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  • Linux based Anti-virus for windows

    - by Manish Mathai
    Hi. I am currently running Windows XP along with Ubuntu 9.10. Is there any anti-virus which can scan for windows viruses , from ubuntu ? I had tried ClamAV sometime back. It didn't work very well. Is there any other alternative ? Preferably a free one :)

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  • Long held AJAX connections being blocked by Anti-Virus

    - by jeffreyveon
    Ok, this is downright bizarre. I am building a web application that relies on long held HTTP connection using COMET, and using this to stream data from the server to the application. Now, the problem is that this does not seem to go well with some anti-virus programs. We are now on beta, and some users are facing problems with the application when the anti-virus is enabled. It's not just one specific anti-virus either.. I found this work around for Avast when I looked online: http://avricot.com/blog/index.php?post/2009/05/20/Comet-and-ajax-with-Avast-s-shield-web-:-The-salvation-or-not However, anyone here has any suggestions on how to handled this? Should I send any specific header to please these security programs?

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  • How do I find information about a particular trojan? "W32/Smalltroj.XVGT", as reported by Norman

    - by Lasse V. Karlsen
    I tried checking the Norman antivirus page, Virus-descriptions, but sadly it seems Norman has intentionally obfuscated their search results (I tried clicking on W, and it seems they just list viruses with a W somewhere in the description, instead of more typical, all viruses with a name starting with a W.) Is there a common virus-list somewhere, or is it as I suspect, every antivirus manufacturer is free to come up with their own identification tags for each virus? Several "vshost32.exe" files, related to Microsoft Visual Studio 2008, has been quarantined on our server today, probably related to a test-deployment of some internal software. Some developer machines that have grabbed that latest version of our program has also had the same files quarantined. Now, these files should not have been deployed in the first case, so I'll be looking into that, but whenever any developer now builds a program locally and attempts to debug, the same file is placed in the build output directory, and promptly quarantined. Does anyone have any clues as to how I can go about verifying this before I pointedly ask the antivirus software to go take a hike on this particular virus? Edit: I've copied one of the quarantined files manually to a machine over the network that doesn't have antivirus installed, and compared the file on that machine with a local copy (on that machine) of the vshost32.exe template file, and they're bit-for-bit identical. I guess this is a false positive. I still would like to know if it would be possible for me to verify this in any other way though, since next time such a trojan might be reported in a compiled file that we won't have a pristine copy of.

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  • Virus disturbing my audio

    - by Mike M
    i had a desktop.ini virus on my computer. I managed to get rid of it (i think) but now my Mcafee firewall will not stay on for more than 3 secs before it turns off again. Also something is freezing my computer for a few secs when a window is open, also my audio goes in and out when watching videos and listening to music. I figured out that it only happens when i connect to the internet. I have to restart my PC and quickly disconnect the internet if i want to listen to music. also i have vista

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  • clam anti-virus is slowing down my server performance

    - by Scarface
    Hey guys, I just installed clam av http://sourceforge.net/projects/php-clamav/ for scanning file uploads on my linux VPN running php. The problem is that for some reason just initiating the extension in the php ini file slows down my entire network. Regular requests such as changing pages that should take less than 1 second take 5. Has anyone ever experienced this before or have a good virus scanning alternative for scanning file uploads? extension=clamav.so [clamav] clamav.dbpath="/usr/share/clamav" clamav.keeptmp=20 clamav.maxreclevel=16 clamav.maxfiles=10000 clamav.maxfilesize=26214400 clamav.maxscansize=104857600 clamav.keeptmp=0

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  • Is pdf virus proof? [closed]

    - by Jonathan
    I am creating a secure document portal for a client. One of the things that they are worried about is having someone upload a document with a virus. One solution that might work is to enforce that they only upload pdf files. My question is two fold: Most importantly, is a pdf document virus proof? How can you determine in a *nix environment that a file is a pdf, besides just looking at the extension. Thanks! Jonathan

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  • clam anti-virus is slowing down my server performance significantly

    - by Scarface
    Hey guys, I just installed clam av http://sourceforge.net/projects/php-clamav/ for scanning file uploads on my linux VPN running php. The problem is that for some reason just initiating the extension in the php ini file slows down my entire network. Regular requests such as changing pages that should take less than 1 second take 5. Has anyone ever experienced this before or have a good virus scanning alternative for scanning file uploads? extension=clamav.so [clamav] clamav.dbpath="/usr/share/clamav" clamav.keeptmp=20 clamav.maxreclevel=16 clamav.maxfiles=10000 clamav.maxfilesize=26214400 clamav.maxscansize=104857600 clamav.keeptmp=0

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  • HOw to secure whm/cpanel centos server from javascript malacious code virus

    - by Master
    Recently my sites index.php code was replaced some malacious javascript virus code. I really don't know how did that entered into that page. Today when i tried to download that file via ftp then antivirus gave me the warning. So it means it was not entered from my computer. Is there any way to install some antivirus on VPS server with centos 5 , cpanel/whm so that those code should not be allowed to add. also what is mod_security . will it be helpful.

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  • How do I safely use a virus infected USB drive in Ubuntu?

    - by suhridk
    I have an USB drive which I know is virus infected (an anti-virus on my friend's machine detected it). Unfortunately neither of us know the virus name and I don't want to take the risk of plugging it to my Windows box again. Of course, in all probability the virus affects only Windows. (But I'm not sure) I want to know if I can safely plug the USB into my Ubuntu Lucid laptop and copy the stuff I need from the drive. If there are some precautions I need to follow what would they be?

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  • After installing Windows what should I do first? update or install antivirus?

    - by EApubs
    Normally, after reformating and installing Windows 7, I used to go online and install all the updates, install all the driver updates and then install the anti virus. Because long ago, when I installed the anti virus first, applying windows updates crashed the AV! So, I install it last. Specially 7 sp1 is critical right? But now im having doubts... Going online without an antivirus means I'm vulnerable! (I have a home router which have a small firewall but I'm not sure about it) So, whats the best thing to do? Install the anti virus first or install the updates first?

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  • Un virus biologique utilisé à bon escient pourrait augmenter par dix la capacité des batteries, selon des chercheurs américains

    Un virus biologique utilisé à bon escient pourrait augmenter par dix la capacité des batteries Selon des chercheurs américains Les virus sont connus pour leur capacité de duplication et de destruction. Des chercheurs estiment avoir trouvé le moyen d'exploiter à bon escient leur capacité d'auto-renouvellement. En particulier le virus de la mosaïque du tabac (TMV) qui s'attaquent habituellement aux plantes, en particulier le tabac et les tomates. Ces scientifiques américains, qui travaillent sur la façon d'enrober des petites cellules de virus sur des matériaux conducteurs, ont constaté lors d'un test d'incorporation d'une nanostructure sur une batterie...

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  • Possible causes for Domain server being unavailable?

    - by serversurfer
    One of our servers was compromised after a user with administrative privileges accidentally loaded a virus from a USB drive on a desktop connected to the domain. The two most obvious symptoms of this were: The server is no longer responding to login attempts The root directory of the drive containing user data has been filled with randomly named empty folders. (Initially it was around a million folders, I've been slowly deleting them.) I've run several virus scans from different vendors and am fairly confident the virus has been removed but the damage is done. I'm hoping the two symptoms are related and that once the directories are gone the server will start responding again. The drive is very slow to respond. I'm deleting about 20k folders at a time. Anymore than that and windows explorer becomes unresponsive. In the event that I finish cleaning up the HD and things don't return to normal what other things can I check?

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  • Virus ridden computer freezes on startup - can't access safe mode

    - by Eric
    Someone whom I love but who cannot be trusted with a live internet connection downloaded a particularly nasty virus that in turn downloaded a variety of unknown other viruses onto my home computer. The computer now freezes completely a few seconds after reaching the desktop and is unresponsive to any keyboard or mouse command. There are videos of my little kid on this hard drive that are not backed up and that I cannot bear to lose. But if I could get in there long enough to copy them off to an external drive I would have no problem doing a clean windows install to fix the problem; everything else is backed up online but the videos were too large. Normally I would start by going into safe mode but I have a large Dell monitor that doesn't show anything until the welcome screen appears. I think that I have gotten into the setup screen once or twice by mashing keys before I can see anything, but this monitor doesn't support that so I can't see what I'm doing to get it to boot from CD or anything else. I'm at my wits end. Any advice?

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  • Virus cleanup + dying drive = XP Automatic Updates crashing in esent.dll

    - by quack quixote
    Background I'm doing system recovery on an old WinXP SP1 system brought to me on suspicion of virus infection. After taking preliminary backups, I used MalwareBytes to detect and clean the infection. I might've even gotten it all. In the process, I've discovered (a) the system drive is showing signs of impending failure, and (b) the owner has been using the system's old crusty IE-6 instead of the up-to-date Firefox I've provided for him. So naturally, thinking I had a relatively stable system, I tried to hit the Windows Update site to install IE-8, in case further training doesn't stick. The update site told me it needed to update the installer, and I started that process. Soon after, wuauclt.exe started crashing, reporting addresses in module esent.dll. There's a Microsoft KB (910437) on a problem with that DLL, so I downloaded the hotfix and installed. The crashing did not stop. I attempted to install SP3 from the offline installer, but that didn't fix the issue either. The system is reporting a few hard drive / IDE controller errors, but they don't correlate to the crashes, so they aren't the direct cause. I've also attempted to rollback to the time between the infection removal and the first crashes, but that doesn't help. Question The hotfix I tried to install dealt with problem in transaction logs of the Extensible Storage Engine (ESE) database. I suspect this issue is similar, but that the database itself (whatever the ESE database is) is corrupted. Is there a way to clean or clear this database so that system operation returns to normal? Can someone enlighten me as to what the ESE database actually is, and where it resides? Can I just locate some files and delete them to bring this under control?

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  • Doing a virus check on a file from a build script

    - by the_mandrill
    I would like to be be able to invoke a virus check as the final stage of the build process (please don't question why a dev machine would get a virus, it's just a belt-and-braces approach to avoid the risk of getting sued by customers...). Also I'd like the option of having AV on a machine but switching the auto file system protection off (at least for the build directories). What I would like is a generic way of scanning a file using whatever AV system is in place. I'm assuming that there's an Windows API to do this, given that Windows detects the presence of an AV system, and browsers such as Firefox invoke a virus scan whenever a file is downloaded. So what's the API that they're using? There's the Microsoft AntiVirus API but that seems to be specific to Office documents. Does the approach involve using WMI? (and if you can detect the AV provider from there, how do you then invoke it to scan a file?) I know that I could write the script to manually call the AV scanner that I know to be installed, but as an intellectual exercise I'm more interested to know how apps like Firefox are doing this.

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  • Advise about quick/full format

    - by ile
    Is it virus-safe to do quick format of hard drive? I want to format disk that was infected and install windows 7 on it, but I am not sure if Quick Format is secure enough. I am aware that it does not delete data but pointers to it, so I wonder if it is possible that virus activates from that data? Thanks

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  • McAfee Virus Scan and Oracle RAC

    - by Lee Gathercole
    Hi, We're experiencing a strange problem with Oracle RAC and McAfee anti-virus. As part of the installation of the Oracle RAC we disable anti virus as directed. We have had our RAC running fine, but when we came to re-enable the AV and reboot we got the BSOD. Abnormal Program Termination (BugCheck, STOP: 0x00000035 (0x8E984678, 0x00000000, 0x00000000, 0x00000000 NO_MORE_IRP_STACK_LOCATIONS Following the standard process of raising this problem with Microsoft they identify the problem and also a fix. Microsoft talk about too many file filter drivers being present and pushing the DFS upper limit beyond the default size. Upping this value, as per msdn, has no impact. We're able to recover from this BSOD by disabling AV. We don't have the problem if we run the AV service manually whilst the system is up. However, if we make the service automatic we fail to boot. Tech Details 2 Node Oracle 10g Cluster 2 * Windows 2003 SP2, 16GB RAM, Quad Core 3ghz Processor SAN attached storage McAfee VirusScan Enterprise 8.5.0i, Scan Engine (5300.2777), DAT Version (5536.0000) Thanks Lee

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  • C Language - \n - creating virus

    - by sagar
    #include<stdio.h> #include<conio.h> union abc { int a; int x; float g; }; struct pqr { int a; int x; float g; } ; void main() { union abc b; struct pqr c; clrscr(); b.a=10; textbackground(2); textcolor(6); cprintf(" A = %d",b.a); printf("\nUnion = %d",sizeof(b)); printf("\nStructure = %d",sizeof(c)); getch(); } Now, Save this program as virus.cpp ( or any name that you like ) I am using Turbo C comiler to complie this program & run from trubo c. ( Ctrl + F9 ) I don't know weather to ask this question at stack over flow or at super user. I am using Windows 7 & I have installed Avira AntiVir virus system. I am not here for any kind of advertisement of microsoft or antivirus system. I am just here for solution of my query. When I tried to run above program - It creates a worm (DOS/Candy). I believe there is nothing wrong in program. Oke.. Now here is something special. Execute the same program with following difference. Here the only difference is space between \n #include<stdio.h> #include<conio.h> union abc { int a; int x; float g; }; struct pqr { int a; int x; float g; } ; void main() { union abc b; struct pqr c; clrscr(); b.a=10; textbackground(2); textcolor(6); cprintf(" A = %d",b.a); printf("\n Union = %d",sizeof(b)); printf("\n Structure = %d",sizeof(c)); getch(); } The difference is only \n and space. Question is "Why my simple program is detected as virus?? " Thanks in advance for sharing your knowledge. Sagar.

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  • Question about malware-sites: How can I be in danger?

    - by juanmaflyer
    Hi people!! My english is horrible but i will do the best to be as accurate as posible. 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 I download any type of infected executable file and then I RUN IT. I mean that if i have the infected executable in my desktop but i leave it there for years without clicking it, I won't be in danger... My question is: How can i be in danger browsing the so called "malware pages or sites"??. If i am just browsing an "infected site" how could I be affected by a virus. In any moment the browser is asking me for the permission to download "something", so how could it be?? Although i don't give permission to the browser to download 'something' is data being downloaded to my computer?? Its some kind of cookie? I will ask in another way... What is the level of riskiness if i get inffected in a malware site compared with the level of an executable virus?? Thanks a lot!

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  • 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?

    - by galacticninja
    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 info on the RLO unicode character here: http://www.fileformat.info/info/unicode/char/202e/index.htm http://en.wikipedia.org/wiki/Bi-directional_text Info on the RLO unicode character when used by malware: http://www.ipa.jp/security/english/virus/press/201110/E_PR201110.html Mirror link: http://webcache.googleusercontent.com/search?q=cache:KasmfOvbVJ8J:www.ipa.jp/security/english/virus/press/201110/E_PR201110.html+&cd=1&hl=en&ct=clnk You can try this RLO character test webpage: http://www.fileformat.info/info/unicode/char/202e/browsertest.htm The RLO character is also already pasted in the 'Input Test' field in that webpage. Try typing there and notice that the characters you're typing are coming out in their reverse orders (right-to-left, instead of left-to-right). In filenames, the RLO character can be specifically positioned in the filename to spoof or masquerade as having a filename or file extension that is different than what it actually has. (Will still be hidden even if 'Hide extensions for known filetypes' is unchecked.) The only info I can find that has info on how to prevent files with the RLO character from being run is from the Information Technology Promotion Agency, Japan website: http://www.ipa.jp/security/english/virus/press/201110/E_PR201110.html (Mirror link). They adviced to use the Local Security Policy settings manager to block files with the RLO character in its name from being run. Can anyone recommend any other good solutions to prevent files with the RLO character in their names from being written or being read in the computer, or a way to alert the user if a file with the RLO character is detected? My OS is Windows 7, but I'll be looking for solutions for Windows XP, Vista and 7, or a solution that will work for all those OSes, to help people using those OSes too.

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  • Ask HTG: Using the Malicious Software Removal Tool, Scheduling Computer Startups, and Diagnosing an Overheating Laptop

    - by Jason Fitzpatrick
    Once a week we select a few questions from the pile of emails we answer and share the solutions with the greater readership; this week we’re looking at the Microsoft Malicious Software Removal Tool, scheduling computer startups, and how to diagnose an overheating laptop. HTG Explains: When Do You Need to Update Your Drivers? How to Make the Kindle Fire Silk Browser *Actually* Fast! Amazon’s New Kindle Fire Tablet: the How-To Geek Review

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  • Which Free Online Antivirus Scanner is the Best? [Comparison Test and Results]

    - by Asian Angel
    There are times when an online or supplementary scanner can be very useful when cleaning up an infected computer or just to get a second opinion on the security of your system. With this purpose in mind, the good folks over at the 7 Tutorials blog decided to do a test using the ten most popular online security scanners to see what worked the best and what did not. The following scanners were used for the test: Bitdefender QuickScan, BullGuard Online Scanner, Comodo Cloud Scanner, ESET Free Online Scanner, F-Secure Online Scanner, Kaspersky Security Scan, McAfee Security Scan Plus, Norton Security Scan, Panda ActiveScan and Trend Micro HouseCall. Are there any online or supplementary scanners that you use and depend on? Do you agree or disagree with the results? Let us know in the comments! Test Comparison – What is the Best Free Online Antivirus Scanner? [7 Tutorials] HTG Explains: Why Linux Doesn’t Need Defragmenting How to Convert News Feeds to Ebooks with Calibre How To Customize Your Wallpaper with Google Image Searches, RSS Feeds, and More

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