "free."
    Unexpected events
    • You open what you think is a document and get an alert that it's "an application downloaded from the Internet." Click Cancel and delete the file. Even if you don't get the alert, you should still delete any file that isn't what you expected it to be.
    • An application does something you don't expect, such as asking for permission to access your contacts, your location, or the Internet for no obvious reason.
    • Software is attached to email that you didn't request, even if it comes (or seems to come) from someone you trust.
    I don't say that leaving the safe harbor just once will necessarily result in disaster, but making a habit of it will weaken your defenses against malware attack. Any of the above scenarios should, at the very least, make you uncomfortable.
      
    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.

    Stay within the safe harbor, 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.

    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. If you need to be able to detect Windows malware in your files, use one of the free security apps in the Mac App Store—nothing else.
      
    Why shouldn't you use commercial "anti-virus" products?
    • To recognize malware, the software depends on a database of known threats, which is always at least a day out of date. Research has shown that most successful attacks are "zero-day"—that is, previously unknown. Recognition-based malware scanners do not defend against such attacks.
    • 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.
    • Most importantly, a false sense of security makes you more vulnerable.
    8. An anti-malware product from the App Store, such as "ClamXav," has the same drawback as the commercial suites of being always out of date, but it does not inject code into the operating system. That doesn't mean it's entirely harmless. 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 cannot be relied upon, for protection against OS X malware. It's useful only for detecting Windows malware, and even for that use it's not really effective, because new Windows malware is emerging much faster than OS X 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 by the file name alone. An actual example:
      
    London Terror Moovie.avi [124 spaces] Checked By Norton Antivirus.exe
       
    You don't need any software to tell you that's a Windows trojan. Software may be able to tell you which trojan it is, but who cares? In practice, there's seldom a reason to use recognition software unless an institutional policy requires it. Windows malware is so widespread that you should assume it's in every unknown email attachment until proven otherwise. Nevertheless, ClamXav or a similar product from the App Store may be useful if an ill-informed network administrator says you must run some kind of "anti-virus" application.
      
    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 all 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 may be infected every time you install software, read email, or visit a web page. But neither should you assume that you will always be safe from exploitation, 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. "Hmmmm, this torrent is a crack of that new game I want. I think I'll download it. It could be a trojan, but the antivirus will warn me if it is." Then they wonder why their Mac is so slow all of a sudden. It's slow because it's running flat out mining Bitcoins for a hacker who has already sold their credit card number and banking passwords to a criminal gang. Maybe a week later the antivirus does warn them, but what good does that do?
        
    Nothing can lessen the need for safe computing practices.
  • by MadMacs0,

    MadMacs0 MadMacs0 Apr 28, 2014 11:38 PM in response to albflying
    Level 5 (4,801 points)
    Apr 28, 2014 11:38 PM in response to albflying

    albflying wrote:

     

    what do I do for antivirus?

    Linc has given you one answer. If you can share with us why you feel you need it, I can probably point you to some alternative answers.

  • by albflying,

    albflying albflying Apr 29, 2014 6:20 PM in response to MadMacs0
    Level 1 (0 points)
    Apr 29, 2014 6:20 PM in response to MadMacs0

    1. It has always been an extra safeguard as I travel extensively.

    2. The schools I work at require I have antivirus.

    3. My work requires that I have antivirus.

  • by a brody,

    a brody a brody Apr 29, 2014 7:20 PM in response to albflying
    Level 9 (66,889 points)
    Classic Mac OS
    Apr 29, 2014 7:20 PM in response to albflying

    ClamAV anti-virus and Sophos are far less intrusive, and cost less than Norton.    Businesses that require anti-viruses never bother installing Macintoshes in their network, because the only people they ever trusted to IT are Windows fanatics who don't know how to operate a Mac, or prefer to avoid a system that requires less of their assistence.   It is self-serving when you see a business that requires anti-virus, because it likely has always been sold Windows machines by its workers.