Antivirus or anti-virus software is used to prevent, detect, and remove malware, including but not limited to computer viruses, computer worm, trojan horses, spyware and adware.

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Does it matter which platform a file is scanned on for malware?

Different operating systems use different file types and file systems. Does it make a difference to a virus scan which system it is being run on and what type of malware it's looking for? I ask ...
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0answers
33 views

What is the difference between generic decryption vs sandbox techniques? [closed]

Sand-box technique uses generic decryption or they are same?.Can you give an example
4
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1answer
130 views

Should veil framework produce packed and obfuscated binaries which bypass virustotal?

I have been working with the veil framework to test an internal IDS system I have in place. I have used a public malware sample which produces an 8/53 hit score on Virustotal and run it through the ...
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4answers
22k views

What is the difference between antivirus and firewalls

I need a brief explanation about the differences between antiviruses and firewalls
6
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1answer
932 views

How can one create one's own anti-virus scan server at home? [closed]

I suppose that every one used a service such as virustotal.com, anubis.iseclab.org, or any other service that could provide the same objective to scan same files. So my question is how can I make ...
2
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0answers
66 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 ...
6
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3answers
2k views

Possible to detect packed executable?

A packer is a way of obfuscating an executable program, i.e., transforming so the result is still executable and has the same effect when run, but looks different (so it won't be detected by static ...
0
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1answer
67 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 ...
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6answers
23k views

How to scan a PDF for malware?

Can anyone suggest an automated tool to scan a PDF file to determine whether it might contain malware or other "bad stuff"? Or, alternatively, assigns a risk level to the PDF? I would prefer a free ...
2
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2answers
94 views

How do anti-viruses identify malicious pages when JavaScript doesn't have access to the filesystem anyway?

Disclaimer : I am not very knowledgeable about the behaviour of anti-viruses (anti-viri?). I was wondering how they discern between malicious and non-malicious pages if all they can read is the HTML ...
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2answers
69 views

Anti-virus anonymity question

Many people pay for VPNs and select the VPN based on whether or not that VPN keeps logs of the user's activities and if so for how long. The motivation is privacy- they don't want their surfing habits ...
2
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4answers
243 views

Could antivirus programs not just scan all files upon creation?

Could antivirus programs not just scan all files as they are created instead of using on access scanning. Would this kind of approach not be much more scure?
0
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1answer
32 views

What kinds of PE file infection can AV software detect?

I wonder what kind of infections AV software is capable of detecting: only if the file is signed? also if the entry point isn't changed? does it also have hashes for non system files? what if the ...
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4answers
365 views

How can I scan hosted POP3 or IMAP e-mail for viruses?

In our company we use a hosting provider for e-mails and it seems they don't scan incoming email against viruses. And our employees does not very careful about attachments... So we deal with virus ...
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3answers
12k views

Why is 'avast! Web/Mail Shield Root' listed as CA for google.com?

I just noticed something weird in my browser: the certificate for www.google.com has been issued by avast! Web/Mail Shield Root. Should I be worried? I am using avast! Antivirus so it's probably a ...
8
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2answers
949 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?)
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votes
1answer
66 views

Any reason for a user to use an email scanner if they don't use any offline mail clients?

I typically recommend that users enable a real-time email scanner (aka a mail shield) in order to detect a possible vector used by malware. Even if they don't use an email application, the rationale ...
0
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3answers
171 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 ...
0
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0answers
36 views

What can Android Antivirus apps really do? [duplicate]

I am studiying about android development and given the permission restriction between apps and isolation that the operating system itself imposes, I was wondering what can an antivirus app distributed ...
0
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1answer
270 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
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2answers
73 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), ...
0
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3answers
87 views

It is possible detecting threat by only with file information?

It is possible detecting threat by only with file information of a file like file's hash(md5,sha1,sha256, etc), file size, mime type, etc with ClamAV or Comodo AV for linux with shell command? It ...
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3answers
73 views

Gaming Mods Security Risks

I read the following post, and while the questions was specific to SkyRim, the more general answer was that it depends on the game. I wanted to pose a more generic question here to the security folks. ...
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4answers
644 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 ...
5
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2answers
129 views

Are malware detection rulesets publicly discoverable?

I am uncertain about how public malware detection rulesets are? By a "ruleset" I mean the rules, usually written in Yara, that malware detection engines use to determine whether a file or memory ...
73
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10answers
6k views

How do you explain the necessity of “nuke it from orbit” to management and users?

When a machine has been infected with malware, most of us here immediately identify the appropriate action as "nuke it from orbit" - i.e. wipe the system and start over. Unfortunately, this is often ...
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2answers
340 views

Do thin-clients need antivirus?

I've just taken over as IT Manager in an environment where most of the end-users are using HP-based Win7 thin clients (approx 50 seats) to access a remote desktop server. All the servers & fat ...
2
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1answer
174 views

Should anti-virus detect metasploit payloads?

As part of a workstation pen test, I copy a simple metasploit payload onto the workstation, and try to run it. Usually this is blocked by anti-virus software. However, sometimes it isn't (I won't name ...
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5answers
7k 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 ...
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0answers
70 views

HTTP GET Request to a webpage that does not exist [closed]

I am seeing a machine is making a HTTP GET request to webpage (ex: www.sample.com/1.png), proxy devices respond with status code 407 (proxy auth required). But when I checked for the site via ...
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1answer
96 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 ...
6
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4answers
5k views

Are there faux/fake malicious websites to test web reputation services similar to EICAR?

Antivirus writers have agreed for their software to recognize a standard "fake" virus file - the EICAR file, to let users check, that the software is up and running. Are there any equivalent test ...
4
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6answers
3k views

Why do some antivirus programs find infections that others miss?

I have Avast Free antivirus on my Windows 7 PC and yesterday I used Bit Defender quick scan addons, which spotted a virus. In rechecking with Avast, it didn't pick it up. In scanning my system with ...
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2answers
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Avast https scanning

How does Avast's https scanning feature work? Is it basically a MITM attack? This feature was enabled in the 2015 version released a few days back
6
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3answers
2k views

Detected virus in pdf - should I be worried (CVE-2014-8449)?

I downloaded a pdf earlier, and I was trying to send it to my friend, but gmail said that it detected a virus. So I ran it through virustotal.com and only 1 out of 56 scanners came up with a virus - ...
2
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1answer
234 views

How is the file overlay read by an exe/virus?

According to what I know ,Overlay is the part of PE file that is not covered by the PE header and therefore isn't part of the virtual image in the Loaded PE. My question is if the overlay is not ...
5
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1answer
452 views

How antivirus companies create virus defnitions for new outbreaks

This question quite amazes me. I dont understand how antivirus companies get info about the latest viruses. have they installed some kind of filters to monitor the internet traffic ? Or they are ...
2
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1answer
101 views

Will 3rd party antivirus/antimalware programs compromise OSX's built-in security?

There is a very interesting post written by @TechZen. Here's the excerpt from the original post (bold emphasis mine) Should I get an antivirus for my Mac? There's never been a an actual Mac OS X ...
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6answers
132 views

When is an antivirus program needed/useful?

Let's say I buy a computer and use the internet for services but rarely download anything and when I do it is from legitimate sources with a minimal to non-existent chance of malware. What benefits ...
9
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1answer
105 views

Security measures and anti-virus on server to mitigate acting as a propagation vector

We have a web application for which I've been asked to add the ability to let users upload documents that will then be visible and downloadable by other users. Those documents will typically be images ...
8
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2answers
135 views

AV detection of signed malware

With the massive Sony leaks (including their private keys/certificate), i was wondering: How do major AVs deal with signed binaries? ie: Does it influence their detecting ability of the signed ...
41
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8answers
10k views

Should I get an antivirus for my Mac?

There are some people saying that people should use an antivirus software on Mac. And there are thousands of people claiming that Macs don't get viruses (under this term I mean spyware / malware as ...
8
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4answers
7k views

Why Adobe is recommending McAfee security scan during flash player installation?

Why is Adobe recommending a McAfee security scan during the installation of flash player?
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2answers
100 views

Any “cleaned” virus that's been successfully re-released?

Anti-malware software has to keep track of all bad software there is. To ease this load, it seems like a good idea to stop looking for threats that's been dead for years. Is there any example of some ...
0
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1answer
73 views

Is there vulnerabilities that are inherent to the concept of an open source antivirus? [closed]

I read that antivirus opensource software would be a good idea since the database could be informed and mainained by lots of capable people. However I have also read arguments to the contrary but none ...
0
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1answer
216 views

What is the difference between YARA and CLAMAV?

Can any one explain the difference between YARA and ClamAV ? Are they just two different ways of writing AV or Malware signatures ?
23
votes
9answers
5k views

What makes it difficult to have a hardware antivirus

MS Windows is always vulnerable to virus and worms and having an antivirus is almost necessary. How is it possible that hardware antiviruses don't exist? The idea sounds pretty good, if the antivirus ...
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1answer
45 views

What does “hosts-modifier” tag in VirusTotal Intelligence means?

I went through the help pages of VT and VT Intelligence, saw documentation about most tags, but couldn't find anything about the "hosts-modifier" tag, can anyone explain to me what does it mean?
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10answers
6k views

How to explain to a customer that spamfilters don't catch everything

I used to work in a small office which provided basic desktop support for users. One day I had to answer a call from a very angry customer and he asked for my boss. He wanted to know how could one ...
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1answer
82 views

PCI Compliance - Antivirus in host and virtual environment?

We have a couple servers with a host system, and virtual DB and Web instances. Is it possible to be compliant with PCI if you install the Antivirus only on the host system, or does it need to be ...