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

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3
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2answers
692 views

Is it possible to get malware through an incoming video/audio stream? (e.g. Omegle, Skype etc.)

just a quick question. Is it possible for incoming video/audio streams to contain malware etc. through exploits in the transfer of the video/audio? Thanks in advance.
0
votes
1answer
139 views

Opening mail without any risk [closed]

Before opening unknown email (not in spam folder) how we can identify no any danger inside the mail (with availability of active virus guard)
20
votes
3answers
4k views

How can I tell if I have the citadel virus without downloading an antivirus?

I recently received an e-mail from Virgin Media indicating that I might have the Citadel virus. It obviously sounds like a fake e-mail, but I am almost certain it is genuine, as they had my name and ...
2
votes
1answer
277 views

Is there anyway to easily decipher this virus code?

My server was attacked (I cleared the infection - as far as I know) and I want to know what, if anything, might have been compromised (like my user data, for example). I posted my last question on ...
2
votes
1answer
391 views

Securely erasing USB flash drives from a bootable media

My question refers to securely erasing viruses from the usb flash drives, including the MBR, in case there is one. I was thinking of booting with Linux from a closed CD-R (a cd rather than USB flash ...
0
votes
3answers
6k 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 ...
1
vote
2answers
7k views

Can I have a virus/adware in my router?

When I browse the Internet (in any browser), there are extra ads. I thought it could be on my computer, tried Ubuntu live disk, and even there were these ads. Same ads are on my iOS and Android ...
2
votes
0answers
81 views

Determine in which process a virus is hiding [closed]

My computer got one of those Recycle bin viruses, e621ca05.exe. It's an old installation of Windows XP and I can't even enter safe mode because it was in a shaky state already. So I can't follow the ...
1
vote
1answer
317 views

backdoor php trojan still dangerous on my local machine?

I recently removed and fixed a lot of backdoor trojans in some files in one of my servers, and I copied those files to my local computer. But the issue is that now that I run the virus scanner on my ...
12
votes
2answers
6k views

Sites being redirected to adult site in all devices [closed]

From past couple of days, we are facing this issue where sites are automatically being routed to an adult site, although we get a 404 Not Found HTTP error. First guess is obviously that my system is ...
1
vote
2answers
432 views

Hidden Malware on a windows OS able to startup [closed]

How do hackers hide there malware on windows, to startup and be impossible to find then delete. The results I found that a hacker can use to hide his malware: (found here) Windows: Setting hidden ...
2
votes
0answers
128 views

Remote accessed? [closed]

I'm not an IT professional but I'm hoping someone will take the time to answer this. I'm not generally such an idiot but this happened: I was using Ancestry.com on Chrome and clicking links within ...
2
votes
0answers
87 views

Are old Android WebViews a risk to Activesync email, and how do I block old devices?

I'm concerned that old versions of Android may be hacked through unpatched WebViews (in PhoneGap and other apps), exposing Activesync email data, and other sensitive information. To mitigate this, ...
1
vote
1answer
308 views

I think i might have accidentally clicked a phishing link, how can i be sure? [closed]

Long story short I might have accidentaly clicked a phishing link is there any kind of test I can do or anything I can do to check?
0
votes
1answer
381 views

What does this malicious JavaScript code do? [closed]

I got this by email this morning before my brain woke up and I clicked on it. Does anyone know how bad this is? It gave me an out of stack space error when I ran it. var listing="...
-2
votes
1answer
146 views

Stuxnet - The background functions [closed]

Stuxnet was a clever worm that aimed to malfunction programmable logic controllers on nuclear networks (Iran was the most affected). Nuclear networks were private networks, not supported on Internet ...
12
votes
3answers
2k views

FTP hacked, planted file [closed]

Can anyone help me to understand what this does? Someone has planted a file with this piece of code on my server.It is shortened because it cannot fit the question, but just to have some idea what ...
0
votes
1answer
202 views

Possible virus hogging bandwidth [duplicate]

My computer might have a virus infection. I have used Norton Internet Security and Power Eraser to scan the computer but it still did not work. The traffic on my PC looks like this I used resource ...
-3
votes
1answer
171 views

What is the most successful virus/rootkit? [closed]

"Successful" is rated by infection rate. Which virus/rootkit/malware has been able to infect the most computers globally?
1
vote
5answers
641 views

How can I stop this remote attack?

Someone appears to be logging into my machine remotely, I am running Avast anti virus with Comodo Firewall both report no attacks.I only noticed this because on my router security logs I see the ...
0
votes
1answer
69 views

Can standalone malware survive on current mobile devices? [closed]

Can malware run on mobile devices? I don't see how it would be able to (given that those devices have fine-grained permissions and sandboxing). Unlike on a desktop OS, malware cannot access registry ...
1
vote
2answers
4k views

Does Dropbox offer any protection against infected files? [closed]

Does Dropbox offer any protection against sharing files which are infected? To give more info, my friends and I are currently working on a college project. We find it much more convenient using ...
-5
votes
2answers
123 views

When using software to infect others, how are hackers them selves not infected? [closed]

I assume all hacking software (password cracker, R.A.T. etc...) are infected. So the hackers using it are probably hacked too, right ?
0
votes
1answer
238 views

How can I tell if my client has been infected with CryptoWall?

Today a client ran a file they believed to be something else, they said a black window appeared, so I checked the code to see what it ran in CMD, but can't quite work out what it's doing. I've just ...
1
vote
1answer
138 views

using multiple Firefox profiles to increase security

I am wondering whether it would increase security in any significant way, if I would use two separate Firefox profiles, one for normal browsing and the other for private/secure websites, such as my e-...
2
votes
2answers
234 views

Determining safety of Android APK executable that requires root

On my request, a developer gave me a new version of his Android app to test. The app requires root permissions. I do not know the developer personally. I have no specific reasons to trust or ...
9
votes
2answers
1k views

Are there / have there ever been viruses that completely evade virus scanners for very long?

Are there, or have there ever been viruses that completely evade all virus scanners for a long time (e.g. longer than a year?)
0
votes
0answers
120 views

Protection against Bad USB not working for me

Protection against bad USB as described in this thread by user 10008 in the top voted answer is not working on my PC at the moment. I tried it when trying to install Ubuntu from a Live DVD to a USB ...
2
votes
1answer
3k views

Can a file .exe.part already have caused damage?

If on a Windows machine, an antivirus program has found a Win32:Rootkit in a file ...\Temp\...\xy.exe.part, could the file possibly already have caused damage or not given that it seems to be an "...
3
votes
2answers
293 views

I ran a virus on a PC. What should be the next steps?

I wanted to remove a probably malicious executable, but instead inadvertently double-clicked on it while using an account with administrative privileges. Nothing visible happened during a few seconds, ...
-1
votes
3answers
2k views

How to make undetectable malware [closed]

Fred Cohen in 1986 has proved in his Ph.D. thesis the undecidability of viral detection (no perfect virus checker can ever exist). My question is : Is it possible for a malware to stay very long time ...
16
votes
3answers
8k views

Do I really need an Anti-Virus software if I'm careful about where I browse?

A friend told to me the following: I don't use Anti-Virus software at all, I am just careful about where I go and what I click on. I've also heard this from other people as I've repaired their ...
13
votes
3answers
992 views

remote desktop connection to a potentially compromised machine

I am using rdesktop client on Linux to connect to windows machines. If some of these machines were compromised by some evil malware/virus/worm/trojan, is there any way for the malware to "jump" to my ...
10
votes
4answers
1k views

What is Net-Worm.PHP.Mongiko trying to do?

I found several lines of this request in my web server access log: Source IP Dest IP Request Stat User agent 217.172.190.19 1.2....
3
votes
2answers
931 views

How to deal with resistant malware

Everytime I visit Gmail, Facebook, YouTube, or Yahoo mail, I get a popup "Please update Internet Explorer" (while I'm using Chrome!). I don't have screenshots but this website describes the problem. ...
0
votes
3answers
115 views

How an experienced user decides a download is safe? [closed]

I am new to computer security. I was wondering what an experienced information security user would do when inspecting a file for potential download. Obviously, it would be very difficult to look ...
5
votes
3answers
602 views

PHP | Security for allowing user uploads

My Sittuation: I am creating a web application with PHP which allows users to scan their files for viruses. It allows the user to upload their files via the html "file" input type or via a URL. I ...
0
votes
1answer
767 views

How exactly do viruses get on computer when watching online porn? [duplicate]

I've been hearing that your computer could get infected when you visit porn sites, especially when watching videos. But how exactly do viruses get on client side? Is it by cache? Or maybe by ...
2
votes
2answers
774 views

How exactly do you infect the firmware of a hard drive? [closed]

Now that we are told that infecting firmware has been done in practice, how exactly does this work?
2
votes
2answers
88 views

Virus - by-pass with binairies repackaging

Why don’t « hackers » (or more accurately, « virus maker ») just do repackaging over their malware to by-pass antivirus software? Because it resolves the issue of the virus signature (kind of hash), ...
-6
votes
1answer
134 views

IVE BEEN HACKED! [duplicate]

So i downloaded an application that was fishy that came out a couple hours ago on youtube and i was stupid and didnt scan it or anything and i let it run... blam instant security warnings and i ...
0
votes
2answers
8k views

What is the meaning of .ini file in startup folder?

Now my windows 7 is too slow and crashing usually. I checked the start up folder. I get a file with extension .ini. The content of file is [.ShellClassInfo] LocalizedResourceName=@%SystemRoot%\...
5
votes
4answers
890 views

How to keep Mac secure from viruses, malware and keyloggers?

How can I download and install software and make sure that it is not infected with viruses, malware or a keylogger? Also, I heard that Macs "don't get viruses". Is this true? Is it a good practice to ...
23
votes
4answers
7k views

Are popular porn sites more likely to be infected with malware?

I'm trying to help my friend understand this because he believes that since a site is very popular, that it's less likely to infect its viewers because of its security! Is a popular site less likely ...
1
vote
2answers
158 views

Is the convertomp3.com website hacked? :) [closed]

I wanted to convert a youtube video to mp3, but the website gaved me an EXE? http://convertonmp3.com/download/412414/The_Supermen_Lovers_feat_Mani_Hoffman_Starlight_Official_Video.mp3?h=...
5
votes
3answers
6k views

Can malware physically damage a hard drive?

I recently responded to an incident of supposed malware infection. The symptoms were simply, "My computer freezes at random times." The response ended with replacement of the physical hard drive and ...
0
votes
5answers
242 views

how to know that my pc is 100% clean?

I work as a programmer ,i want to make sure that no remote access tools RATS are on my pc before i work on my new project. it happened before that after finishing a hard project, a hacker went on my ...
0
votes
0answers
163 views

How to test backend virus behavior?

I have a website that allows the user to upload files. The front-end (web tier) checks the file extension and first few bytes of the file for the magic number of an acceptable file, but then ...
2
votes
2answers
204 views

Is it safe to store a file in a temporary folder before it has been scanned for a virus?

I'm working on an application that makes use of the Symantec Protection Engine to scan uploaded files. I'm having issues with my files after they have been scanned. One possible solution I've seen ...
1
vote
1answer
120 views

Has this method ever been used by viruses to check if system has already been infected?

I know the era of the self spreading worm is over, but has this mechanism for determining if a machine has already been infected or not ever been used? When a virus runs it checks to see if the ...