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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2
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2answers
87 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
votes
0answers
50 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 ...
10
votes
8answers
2k views

Can malware be attached to an image?

I have a small number of employees who use a company computer but these people aren't very tech savvy. They use an email client and a messaging client. I'm pretty sure they wouldn't click on .exe or ...
0
votes
2answers
108 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-> ...
0
votes
1answer
88 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) ...
2
votes
4answers
565 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
votes
2answers
59 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 ...
1
vote
2answers
205 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 ...
1
vote
1answer
72 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 ...
0
votes
3answers
134 views

Malware stole an executable file on my computer? Seems unlikely

If you don't want to read all of the details, skip to the bottom; I'll make a summary. I created a computer program as a proof of concept (I threw it together in 12 hours, so I wrote it in Visual ...
0
votes
2answers
135 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
votes
1answer
130 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, ...
4
votes
4answers
380 views

Is it worth it to get paid anti-virus software?

With the rise in cybercrime, I am slightly worried about my computer security. I have been using open sourced anti-virus AVG for years and it has been doing well. Are anti-virus software like Norton ...
0
votes
2answers
64 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 ...
-3
votes
2answers
107 views

What kind of virus attack is this? And what do I do now?

I have just inherited a running wordpress installation from another agency and the theme (twentyeleven) they are using for my client has been corrupted. This is what most of the theme's php files ...
-8
votes
1answer
104 views

Viable way to ruin a milk corporation? [closed]

Hack into their system and change the "Sell by" date so that it is immediately bad. How long do you think until they notice, if you pull it off?
-2
votes
1answer
79 views

Examples of images causing buffer overflows? [closed]

I remember reading a news article of an incident where a hacker was able to use an image to infect thousands (maybe millions?) of computers. Can anyone provide links to such news articles? I couldn't ...
1
vote
0answers
97 views

Problem with qgankgyefx..vbe virus

I am not sure if I am in right forum. But i am having problem with this virus. On affected computer, If we use a USB drive, all the file become hidden. I am using HFV.exe for retrieve all data in ...
0
votes
1answer
69 views

Self-changing javascript characters in text editors

On Windows Server 2008-R2, certain javascript files are exhibiting the same behavior. Text can be copied from other files and pasted into new ones. In both NotePad++ and Windows' default notepad, ...
1
vote
1answer
178 views

Detecting Malware in the android App [closed]

I've been given an APK file, and before re-distributing to the "market" I want to make sure the given android app does not contain the malware. How can I do that ? Business use case is similar like : ...
0
votes
1answer
37 views

Photo Attachment's Feature For Some Mail Servers [duplicate]

You already know google started new service which is related to gmail. http://gmailblog.blogspot.com/2013/11/attachments-in-gmail-now-with-power-of.html When we send new mail to friends.If it ...
1
vote
2answers
90 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 ...
0
votes
1answer
161 views

Which Antivirus Software used to remove virus Rootkit.Sirefef.Gen?

My System has affect Rootkit.Sirefef.Gen Virus. So i want to know which antivirus software is used to remove Rootkit.Sirefef.Gen virus file.
3
votes
1answer
266 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 ...
2
votes
3answers
341 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
507 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. ...
0
votes
1answer
94 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
86 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?
2
votes
2answers
218 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 ...
1
vote
2answers
815 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 ...
2
votes
3answers
307 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 ...
3
votes
3answers
374 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, ...
3
votes
4answers
11k views

Scanning for files than have been encrypted by CryptoLocker

I am just asking in case someone has already done the analysis. A customer has a large set of network drives that were mapped to a CryptoLocker infected machine. The infection itself has been treated. ...
5
votes
1answer
358 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
vote
3answers
155 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
votes
0answers
36 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 ...
1
vote
0answers
329 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 ...
1
vote
2answers
740 views

Statistics about malware targeting different OS

Are there any reports or statistics that describe the numbers or types of malware attacks on different operating systems, such as Linux, Unix, Windows, MacOS?
0
votes
2answers
100 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
496 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
224 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
158 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: ...
0
votes
1answer
100 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
1answer
211 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 ...
0
votes
3answers
414 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 ...
1
vote
1answer
175 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 ...
1
vote
3answers
278 views

Text changing virus

Can malware change words that I have typed and then saved in the computer'? If so, how likely is this?
2
votes
1answer
1k 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
0answers
22 views

Creating unnecessary shortcuts on flash drive [duplicate]

Recently my computer has been infected by a strange kind of virus(may be) that hides all the files and folders of flash drive and created the shortcuts to them instead. The shortcuts are though ...
5
votes
2answers
1k views

How can a malicious URL affect a computer?

Many security experts advise not to click on malicious URLs. How can clicking a URL affect a computer's security? If a malicious file was downloaded and executed, then a computer's security may be ...