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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How can I remove malicious spyware, malware, viruses 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
15answers
8k 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 ...
95
votes
23answers
12k 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 ...
76
votes
15answers
43k 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.
61
votes
13answers
10k 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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6answers
3k 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 ...
28
votes
5answers
2k views

php.net listed as suspicious - visiting this web site may harm your computer

When I access php.net through Google search i get the following message saying The Website Ahead Contains Malware! See the screenshot attached below: Is it same for you guys? How can I avoid ...
25
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9answers
3k views

Why is it bad for me if my computer is infected, if I don't notice? [closed]

The situation I face is a family member whose position is the following: I don't want to update something that works, updates may break something. Look at our old computer that runs Windows 98, ...
24
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3answers
4k views

Still receiving windows XP updates… Is this expected behavior?

According to the answer on another post, we should not have been receiving any more updates for Windows XP. But I am receiving updates: Is this indicative that my system is bugged or compromised ...
23
votes
2answers
13k views

What is JavaScript Obfuscation and why is it a threat?

AVG was recently telling me that a webpage was blocked because of JavaScript Obfuscation. Why was the webpage blocked and what exactly does that mean?
22
votes
7answers
11k 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 ...
19
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3answers
3k 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 ...
19
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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 ...
19
votes
8answers
2k 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 ...
18
votes
5answers
819 views

Chrome bug, got malware or did I did I break it?

I was developing my site when a strange banner appeared. First I thought it was my fault, then that it was the webhost provider fault and now I have no idea of where this comes from. I know it looks ...
18
votes
1answer
2k views

Why do I have two desktop.ini files on my windows 8 desktop?

When I try to delete one of these two shortcuts, a message appears saying, "If you remove this file, Windows or another program may no longer work correctly."! I don't think that it is possible to ...
14
votes
1answer
634 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?
13
votes
4answers
2k views

Are On-Screen Keyboards Really More Secure?

A quick question: I use on-screen keyboard when entering my bank passwords, credit card numbers, etc., in an effort to guard against malware. Is this a good idea or am I wasting my time? Some internet ...
10
votes
2answers
938 views

What can a service do on Windows?

What kind malware/spyware could someone put into a service that doesn't have it's own process on windows? I mean services that use svchost.exe for example, like this: Could a service spy on my ...
10
votes
2answers
3k views

How can I determine what process a window belongs to?

Every time I start up windows vista lately, I see a random floating window. It is a tiny little window with no title, and only the resize, maximize and restore buttons. I'd post an image, but I don't ...
9
votes
4answers
715 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 ...
9
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4answers
2k views

What is the purpose of malware?

I've seen all sorts of speculation on why malware is created and distributed, but is there any hard evidence of what exactly it does and why? Please point me to any online resources.
8
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1answer
348 views

Ever heard of a Windows service called 'darkness'?

Is it a malware? The computer has been diagnosed with some viruses. I've tried looking here but haven't found any information about it yet.
7
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3answers
2k views

Has my Google Chrome gone scareware?

I can't visit http://www.opengl.org on Google Chrome 6.0.472.63 without the Malware Detected warning Warning: Visiting this site may harm your computer! The website at www.opengl.org ...
7
votes
9answers
152 views

Is it dangerous if I store a copy of an infected website on my local disk?

First, I'm not into HTML and PHP programming. A friend's Joomla site was hacked by some sort of html injection, and now every php and html file has an iframe which is linked to some sort of malware ...
7
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2answers
2k views

How to scan and detect spying software

I have a friend who caught his landlord in his apartment using his laptop (he moved out afterward). The next time he tried to log in, his password was changed. I fixed the password problem but I got ...
7
votes
4answers
416 views

How can I be in danger from viruses and malware?

I have been reading here (in superuser) some questions about the necessity of antivirus software in Windows and some doubts arise. As far as i know (and imagine) virus software can only be harmful if ...
7
votes
8answers
5k 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
6answers
5k views

Download Virus/Malware Purposefully

Where can I download a virus, work, trojan, etc. for analysis? Yes, I'm actually hunting for malware, rather than keeping it at bay and hiding behind antivirus software and firewalls. I plan to ...
6
votes
3answers
1k 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?
6
votes
5answers
235 views

Preventing malware from sniffing the sudo password

I often hear people citing sudo as one of the main barriers to malware infecting a Linux computer. The most commen argument seems to go along the lines of: Root privileges are required to modify ...
6
votes
4answers
89k 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: > ...
6
votes
2answers
370 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 ...
6
votes
3answers
2k views

How do I tell if there are unwanted remote guests on my computer? [duplicate]

Possible Duplicate: What to do if my computer is infected by a virus or a malware? Why do I always find the strangest programs and the strangest text files all the time? All kinds of weird ...
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 ...
6
votes
5answers
389 views

Could it be a malware?

Something makes all browsers on any operating system or computer of my home network to open random web pages and ask to install a Microsoft protection of some kind, what could do that? It send random ...
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 ...
6
votes
1answer
9k views

All program groups in Windows XP show “Empty” after malware infection

I'm trying to repair a Dell laptop running Windows XP SP3 that was infected with a variation of fairly typical malware that makes a user think a virus was detected and prompts them to go purchase a ...
5
votes
2answers
3k views

How to resolve BackgroundContainer.dll error on startup?

When I start my desktop it gives me an error about BackgroundContainer.dll There was a problem starting c:\Users\Ventsislav\AppData\Local\Conduit\BackgroundContainer\BackgroundContainer.dll ...
5
votes
7answers
13k views

How can I safely open a suspicious email?

Suppose I receive an email that I highly suspect is some form of spam but I'm not 100% sure. Suppose also that I'm using form of webmail (like Gmail) with good spam filters, but this message made it ...
5
votes
6answers
61k 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
4answers
280 views

Verifying that open source software hasn't been tampered with

I'm about to download some OSS software, and I would like to ensure (with a reasonable degree of certainty) that it hasn't been tampered with to insert malware. Specifically, it's a password manager ...
5
votes
4answers
1k views

How do “Powerusers” manually find and remove malware from Windows [duplicate]

Possible Duplicate: What to do if my computer is infected by a virus or a malware? I'd like to know what tools and methods are used by the pros to remove malware in Windows. Is HijackThis ...
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? ...
5
votes
2answers
9k views

How to scan and remove MBR viruses?

Once I read that the Windows 7 installation disc could clean an infected MBR. I also found an article that suggested one tool to scan the MBR for viruses. And I also read that one MBR virus could ...
5
votes
4answers
2k views

“Stop running this script?” — is this legit?

I get this popup: It looks rather suspicious since it refers to "web browser" rather than a specific product, and doesn't offer any other details or identifying information. I've tried to figure ...
5
votes
1answer
109 views

Is this an error or a malware?

I'm running Windows 7 64 bit. Yesterday I asked this question. No need to read it. Right now, my anti virus, detects no virus however I am experiencing 2 issues: When i start windows, the screen ...
4
votes
18answers
885 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 ...
4
votes
6answers
5k 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 ...