Malware, short for malicious software, is software designed to disrupt computer operation, gather sensitive information, or gain unauthorized access to computer systems.

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Can malware be the source or 600% load on 8-core i7 processor with nothing in Activity Monitor nor `top`?

My Mac suddenly started showing a heavy processor load, i.e. 600% or more. When I checked in iStat Menus, Activity Monitor and sudo top, no process was shown to consume more than 10%. Should I worry ...
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33 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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1answer
61 views

What is the performance penalty of using RansomWhere.app?

As many might be aware OS X is now potential victim of ransomware exploits. So far we have one example only, First Mac-targeting ransom ware hits Transmission users, researchers say, but chances are ...
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1answer
46 views

Is DetectX itself malware?

A friend installed Mackeeper, and I tried to uninstall it with DetectX. As far as I know, DetectX is not known malware as I can only find positive comments about it. But, I'm concerned that I cannot ...
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1answer
149 views

Does FileVault protect against ransomware?

I've already asked a question about ransomware on OS X in general. But I failed to get a response regarding whether FileVault protects against it. That is what this question is about. I'm also ...
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1answer
204 views

Paste stops working (“CFPasteboardRef: Lock timeout”)

Pasting from the clipboard stopped working on my Mac. Nothing is pasted, and the following line appears many time in syslog. Apr 5 **:**:** *** com.apple.WebKit.WebContent[6583] <Warning>: ...
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1answer
34 views

Suspicious warning about a Kernel Extension

This morning i received this warning from BlockBlock about a new kernel extension being installed. I'm running OS X 10.11.4. I looked up on google and found out that it could be related to a ...
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144 views

Hidden processes causing huge increase in ios data usage?

On my first iphone the data usage was both reasonable and logical at the beginning, but a couple months in and I was seeing a ridiculous increase of >5x usage. I started off average 5-8 gb/month and ...
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2answers
461 views

Logging in to main user turns off the mac

I am not a mac user, and honestly, I have no idea how to use one (besides the terminal). So, a friend asked if I could help them out with fixing their computer. She says the last thing she was on, was ...
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20 views

Mail on Yosemite 10.10.5 Can't stop Mail from downloading attachments

Simply trying to disable Mail from downloading attachments automatically. So I went to Mail > Preferences > Accounts > Advanced tab and turned off the "Automatically download all attachments" option. ...
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1answer
40 views

Should I be worried after clicking on attachment in scam email?

I received the email in the screenshot, which I'm fairly sure is a scam. I clicked on the attachment in the Mail app on my iPhone 6 (iOS 9.2). Note that I didn't unzip the attachment. Should I be ...
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39 views

What is the origin of dubious popup “UPDATING_LOCKED_TITLE”?

I was working on a Mac running Yosemite (10.10.4) with the following applications running: XQuartz (with around 10 windows), App Store (running the last update: OS X Update 10.10.5, iTunes 12.3.3, ...
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2answers
94 views

WeTransfer email received without ever using the service

I'm am using a MacBook Pro 2012 using El Captain version 10.11.3 I received 5 minutes ago an email from WeTransfer (noreply@wetransfer.com) saying that "Your file has been sent to ***@libero.it. As ...
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1answer
53 views

Is it too much paranoia to be suspicious of software that require a separate “Helper App”?

I was out trying to find a good system monitor application and decided to give a shot to Monity, which has gotten several good reviews from respectable journals. What bothers me is that the ...
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1answer
64 views

do i need to reinstall el capitan

I have recently acquired my first apple product an Imac el capitan. I let a security firm scam into my computer and even though nothing has changed I feel compromised. others have suggested I ...
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31 views

When acting as a “Personal Hotspot”, does an iPhone ever do anything beyond routing?

I want to use the iPhone's Personal Hotspot feature as my primary connection to the internet. I'm a little nervous about placing my iPhone at risk to hacking. Does Personal Hotspot perform any action ...
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1answer
43 views

Start app/command-line tool without internet/network access

Is there anything that can help me launch an app or command-line tool without internet or network access even when I'm connected to the internet? (so that I can use other apps with Internet, and block ...
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4answers
2k views

A security update locked OSX.GenieoDropper.A

I need to launch an app but OSX recognise it as a malware. While launching this app, OSX says "app will damage this computer. You should eject this disk image. It contain OSX.GenieoDropper.A". ...
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1answer
85 views

Need to force close suspicious tab/dialogue box jamming everything

Need to force close suspicious tab without accepting a download from a dialogue box that currently has the whole browser stuck.It wants me to click "OK" to unfreeze things. The screen shot (for those ...
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178 views

What is AppleCameraAssistant and why is it using so many CPU cycles?

I noticed in top that AppleCameraAssistant is one of the most CPU-intensive processes currently running (well, technically it's sleeping, so it has 0.0% CPU, but it's still near the top of the list ...
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0answers
29 views

How to make sense of >100% CPU usage and re-spawning of a force-quitted process?

My MBP was making loud noises again so I opened up my activity manager and I was baffled to see that the CPU usage of mutt is more than 100%. This is strange because all I was doing in it was to ...
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40 views

How to get rid of the malware which creates folders

Recently I encountered some weird folders in the names of my files (including extension) which prevents some files being called. e.g. a file named index.html has been moved to a folder named index....
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1answer
44 views

What is MacUpdaterSwift in my com.apple.loginitems.plist file?

I saw some strange entries in my Login Items, so I decided to do some digging in the associated com.apple.loginitems.plist file, and found something called MacUpdaterSwift. Google only gave me three ...
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1answer
55 views

Performance problems, possibly malware?

I have concerns about malware or something significantly affecting the performance of my iMac. As you can see from the screen shot below I have updated to OS X Yosemite Version 10.10.5, but I did ...
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33 views

Can a Remote Access Trojan infect a MacBook Pro's Hardware?

I recently threw out my old MacBook Pro HDD and replaced it with a new ones as I suspected it had been infected with a RAT (Remote Access Trojan). Is it possible that the RAT is still lurking ...
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1answer
37 views

Unknown wifi connection in my Connection dropdown menu

My problem is that I have this strange wifi connection name as shown in the attached image below among my wifi connections. Each time the name is different which is always a randomly generated ...
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2answers
338 views

How can I reinstall OS X without a valid App Store connection?

I have a Mid 2009 MacBook Pro that was used by a "less than responsible" user. As such, it seems to have become infected with malware that rewrites all SSL certificates. These certificates cannot be ...
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2answers
2k views

What is AppSC extremely slowing down my MacBook Pro?

I noticed that my OS X very frequently runs extremely slow and everything lags. I opened up Activity Monitor and I saw that something called AppSC is using up to 95% of the memory. It makes my ...
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1answer
931 views

What is coupond?

I restarted my Mac, running El Capitan, and got a pop up asking whether I wanted to allow "coupond" to accept incoming network connections. I said no. I rebooted and got the message again. I have no ...
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0answers
54 views

Advice on securely removing malware

I helping out a friend who thinks they may have malware on their machine. I don't what kind or to what extent, so I don't want to boot into the system. My question is Is there a good boot time ...
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1answer
57 views

“Remote Desktop Client” updated, but NOT installed

I just purchased a used iMac yesterday. Today, the app store updated "Apple Remote Desktop Client". I can not find an app called that in my app folder. Could it be hidden? Could this be used to 'spy' ...
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1answer
75 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 ...
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1answer
2k views

impact and removal of XcodeGhost

Unfortunately, I installed some of the apps mentioned on this list, and confirmed that the versions I have are still compromised by XcodeGhost: http://researchcenter.paloaltonetworks.com/2015/09/...
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2answers
1k views

Yahoo is taking over my Google search from my Safari on my Mac

In Safari Preferences, Google is my Default Search Engine; New Windows and New Tabs are set to Homepage. However, recently whenever I Google something, I click on my choice and I end up on Yahoo ...
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1answer
486 views

why Chrome pop up from gocomputerhelp247.com/system-alert

Why did I suddenly get a message with a Chrome icon to call a phone number immediately because I was under attack? The address was gocomputerhelp247.com/system-alert. It told me under no circumstances ...
4
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1answer
493 views

How to recover files from the home directory that malware removed on OS X 10.10.5 Yosemite?

Two days ago, somehow, my Mac running OS X Yosemite 10.10.5 got infected by malware and it deleted almost all my files from my home directory. I have no idea how it happened (it wasn't because clicked ...
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2answers
81 views

iPad 2 company installed monitoring malware

A company I used to work for installed tracking malware on my iPad 2. It monitors my emails, Facebook, changes my passwords, etc. I did a complete reset at an Apple Store, it is still there. The Apple ...
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1answer
22 views

Removing MySearchDial malware

My brother decided to install uTorrent on my iMac. In doing so, he accepted the installation of MySearchDial, a browser hijacker. I now have no idea how to remove it. Adding a new tab in Chrome will ...
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37 views

lsof on 10.7.5 does not show some connection attempts - is rootkit the only explanation?

After having SANS 504 training recently I am trying to catch some nasty stuff on my computers and finally I found something I am unable to explain. I am running concurrently Wireshark and lsof loop ...
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1answer
35 views

OS X: Spontaneous Application Appearance

A friend of mine asked me to inspect her computer a while ago as she suspected that she may have some virus trouble. In part of my initial check of her computer (MacBook Pro OS X, probably Mavericks) ...
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1answer
2k views

Can I unload com.apple.mrt via launchd or otherwise remedy these errors?

I just realized that the job com.apple.mrt crashes every 10 seconds on my Mac. What exactly is the aim of com.apple.mrt? Apparently it should be a "Malware Removal Tool". Can I remove it from ...
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1answer
129 views

Possible keylogger? How to remove?

I'm tailing var/log/sys.log and I keep getting this message: Jul 13 23:43:52 mac[redacted lol] syslogagent[19960]: Authentication String htt[space added]p://logsviewer.com/membermac/livedesk/...
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1answer
85 views

iPhone 4 screen lock through unsolicited ad

On my iPhone 4 A1332 I had a pop-up this morning from daily-offers-online.com which I could not remove. I had no access to Safari until I clicked on the pop-up's OK button (which I did by accident). ...
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2answers
137 views

My iMac will not allow me to log onto my desktop

I got a viruses alert when using my Mac and sadly I reacted ASAP. I gave control to a remote technican via log-me-in and I went through the steps that where asked. After I got off the phone with the ...
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1answer
167 views

Is this iPhone alert Trojan/Malware? [duplicate]

Once in a while I get this bizarre behavior on my iPhone 5's screen with iOS 8.3.1. (The button says 'Approve' - in Hebrew). I can't say if its SMS/MMS or something else. But it feels like Malware. ...
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1answer
38 views

Opening suspicious files

How can I deal/inspect a suspicious file on my mac short of installing and creating a full blown virtual machine instance? On windows when I want to open a suspicious file I use the sandboxing app ...
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0answers
379 views

Is this a new virus or adware/malware signature? How do I resolve this?

Since the last 12 hours or so, I've been facing a virus that's somewhat peculiar. When I open websites, and click any link on those websites, I get a new pop-up tab that opens a link from ad.adsmatte....
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3k views

Eliminate com.adobe.ARMDC.Communicator.plist malware

Running an Early '09 iMac with Mavericks. Earlier this month I began to see a pop up referencing a 'malware cleaner'. Below is a copy of items dated May 4th in the Launch Agents and Launch Daemons ...
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1answer
383 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
338 views

IPad and IPhone - backing up “corrupted” file - spyware on IPad

My IPad Backup failed because the back up is corrupt. Deleting the back up using iTunes or Windows File Explorer and repeating did not work. During Backup to my PC I got multiple popups from ESET ...