Questions tagged [anti-virus]

software used to prevent, detect and remove malware such as computer viruses, computer worms, trojan horses, spyware and adware.

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11answers
4k views

Is it generally advisable to get anti-virus software for Mac OS X?

Is it worth to buy an anti-virus software for Mac OS X? I heard both opinions like "it's not possible to get a virus on Mac OS X" and "Mac OS X is also vulnerable against virus... " Which is true? ...
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5answers
4k views

Can someone help me evaluate if this is a scam for Mac support?

My father-in-law purchased a $400 lifetime support contract with a company (Cyber PC Experts). Recently his computer has been acting up—running very slowly—so he requested support. The service tech ...
10
votes
1answer
4k views

Pop-up “Firmware changes detected” randomly appear

This message just popped up on my Mac What could have caused this? I see the file eficheck.bin, how can I tell if my EFI firmware is OK? After sending this to Apple, what happens next?
9
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5answers
2k views

Anti-virus comparison for Mac OS X

This is not a "I use OS X, do I need Anti-Virus?" question. I am looking at comparison and user opinion of existing AV products. I know I can avoid most (if not all) threats by being careful on the ...
5
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3answers
6k views

How reliable and trustworthy are the Objective-See Security tools (KnockKnock (UI), Dynamic Hijack Scanner and BlockBlock)?

DHS found an issue Is this a false positive? Anybody else with the same message? I installed BlockBlock. What do you think about it? Do you trust those Security tools? BlockBlock (beta) ...
4
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3answers
4k views

How do I uninstall Bitdefender Endpoint Security for Mac?

This application is not listed in my apps, nor does it ship with an uninstaller I can locate. The support site says to contact their support team, but the product is not listed in the drop down for ...
4
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3answers
37k views

How to open files from unknown developers without a warning in OSX?

I believe I have too much security on my mac. Whenever I try changing a file name or install a program I have to enter my laptop's password. Moreover, I cannot quickly access downloaded programs ...
4
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3answers
564 views

Is antivirus software a necessity with the “rise” of MacDefender and others?

I have heard broadly about the so-called "rise" of the Mac viruses. Apparently, there is a "whole new deluge" of Mac viruses. So far, I have gotten nothing that I can see. But I'm beginning to wonder ...
4
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4answers
184 views

When running a virtualized operating system on my Mac, is it important to have anti virus software?

Just curious if it is important to have anti virus for a virtualized operating system I got to thinking, that operating system is actively connecting to the Internet, so I thought maybe it had ...
4
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1answer
3k views

Run untrusted application safely through sandbox-exec command

I'm trying to run a potentially untrusted application without the following permissions, through the sandbox-exec command: file write (to avoid corruption/injection of files) network (to avoid ...
3
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5answers
1k views

Why does OS X warn me before running an app downloaded from the Internet?

I'm always hearing that there is practically no malware threat in Mac OS: clearly claims that there is no Mac malware are exaggerated, but the received wisdom is that they are a negligible threat and ...
3
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5answers
695 views

Can malware move from Windows to Mac

I recently got a Mac, and am transferring files from my old Windows laptop which had kept freezing with very high hard-drive activity, and may or may not be infected with malware. I'm wondering if ...
3
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1answer
5k views

What security preferences are blocking McAfee?

I changed some of my Macbook's security settings today. I also updated to the latest version of High Sierra (10.13.4) shortly before changing my security settings. Shortly thereafter, I got the ...
3
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1answer
704 views

Is anti virus a battery hog?

My university makes you download an anti-virus and something called safeconnect in order to connect to the internet (eduroam). I'm very careful and wouldn't have either on my computer if it was up to ...
3
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3answers
2k views

Does Avast noticeably affect battery life?

I am thinking about installing the free Avast anti-virus software on my MacBook Air (2012). Once Avast has completed its first scan of all of the files, does its continued operation noticeably affect ...
3
votes
1answer
534 views

Why does McAfee Endpoint Protection keep auto installing?

I want to know how I can permanent uninstall McAfee Endpoint Protection. I've used the uninstall command found here, and it works. It uninstalls the software. But after some time it will auto install ...
3
votes
1answer
42 views

SophosAV slows the dictionary pop-up

I've got the virus scanner from Sophos installed on my Mac with on-access-scan enabled. The on-access-scan delays the dictionary pop-up for several seconds for every first prompt after boot up. You ...
3
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2answers
3k views

infection in ~Library/Application Support/Mobilesync/Backup/xxxxx

ClamX is finding phishing infection in the Backup folder on my MacBook Pro with 10.7. ~Library/Application Support/Mobilesync/Backup/xxxxxxxx Does this mean that either my iPhone or Mac is infected? ...
2
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3answers
1k views

Antivirus not prominent on iOS devices

How come there are no antiviruses for iOS devices like iPhones and iPads while Android has many available? Update The article here shows that there have been attacks on the iOS Devices as well http://...
2
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2answers
9k views

How to disable or remove the YaraScanService (MRT.app)?

Recently on MacOS 10.13.6 I have noticed high CPU usage and identified the process YaraScanService as consuming close to 90% CPU. The Activity Monitor lists it under: /System/Library/CoreServices/...
2
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2answers
149 views

Antivirus that runs only by request

I just want a lightweight antivirus for my Mac that doesn't keep running on background but only scanning a file by request. Is there any?
2
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1answer
2k views

How to delete Windows “locked” files?

My friend gave me a USB key that has Windows Viruses on it. On my mac, when I try to delete them it fails and tells me that those files are "locked". I ran an anti-virus, which also was unable to ...
2
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2answers
438 views

HAVP and OS Xserver

I am running OS X server 10.8 ClamXAV is built in. I have installed and am running squidman (Squid proxy server). I'd like to install HAVP and get it up and running. The error I get when I ./...
2
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1answer
147 views

Symantec alerted an attack: OSX Apple File Print Remote BO from TimeMachine

Symantec Endpoint Protection reported that there are attacks from my TimeMachine with Attack Name: OS X Apple File Print Remote BO The attack happens at least twice a week. From Symantec ...
2
votes
1answer
155 views

Early 90s Mac freeware anti-virus program

I'm trying to find information about a popular early 90s Macintosh freeware anti-virus program. I can't remember its name. As I recall it installed as an extension and the icon was a frilly black 'V' ...
2
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1answer
746 views

ClamXav not protecting against Malware and Trojans, what to do

Possible Duplicate: Anti-virus comparison for Mac OS X I am using ClamXav for protecting my Mac from Antivirus. But I don't think that it protects from Malware, Spyware, or Trojans. So, what ...
2
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1answer
362 views

Shove installed a launch daemon or agent popup window, what is it?

Please check the following screenshot: Today, I suddenly have this popup window warning. I have no idea what it is. Basically I have three questions. (1) Is this BlockBlock app warning? I have no ...
2
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1answer
150 views

Concerned I may have accidentally dropped malware (or something) onto my system

First time poster in this part of Stack Exchange - apologies I have posted in the wrong section. In short I have an iMac running 10.8. Most of the time I quite happily get about my business but about ...
2
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3answers
15k views

Manually cleaning up a threat detected by Sophos Anti-virus?

I was viewing another answer on this website and one of the links lead me to a malicious website. I have Sophos Antivirus installed, and a warning immediately popped up telling me that a threat was ...
2
votes
2answers
327 views

Active monitoring and scheduled scanning in ClamXav?

I want to use an antivirus app on my Mac, and I heard that ClamXav is a good one to use. However, I'm not sure how to use it. All previous anti-virus scanners that I have used have two main features: ...
2
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0answers
702 views

Outlook force closes because Avast finds malware

Almost as soon as I open Outlook 2011, Avast pops up with it's shield warning: That's MSIL:GenMalicious-ALS [Trj]. Outlook has then "encountered an error and needs to close"; too quickly for me to ...
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1answer
3k views

Confusion in understanding data fork, resource fork and the MachO file format when viewed all together

Note: I am a newbie to the OS X world. So please take it easy if I ask something noobish. According to what I have read/understood: MachO's file layout consists of a header, load commands and data ...
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1answer
1k views

How do I uninstall Trend Micro Security Agent?

I have been trying to uninstall the Trend Micro anti-virus software on my Mac (10.13.6) and have been encountering a lot of difficulty. Trend Micro's website refers to a couple of uninstaller options, ...
1
vote
1answer
356 views

There is a broken Sophos entry in Keychain Access after uninstalling the program - how do I remove it?

I've followed the official instructions and also tried running the official removal tool (which btw hangs) for Sophos anti-virus for Mac but I still see a "Sophos" entry in Keychain Access. I have ...
1
vote
1answer
2k views

Cisco AnyConnect denies connection after failing to recognize antivirus

First I'd like to say... I don't typically install antivirus on my computers but I had to make an exception for a client. I've talked to their help desk about this issue and aside from providing a ...
1
vote
1answer
236 views

Only HTTPS websites working otherwise I receive ERR_CONNECTION_REFUSED [duplicate]

I am facing annoying problem of only HTTPS websites working on my Mac (in all browsers). I can only visit Google, YouTube, Facebook, Yahoo etc. So far, I tried following: Websites shows error of: ...
1
vote
1answer
2k views

AntiVirus for Mac running parallels

I'm using OS X 10.10.1 on my Mac. I use Parallels Desktop 10 and VMware Fusion 7.1. I do use windows a lot on Parallels and Fusion (Several Virtual machines). Windows 8.1,7 and XP. I've installed ...
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1answer
1k views

Precautions to prevent iPhone virus from attachment

In a momentary lapse of sanity, I opened up an attachment (a .pdf) from an unknown email address (the domain doesn't seem to be a website) in the gmail app on my iPhone 5. Realizing that there was a ...
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3answers
1k views

Restore MacBook after Avast! install (stuck at apple logo)

Somebody installed Avast! on this MacBook running OSX 10.8 (that's what uname said) and now it won't boot, it gets stuck at the apple logo and nothing more, I was able to boot into single-user mode ...
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2answers
2k views

What does XProtect protect/secure on Mac OS X?

My research so far has found XProtect appears at first glance to be a basic AV engine that scans DMG & apps through Safari, Chrome and Firefox. I'm looking to understand what does it actually do ...
1
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1answer
310 views

Does Sophos Antivirus work correctly on Lion with (legacy) FileVault enabled?

Some time ago, I installed Sophos Antivirus on my Macbook Pro running Snow Leopard and came up against the "computer stops responding after reboot, with Sophos Antivirus installed and FileVault ...
1
vote
1answer
11 views

Sophos AV always runs double instances of it's app. How do I just have 1 running?

I run Sophos Anti-Virus on macOS Mojave and it always runs two instances of the app. It has 2 menu bar icons and it runs as 2 separate processes. When I attempt to quit or force quit either of the ...
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0answers
504 views

Get a list of ALL services running and not and whether or not they should be running

The basic problem I am trying to solve is that a Norton Anti-Virus process got stuck soaking up one full processor, and I had to kill it. (there was also a message on the norton app that said ...
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0answers
48 views

Why does kernel_task cpu% grow unbounded until forced reboot? [duplicate]

I saw an issue with my MacBook Pro running El Capitan with Chrome running that the kernel_task went haywire and started sucking up all the available CPU and the % cpu just kept climbing to where it ...
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0answers
91 views

BitDefender opens randomly

BitDefender's Dock icon pops up randomly and I have to quit again and again. I tried to contact the support but got only some generic response. Does anyone have the same problem and have a workaround? ...
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0answers
70 views

Malware warnings - cause for concern?

I'm fairly sure I know the answer to this, but wanted to confirm - I was doing work on a customers site, and ran into a Google flag for malware (site includes portions from a site beginning proto... ...
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1answer
60k views

I have opened a program from a website, has my MBP been infected with a virus?

I have opened a file on https://kickass.so/revenge-s04e14-hdtv-x264-lol-ettv-t10127520.html. I was supposed to click on a torrent file but I clicked on the big DOWNLOAD link. And I had no idea that ...
0
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3answers
460 views

My Chrome on Mac (with Mac OS Sierra) always starts with feed.snowbitt.com when I run it

I always get redirected to site feed.snowbitt.com when I run my Chrome. I tried to: -Delete Chrome from computer, and reinstall it. Didn' work. -Clear all my content, browsing history from Chrome. ...
0
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1answer
187 views

What is the function of `Library/Application Support/updater_mcy/updater_mcy` file?

My Avast security app has isolated the following file: Library/Application Support/updater_mcy/updater_mcy Since this has happened, I think it has resulted in me getting error messages on my Mac ...
0
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1answer
73 views

Is there free real time app to protect my Mac that are not dangerous for Mac or its user?

Do following real time protection apps for Mac harm Mac technologically or spy after the user? AVAST, Avira, Sophos, AVG