Virtualization is the creation of a virtual (rather than actual) version of something, such as an operating system, a server, a storage device or network resources.

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Exactly how secure is VM browsing?

I generally do all of my web browsing in a VM. I have one "safe" VM running Ubuntu that has guest services installed. I generally only go to sites I deem are trustworthy here. I also have an "unsafe" ...
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1answer
186 views

Using a virtual machine for increased layer of privacy (w/ tor)?

One of my friends told me that running tor in a virtual machine Linux and then passing it through a proxy on the underlying Windows would provide in his words great security. Is this true?
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3answers
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Can a guest virtual machine be compromised by a virus on the host machine?

All questions ask about the other way round, ie. can a virtual machine compromise the host. But I'm asking can a virus on the host machine compromise the guest virtual machine?
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1answer
262 views

Is a separate server needed for remotely accesing accounting software?

Wishing you all a great 2014. I hope this is the right section. Basically we have a Dell Poweredge R520 server in our office, and we now want to install some accounting software that can be accessed ...
0
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1answer
189 views

How safe is the VirtualBox NAT network adapter option?

I had an Ubuntu VM running and I was using Firefox in it to look at tutorials; then my antivirus detected an attempt to forcefully install a fake Java Upgrader. From what I know about the VirtualBox ...
0
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1answer
169 views

Virtualization / Cloud-Stack fingerprinting from running VM

How can the host environment (not just the OS) be identified from a running guest VM. To determine what the underlying host and virtualization stacks being used actually are. I.e. whether there's a ...
7
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3answers
951 views

How does a root kit work inside a virtual machine?

In my class, we are discussing virtual machine based root kits. I've research root kits, but could not find any information specifically talking about how root kits work inside of virtual machines ...
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5answers
908 views

Am I safe if I run untrusted applications inside a Virtual Machine [duplicate]

I have some untrusted software. I plan to run them on a guest Windows 7 on my host Windows 8 OS using Oracle VirtualBox. In the worst case, will only my guest OS be affected? Can the hacker access ...
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1answer
462 views

Is a VirtualBox Host-only Adapter safe?

I have a VM in VirtualBox with two network adapters: a Host-only adapter and a NAT adapter; I was wondering if the VM gets compromised, is my Host-only adapter putting my host in danger? --- ...
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0answers
93 views

Enabling virutalization, addressing the bluepill risk?

Background to this question is the ambivalence I assume with virtualization. Also to start directly with clarity: the term bluepill should here be a placeholder to denote "malware that uses ...
0
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1answer
648 views

Full disk encryption for server running virtual machines

I have a question about how to properly set up full disk encryption on a server running virtual machines. My setup is Windows 2012 with 2 VM's(Hyper-V) on it. I was looking into using Becrypt for ...
3
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4answers
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Is dual-booting an OS more or less secure than running a virtual machine?

I run two operating systems on two separate disk partitions on the same physical machine (a modern MacBook Pro). In order to isolate them from each other, I've taken the following steps: Configured ...
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2answers
118 views

Does RNG play a role in PGP signing?

We have a Jenkins system that builds and PGP-signs software releases, and we are considering moving the signing component to an isolated VM instead of running it as part of the overall builder ...
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0answers
92 views

How does Travis CI protect itself against being used for attacks?

Travis CI allows anyone to run any code on their servers by checking it into GitHub. How do they ensure that someone isn't taking advantage of their servers to launch an attack or other malicious ...
10
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1answer
256 views

Where does a Hyper-V guest get its entropy when generating a certificate authority key pair?

According to findings by the EFF's SSL observatory, there are "tens of thousands of keys that offer effectively no security due to weak random number generation algorithm." My understanding of that ...
0
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2answers
159 views

Why does host's antivirus detect guest's malware?

I'm analyzing some malicious files on a VM and I'm noticing that every time I open a file, the host's antivirus detects it. Why does this happen? Is the malicious content escaping to the host?
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3answers
7k views

Is it appropriate to use haveged as a source of entropy on virtual machines?

While looking for solutions to entropy pool depletion on virtual machines, I came across an interesting project called haveged, which is based on the HAVEGE algorithm (HArdware Volatile Entropy ...
0
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3answers
314 views

What are the pros and cons of using live CDs vs VMs for malware analysis?

I'm planning on doing some malware research for a research project, and I was wondering what would be a better option for keeping my system safe from viruses accidentally infecting it. I'm only ...
0
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2answers
321 views

Isolating host machine from external network

How to prevent a host machine from sending/receiving packets with the following network configuration: eth0 - physical NIC :: not configured; tun0 - virtual NIC for VM which role is the gateway for ...
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1answer
1k views

Can a firewall blocking a guest virtual machine secure the host?

I have searched up whether a host is safe from its guest, and generally, it is said that, aside from vendor security flaws, a guest that is infected can infect the host over a shared network. So, ...
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0answers
42 views

How to manage security for multiple PC and VM?

I have a firewall VM which creates I have used to setup subnet for different purposes. For example: (fake ips, of course) 1.1.2.1/24 DMZ 1.1.3.1/24 Internal 1.1.5.1/24 security/logging I use ...
0
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1answer
203 views

Building an VM with Vagrant and connecting with ssh+2FA to protect a bitcoin wallet?

I would like to try to build a Virtualbox image to use with Vagrant. This is the features: Login with SSH + 2FA (Google Auth) No X No internet connection Copy unsigned transaction, sign it and ...
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2answers
464 views

Someone logged on my Centos VM; Can they attack the host OS?

I'm using Windows 7 and decided to learn Linux Administration (Centos 6.4) using Oracle VirtualBox to host the Linux system. In my network configuration I choose "Bridged Adapter". I set the VM's IP ...
3
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2answers
529 views

Instrumentation vs virtual machine introspection

I cannot differentiate between Instrumentation and Virtual machine introspection. Since the goal of Virtual Machine introspection is to examine the properties of a target through virtual machine ...
3
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3answers
449 views

Backup personal email on VPS - privacy, security and trust risks

FastMail.fm hosts my personal email account. Now they claim to have reliable backup services, but I'd like to have my own copy of my email archives. What I'd like to do is back up to my VPS, which ...
0
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1answer
160 views

How can an out-of-the-box (Windows) server not be secure? [closed]

Background: I'm considering switching from shared web hosting to VPS for added security. However - managed VPS's costs much more than unmanaged ones. So, assuming: I secured my website against any ...
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4answers
442 views

Shared hosting vs VPS

I have an Asp.net site. Which hosting system do I need to secure it adequately* against anyone reading private information that's on the server? This is assuming I'm not worried about the sysadmins ...
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1answer
570 views

Virtual Box security [duplicate]

I am using virtual box to run a secure machine. I am not fully confident in the hosts security. My assumptions are that of course the host can read the VM when the VM is running and that if the ...
2
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3answers
441 views

Suspicious VMWare connections that bypass firewall

I'm running VMWare 5 and I have found that when I start up VMWare I see two connections: TCP 10.100.100.161:55555->as-40816.engx.vmware.com:https (ESTABLISHED) TCP ...
6
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2answers
229 views

Firewall on a VM

I know I could use a software firewall on the guest to achieve a situation similar to this, but is there a way to emulate a firewall (protecting multiple Guests) between a host and guests on a ...
4
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1answer
246 views

VMware server 4.1 -how can I prevent VMs being exposed to each other through VMCI?

I have realized there are issues such as virtual machines being exposed to other VMs within the same system when they're connected to the VMCI socket interface. How do we prevent this ?
2
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5answers
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How will microvirtualisation change the security field, if at all?

Will this reduce the number of exploitable vulnerabilities in common operating systems? Will the only path in be to exploit the VM itself? Marketing blurb from Bromium's website below. ... ...
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3answers
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vt-d Virtualisation and Trusted Execution Technology

Being a long time VirtualBox user and having recently purchased a new laptop equipped with an intel i7 720QM I discovered that it supported vt-d. In the meantime I've found out that vt-d comes with ...
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2answers
121 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 ...
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1answer
77 views

Are virtual “canary” systems used to detect malicious programs?

I was wondering if malicious programs are detected using a virtual system. For example a "canary" system would be set up in a virtual environment then unknown and untrusted programs would be executed ...
4
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4answers
477 views

Is packet sniffing a risk on VPS? If so, what precautions should I ask my host if they take?

I'm wondering if packet sniffing is a risk on my VPS. Is it always a risk or are their precautions a host vendor can take? e.g. a switched network etc. If I wanted to ask my host what precautions ...
2
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2answers
319 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. ...
4
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1answer
513 views

Is it possible to detect host-machine of my virtual-machines?

So basically I need to know is there any way to find a connection (or relation) between packets sent by my VMs and my host machine. In my lab I have lots of workstations, each running a VirtualBox ...
3
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3answers
260 views

Why Parallels 8 installer looking into my Chrome's Cookies?

While trying to install Parallels on OS X I looked into Activity Monitor to find where is the installed Parallels located (it was weird that it stays invisible in Application folder). And than I found ...
8
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1answer
2k views

Is it safe to use rng-tools on a virtual machine?

I am currently working on an app that needs to create GPG key pairs using the gpg tool. Unfortunately, this tool takes a long time to generate a key pair if there is insufficient entropy/randomness ...
3
votes
1answer
639 views

Isolate a Virtualbox VM from local network [closed]

I have the need to isolate a virtual machine created with Virtualbox from the local network but I need to provide internet access to that machine. It is the first time that I face this kind of ...
6
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1answer
171 views

Are the Trends of Type II Hypervisors and Newer Applications a Security Issue?

It seems that every time I have a new 'binge' at using the likes of VirtualBox or VMWare (the Type II version), they've introduced even more high-level features, often ones that remove layers between ...
0
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1answer
70 views

Performance issues while applying encryption at host or guest level?

One of the security expert here suggested me to apply encryption at guest(virtual machine) level rather than applying at host level with good reason. Before applying that I want to know what can be ...
0
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1answer
147 views

Which one is best, host or guest encryption?

Can anyone please tell me which option is better, I mean whether I should encrypt my data at virtual machine level or guest level in cloud? I tried to investigate it but did not find best solution so ...
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1answer
99 views

VM Guest network security with NAT?

Supposing I have an untrusted guest VM (e.g. I'm running a cloud data centre). If I set the network connection up to use NAT, the guest can still access the internet. But what's to stop them accessing ...
2
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1answer
297 views

How are IaaS Virtual Machines Isolated?

I am currently examining Hypervisor firewalls for my graduate thesis, but I unfortunately don't have a lot of experience with IaaS environments. How are IaaS Virtual Machines network isolated from ...
3
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1answer
236 views

What are the tradeoffs in cost, effort, and value in moving a database server to a virtualized DMZ environment?

I am quite new to the DMZ concept and working on a project as part of my master thesis where Remote access is required for the Development environment. However, there is a functional requirement for ...
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1answer
132 views

How to secure application VM?

This question is derived from my previous question on Isolating Web application where two approaches were recommended. Apache Chroot Jail Isolation through Virtualization My question is if one of ...
8
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1answer
3k views

What is Virtual Machine Introspection?

I have seen it presented as a special security technique but it seems like it basically means automated security monitoring of your virtual environment. Is that the basic idea?
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1answer
143 views

Enforcing software expiration on virtual machines

It is possible for virtual machine guests to bypass the software expiration timers for paid software. This example shows one way to do this on VMWare. A simpler method is for the user to "revert to ...