A computer virus is a program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes.

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2answers
97 views

What is the difference between a virus and a worm ? [duplicate]

The only thing I know is that virus can get into the other programs and infect it whereas worms cannot attach itself to another program.
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1answer
2k views

Can virus save to SIM Card?

(Before everything excuse me because of me English) Today one of my friends asked me about his Nokia 130 Dual SIM. There was a problem about Short Message System. No Messages were sent from that ...
3
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2answers
3k views

Is there any decompiled source code for the “Flame”/“Skywiper” malware?

When searching for the source for Stuxnet, its relatively easy to come by in one form or another. Although I'm actually curious if anyone has done any work to comment the source and perhaps clean up ...
1
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0answers
39 views

Why an infected VM does not affect the host machine? [duplicate]

I installed a Windows XP virtual machine on VirtualBox. The host machine is also a Windows XP. I run 5 viruses on the guest machine, however this does not seem to infect my host machine. Could someone ...
0
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3answers
1k views

Is there any virus that can cause physical damage [duplicate]

Like damaging a chip on the motherboard, increase the fan's speed till something explodes or anything similar to that. I am not an IT guru but I never came across a malicious code that couldn't be ...
3
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4answers
499 views

How do I ensure that my computer is 100% worm-free?

Ok say I have a brand new laptop that was is brand new. Is it true to say that as long as I keep the bluetooth turned off, and I am not connected to the internet, and only copy files that are 100% ...
1
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2answers
334 views

Does the EICAR test work on Linux based antivirus scanners?

Does the EICAR antivirus test work on antivirus scanners for Linux? The EICAR test is described in more detail here: http://en.wikipedia.org/wiki/EICAR_test_file The reason I ask is that it requests ...
38
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7answers
7k views

Does a virus need to be clicked on to function?

Can a virus infect my Windows XP operating system by its mere presence? I mean, if I copy/paste a virus on my computer and I never click on it, will it infect my computer or will it remain dormant, ...
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1answer
97 views

Unrecognizable Icon. Virus?

Sorry I'm not sure this would be the best place but I've noticed this icon recently. I'm not sure what it is and it only pops up sometimes. When it does, I can't click it or do anything to it and it ...
1
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2answers
156 views

Buzzfeed just downloaded a binary file to my PC, unasked

The file is binary, named '96748', and it's 12.8kb in size. Ubuntu thinks it's an swf. Thank god I was in a Linux VM and not Windows. It doesn't seem to have done anything, and it's just sitting there ...
2
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2answers
336 views

Are there any logic-bombs that execute when the file is deleted?

I want to delete a suspected malicious file from a server. For the purposes of this question assume that the infected machine is Windows Server 2003 or later. Is there any risk in deleting such a ...
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1answer
103 views

Problem in downloading and browsing [closed]

My downloads stop completing and some page in the browser appearing blank or with text only without css or js and so on, some program after complete return me a message when trying to start ...
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3answers
1k views

Is JavaScript malware as dangerous as native viruses? [closed]

Can JavaScript malware be as dangerous and damaging as more traditional viruses that are programmed mostly in native APIs?
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1answer
3k views

Virus affecting MS Office files

(I'm not sure if here is correct place for asking this question) I've come across a strange virus that changed contents of all MS Word, Excel, PowerPoint and image formats. It places this ASCII ...
17
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7answers
827 views

How to deal with a person who gets easily fooled by internet and mail scams?

alternative title: How to deal with a person who has gotten paranoid and doesn't want to go online anymore? A person, who has over the years been scammed many times, by bad spam/fraud emails, and ...
1
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3answers
264 views

How isolated are 2 operating systems on 1 harddisk?

Lets say I have 2 windows dual booting on the same harddrive (windws 7), How isolated are they? I am thinking that there should be up to date antiviruses software on both Windows, and they should be ...
7
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2answers
247 views

How serious is a local virus in terms of network security

My colleague got a notification on his machine of a possible virus (through the virus scanner that is installed by default on all machines). He called up the tech department, and they simply told him ...
0
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1answer
205 views

How safe is virtual box without internet [duplicate]

I am running a windows 7 virtual box without internet connected. Internet is, however, connected to the host, and I allow any internet access to and from the host. On the guest platform I am working ...
35
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4answers
15k views

Should I get an antivirus for Ubuntu?

Considering the recent thread regarding anti-virus for the Mac I wonder how many of the arguments put forth are relevant today to Linux systems, specifically Ubuntu. There are no known Ubuntu ...
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3answers
84 views

Completely Protected Virtual Folder

I am a Python / C developer currently working on a extremely important piece of software. The details of the code will not be mentioned, and the only place the code appears is on my own hard drive, in ...
0
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4answers
155 views

Can a virus on the host affect the VM guest [duplicate]

let me explain my problem. The wifi on my macbook suddenly stopped working so tried to use my usb wifi adapter on a linux VM. But the funny thing is that nothing works on the guest vm either... Well ...
9
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3answers
266 views

How do I report new malware?

I have a new piece of malware that isn't detected by current anti-virus vendors. How do I report it to them? I want to do a good turn and help protect as many people as possible. What is the best ...
2
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3answers
106 views

Can viruses be transfered across incompatible architectures?

I am needing to run scans from one computer/laptop/device to another computer in a protected system. I am worried that plugging in my scanning computer to the protected computer might cause some risk ...
0
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1answer
98 views

How can I set up a secure virus laboratory? [duplicate]

I've been playing around with virtual operating systems for some time and began wondering: would it be possible to set up a virus laboratory in a virtual machine? If not, are there other ways that do ...
0
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1answer
1k views

How to backup files stored in a possibly infected computer?

I am to reinstall an old Windows XP installation. Before I format the drive, I have to backup some data (~200GB) like .doc files, pdfs, photos to an external hard drive. My concern is that this ...
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3answers
157 views

I need to know if this is a virus [closed]

Someone has been sending me these weird emails and I am starting to get curious about it. The latest one has an image of a broken image linking to this address... I wonder if you guys could help me ...
11
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7answers
3k views

Can viruses actually inject their code in other processes?

Can a virus really inject its own code into a process so it stays on your computer permantly? The only way to actually remove it is to reinstall your OS. My question is how can it do that without ...
2
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2answers
634 views

Is OSX vulnerable / susceptible to Gameover Zeus

I've heard a TON of vague info on Gameover Zeus recently. One detail I can't seem to find is if it affects OSX? when I say I can't find it I mean from a credible source. I've found loads of people ...
0
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1answer
32 views

Safely converting untrusted files with Microsoft Word in a web service

I'm made a small web service that gets urls, download them, and convert them for another format. Most of those urls are documents (doc, docs,...). Basically, I'm open them with MS-Word and convert ...
5
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3answers
677 views

Is there a hash algorithm that can identify similar files or strings?

Is there a hash algorithm that will help you identify similar files or strings? For example, the hash for ABC and XBC would be similar rather than radically different as is usually the case. I know of ...
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1answer
397 views

How can we find out the fully undetectable virus and kill it in our computer? [duplicate]

As I know, most hacker can crypt the virus to bypass all antivirus. Even famous antivirus like kaspersky and avast doesn't know it. So, is there a good way to find out the FUD virus and protect from ...
0
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1answer
41 views

process/program execution anomalies

How could I know if a given program is malicious by checking its CPU occupation, RAM consumption, network connexions, registry entries ... etc ? Maybe an other way to ask this question is: when could ...
0
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1answer
440 views

How to combat and prevent a lpcloudsvr302 and bk-coretag.js Virus?

I recently came across a computer that was infected with a lpcloudsvr302 and a bk-coretag.js Virus. I did some research about the two Viruses and realized that their is no reliable source that helps ...
7
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4answers
1k views

Is it safe to serve any user uploaded file under only white-listed MIME content types?

Let's say I develop an application that, Allows any user to upload a file of only white listed mime content type and extensions (word and pdf). Serves those files with the allowed extension and ...
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1answer
412 views

Computer worms, propagation and exploiting vulnerabilities

I have been referred here to ask this question, so I am doing a research on computer worms, I have been through several sites and a few caught my attention, I have learnt that worms propagate through ...
0
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1answer
416 views

How can the data in a computer system become corrupted when it is copied across a network? [closed]

Doing a report. Having trouble understanding the concept. I need to talk about the following topic in relation to: How can the errors be detected? Can they be detected and corrected? If so, by ...
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1answer
664 views

Website starting up on PC boot [closed]

today i boot my PC when i got home & a russian website about games & naked chicks openen up instantly during general boot of the desktop. I thought "WTF", shut down my PC and restarted it. ...
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3answers
138 views

Unknown hijacker/popups on the browser

I was cleaning my father’s laptop which was recently infected by a fairly tenacious piece of malware. It hasn't given any great clues as to what it is named or anything of that sort and thus far ...
2
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2answers
3k views

Can you write OS-related virus using high level languages like Python

It is a well known fact that OS-related viruses are commonly written in low level languages like C or C++ which require direct access to the kernel of the CPU , I am just wondering if its possible ...
3
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0answers
110 views

At what point does a piece of code become a virus and at what point does this become illegal? [closed]

I read a lot about viruses being illegal, but at what point does a piece of code become a virus and become illegal? Information enters and leaves our computers on a daily basis and often times some ...
0
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2answers
496 views

My website redirects to an unknown website [closed]

I coded my own website and uploaded to a host. Some days ago I realised that in specific page suddenly redirects to an unknown websites, until 3-4 redirects. The redirects are: mywebsite.com/smth-> ...
4
votes
4answers
2k views

Virus scanner on server

I see lots of people claim virus scanners are unnecessary on a linux server. But if this server accepts files uploaded from users (and lets others download them), does it become worth it to scan the ...
0
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1answer
5k views

How would I know if my Apple Mac has a virus, and what can I do if I have? [closed]

I have used PCs for most of my life, and I am very aware of the fact that they can catch a variety of viruses. I have owned a MAC now for two years, and have enjoyed a pleasant (perhaps too pleasant) ...
6
votes
3answers
480 views

Firewall says that a program that I'm developing is trying to connect to the Internet

I'm seriously confused about this, since the program is entirely developed by myself and has no means/functionality to connect to any network/the internet whatsoever. I'm a software engineer but not ...
16
votes
5answers
992 views

Why would a virus writer bother to check to see if a machine is infected before infecting it?

I was looking at the tripartite structure of a virus, and it seems to check to see if a computer is infected before infecting it with the virus. Would this be an attempt to use files that are already ...
2
votes
1answer
484 views

Clamav can't detect encoded virus files

I have a PHP sheller file (like c99 file) but it's Encoded ( with this functions: eval(gzinflate(base64_decode("7P3rehblahblah)) ) and the clamav virus scan can't detect it. How i can detect virus ...
3
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3answers
2k views

Self-Executing Files

I've always been curious about understanding how virus carry out their activities. For that reason, I've read a lot of books and articles about different types of viruses and the way they operate in a ...
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2answers
529 views

Is there a way to be 100% sure that your computer is clean of viruses?

If your computer has been hacked or infected, is there a way of cleaning your computer and have 100% sure that it's clean? I heard that you can safely clean your hard-drive with completely wiping ...
0
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1answer
141 views

Unknown Website Linking to my Local Files?

I recently discovered a website that I am in no way affiliated with linking to the files of my local website stored on an external hard drive. This unknown website is actually executing the scripts, ...
0
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2answers
67 views

Is there a point in restoring from backups if you don't know where the virus came from?

It's been happening more and more frequently I get viruses with no idea where they come from. I have recent backups, but I don't know if there's a point in restoring since I would just install the ...