Malware (short for Malicious Software) is a type of software designed to access a computer system without the owner's informed consent.

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17answers
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How can I remove malicious spyware, malware, adware, viruses, trojans or rootkits from my PC?

What should I do if my Windows computer seems to be infected with a virus or malware? What are the symptoms of an infection? What should I do after noticing an infection? What can I do to get rid of ...
99
votes
23answers
13k views

How can I make a Windows PC bullet-proof for home users? [closed]

I realize that virus-proof on a Windows PC is far fetched, but in the interest of keeping time spent as the "family-tech-support" to a minimum, I am looking for ideas to lock a computer down to the ...
4
votes
1answer
73k views

How to resolve BackgroundContainer.dll error on startup?

When I start my desktop it gives me an error about BackgroundContainer.dll. How to get rid of it? I found nothing when i started regedit.exe and searched (F3 or CTRL+F) for BackgroundContainer.dll ...
87
votes
15answers
55k views

Can AVI files contain a virus?

I'm downloading an AVI file via a torrent, but my anti-virus detects something. Is it possible that the AVI file contains a virus? It is quite weird since the torrent has many positive reviews.
68
votes
13answers
12k views

How is Linux not prone to viruses, malware and those kinds of things?

How is Linux protected against viruses? This question was a Super User Question of the Week. Read the blog entry for more details or contribute to the blog yourself
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votes
9answers
6k views

UAC being turned off once a day on Windows 7

I have strange problem on my HP laptop. This began to happen recently. Whenever I start my machine, Windows 7 Action Center displays the following warning: You need to restart your computer for ...
7
votes
5answers
99k views

How to restore Windows Firewall after some malware deleted its service?

Yesterday I visited some web site, and apparently got infected via some Flash exploit. Microsoft Security essentials immediately kicked in, and displayed a warning about four items: > ...
19
votes
6answers
1k views

Should I worry about malware on Linux? [closed]

I don't run an antivirus on Linux ( most people I don't AFAIK ) and I'm not at all concerned about any form of malware or spyware or any other_bad_ware. Should I by concerned? Of course I don't ...
4
votes
4answers
14k views

How to remove a rogue extension labelled “Installed by enterprise policy”

I found a rogue extension (likely malware?) that I cannot removed, as the delete icon is greyed out and the extension says "installed by enterprise policy". I have tried running Spybot Search and ...
3
votes
2answers
11k views

How to manually edit the search providers in Windows Internet Explorer 9

On a Windows 7 system, the search provider has been hijacked, and keeps prompting us to change it when Internet Explorer 9 starts up. It brings up the Manage Add ons dialogue, and we can click on any ...
3
votes
4answers
773 views

Virus / Malware: Explorer window with strange user logged into Hotmail [duplicate]

Possible Duplicate: What to do if my computer is infected by a virus or a malware? I was looking into a PC, the user of which had complained that he couldn't connect to the internet and ...
6
votes
1answer
2k views

Windows 7 UAC (user access control) is being disabled on every reboot

To put it simply, I noticed UAC was disabled so I enabled it. I was prompted to reboot the computer for the changes to take effect. Upon my reboot I checked the settings again as I hadn't disabled UAC ...
59
votes
6answers
4k views

Is there a point in installing antivirus on Ubuntu?

I have recently started using Ubuntu. I am wondering about the point of installing antivirus programs on Ubuntu. On SuperUser, I found the opinion that it only detects "windows viruses" and removes ...
24
votes
8answers
14k views

Linux keylogger without root or sudo! Is it real?

Somebody on Youtube claims to have a keylogger on Ubuntu that was neither executed nor installed as root. The link below shows a demo of it working. http://www.youtube.com/watch?v=Y1fZAZTwyPQ ...
22
votes
3answers
5k views

Is it possible to store arbitrary data in an image file?

Is it possible to store arbitrary data such as documents or a program in the form of an image file, such as a PNG image? My concern is that someone could encode data for use by malware into an image ...
4
votes
18answers
927 views

Is free security software as good as paid security software? [closed]

I mostly use free security solutions to protect my home PC, but I wonder if I would get better protection from a paid solution. I prefer the free software, since I can have multiple applications ...
1
vote
4answers
12k views

How do I clean up virus induced hidden files and disabled everything?

I'm working on a Windows XP computer that had the unfortunate experience of being infected by mal-ware that pretty much disabled everything. I was able to clean the computer using a combination of ...
14
votes
1answer
683 views

Why shouldn't we open an image in an email?

Most email clients do not display an image by default in the content of an email. But I don't understand this yet. How can displaying image job attack the computer?
1
vote
3answers
415 views

Virus…? Tons of people talking. Not sure where else to ask

I really wasn't sure where to ask this, here, gaming, stack overflow, it can fit into any of them but I'll post it here. Sorry if I'm posting in the wrong area. I was playing Half-Life just now and ...
-1
votes
2answers
3k views

Stubborn Startup Page - MyStartSearch - mystartsearch.com

Just earlier I opened IE to go check my emails, etc... but my startup page is not google anymore as it previously was. The startup page was instead some "mystartsearches" thing which I had not ...
9
votes
4answers
762 views

Is it possible to safely contain a virus - not letting it spread?

I need to run a program, but I don't trust the author. I think it is infected with spyware or viruses, malicious files. I scanned it, did n't find anything, but still not feeling good about it. So I ...
6
votes
3answers
2k views

Can a computer be infected by malware through web browser?

Can a computer be infected when it accesses a malicious web page? Why is not a web browser 100% safe? What web resources, such as Java Script, Flash or a HTTP connection, can infect a computer?
3
votes
1answer
851 views

Is it possible to find the origin of a virus?

Is there any method with which you can determine the origin for a given piece of malware in Windows? One of my PCs was recently infected with the PWS:Win32/Zbot.gen!AP password stealing trojan. Is ...
3
votes
5answers
4k views

I can't open/ping any antivirus sites

I have a problem with a virus in windows 7, I don't know what kind of virus is infected my OS, I installed kasersky antivirus, and clear all detected viruses. After that I can't open any antivirus ...
3
votes
6answers
894 views

How did my computer get compromised?

How is it possible that my up to date install of Windows 7 with UAC enabled and Microsoft Security Essentials running became compromised, seemingly in a website drive-by? I've run ostensibly the same ...
3
votes
7answers
4k views

What to do about counterfeit Windows warning

I have a Dell computer that has just started waring me that Windows XP may be counterfeit, the operating system was pre-installed on the PC by Dell. Can I just ignore/disable the warning, or should I ...
1
vote
1answer
367 views

What is 1UnHooker.sys?

I'm still searching for a solution to my problem as I stated in my previous question (UAC being turned off every time Windows 7 starts (once a day)). Today, a program called SpyHunter found an unknown ...
0
votes
0answers
28 views

Prefetcher in registries

I`m working on a malware & found the malware modifies these registries: HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Prefetcher\TracesProcessed: 0x00000086 HKLM\SOFTWARE\Microsoft\Windows ...
0
votes
1answer
484 views

Google Chrome page is infected by the Ukash virus

I have a Samsung Chromebook. On the Google Chrome page I can't get rid of a site called Ukash (some site masquerading as Europol or something). How can I get rid of it?
0
votes
1answer
183 views

Virus disguising as file

Can files be infected with malware and them running as soon as the disk their on is connected/when their opened(Im talking for files like mp4/mov/avi, pngs(images generally) and compressed zip,tar.gz ...
101
votes
15answers
9k views

How can I fix a computer that is infested with malware and is extremely unresponsive? [duplicate]

Possible Duplicate: How do I get rid of malicious spyware, malware, viruses or rootkits from my PC? I'm troubleshooting a Windows 7 PC for a friend. A couple of days ago it started running ...
20
votes
8answers
3k views

How can I identify malware containing Chrome extensions in Linux?

I seem to have been infected by malware. Specifically, every now and then (once every few days usually) I get redirected to a page that asks me to download something, usually a "new version of Flash". ...
19
votes
4answers
2k views

What are ways to prevent files with the Right-to-Left Override Unicode character in their name (a malware spoofing method) from being written or read?

What are ways to avoid or prevent files with the RLO (Right-to-Left Override) Unicode character in their name (a malware method to spoof filenames) from being written or read in a Windows PC? More ...
6
votes
3answers
1k views

Worms vs Virus what's the difference? [closed]

I don't understand very well the difference between viruses ans worms, it seems that worms don't need any host to duplicate himself. But somebody can explain it? It means that a worm IS a soft? and ...
5
votes
3answers
2k views

Is there still need for codecs in Windows 7?

Aren't modern OS already packaged with the basic and most used codecs? Is there any reason to install a codec pack on a Windows 7? What are those reasons? Where can someone look for safe codec packs? ...
2
votes
2answers
194 views

Log application changes made to the system

Windows 7, 64bit. I have an application which I don't trust but still need to run. I would like to run the installer of this application and later on the installed executable under some kind of ...
6
votes
6answers
89k views

MacKeeper has hijacked my Safari Browser

MacKeeper (http:// mackeeperapp.zeobit.com) has hijacked my Safari browser. I have had to open Firefox, in order to get to the internet. I would rather use Safari, since that is where my bookmarks ...
5
votes
6answers
7k views

Rock-solid hardening of a Windows 7 system?

I am historically a Linux guy, and only use Windows when I absolutely have to via VM. However, I recently purchased a new rig so that I can keep a dedicated Windows 7 machine up for hard work ...
4
votes
2answers
448 views

How to remove BUYUNLOCKCODE Ransomware

A ransomware appears to have been circulating for the past few weeks. the data files will be encrypted and a BUYUNLOCKCODE.txt ransom note will be created in all directories where a file was ...
4
votes
0answers
237 views

Suspicious NetBios Name Service traffic

A friend of mine recently complained about the very bad performance of the Internet connection over her family's LAN. Apparently the Internet connection worked normal most of the time but certain ...
3
votes
1answer
15k views

How can I safely close this window and forever avoid seeing similar pop-ups from Mackeeper Zeobit's malware and spyware?

The attached image shows a window that just popped up and the only button available is the OK button. I could Force quit Safari, but I've got several sites open right now and don't want to try and ...
3
votes
3answers
19k views

Is there a way to find rootkits on 64-bit Windows 7

I was at work and got a help desk call about a rather severe malware infection and it got me thinking about my own computer. I am running Windows 7 64-bit RC1 on my everyday laptop. I run ESET ...
1
vote
2answers
661 views

How does Antimalware Doctor infect computers?

I didn't do anything stupid like run random .exe or visit questionable websites, but as I was just Googling I get infected by Antimalware Doctor. At that point I just shutdown my computer and ...
0
votes
1answer
58 views

I think somebody has access to my computer

Yesterday I received emails from Origin (EA) saying that my password, email and username were all changed. Not having done that myself, I reverted the changes, called EA security, set up a 2-step ...
0
votes
1answer
501 views

Weird popup ads on sites that don't even load the ad

I have noticed weird popup ads appearing on pages which don't load those ads like daringfireball. The ad in question appears on the right side of the page over the web page intended to open. The ...
0
votes
5answers
2k views

Impossible new virus [duplicate]

Possible Duplicate: What to do if my computer is infected by a virus or a malware? I have been hit by an absolutely impossible new virus. Only in the past 3 months or so the internet has ...
6
votes
2answers
501 views

Mysterious notepad.exe spawned every morning

Since a couple of weeks, when I sit down in the morning and unlock my PC at work, I see a notepad window, complaining that it "Cannot find c:\oracle.message.txt". This is quite unnerving - I thought I ...
5
votes
6answers
11k views

Chrome works only outside of sandbox?

I have been trying to solve this problem for a long time. I have been using Chrome for more than 4 years, it is the best browser for me. Suddenly, Chrome stopped working. I tried uninstalling it and ...
4
votes
7answers
3k views

How to clean a computer with multiple accounts infected with spyware, viruses? [duplicate]

Possible Duplicate: What to do if my computer is infected by a virus or a malware? What's the best way to clean a computer with multiple accounts infected with spyware, viruses and malware? ...
3
votes
2answers
2k views

Dexpot carries malware?

Dexpot appears to have a lion market share as far as virtual desktop managers go. It also seems to have a rep for adware/bloatware or worse; at least the dexpot.de site does: ...