The operating system is the software component that provides abstraction of physical hardware, and provides a generalized model for application software to execute without the need for specific hardware knowledge. Questions on the topic of operating system security should use this tag; you may also ...

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1answer
105 views

What does Msgsrvr and Scientia-ssdb do?

I'm having a task in a computer security class in school where I'm supposed to scan a host for open ports in order to find out what services is being run there. I have found out (among other things) ...
-1
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0answers
15 views

Could see image of previous session after restarting and switching OS

(I have GNU/Linux and Microsoft Windows installed.) I played a game on Microsoft Windows, quit the game, restarted the PC, and selected GNU/Linux. On the login screen, the background image was ...
15
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3answers
1k views

Can Windows malware harm a Linux computer when it's executed with Wine?

I am an (Ubuntu) Linux user. Sometimes, I have to use Wine for running Windows executables. I would like to know if Windows malware (virus, trojan, worm,...), i.e. malware that was not intended to ...
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0answers
39 views

How to install dual system on PC? [on hold]

I would to install linux OS alongside to my Windows 8.1 OS, i tried once but failed. Please help me how to do that. thanks in advanced.
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2answers
142 views

Intrusion Detected - OS Attack

I have recently gotten a prompt from my anti virus stating that there was an intrusion with an OS attack as describe in the link below: ...
2
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2answers
88 views

the dangers of internet forums - what is FUD, what is not

I just visited a forum and a member knew what OS I was running without me saying anything (a not TOO common distro of linux). Now I'm not sure how he exactly he might have done it, or what information ...
16
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6answers
3k views

How can I protect my computer from my potentially malicious colleagues?

So, I work in this small company (10 people) where we do stuff in programming, for various platforms. I started recently working there (2 months) right after I graduated. My work is not exactly ...
0
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2answers
46 views

How to hide or obfuscate the type of OS?

I get the OS type of a remote host by: connecting to an open port (telnet <host> 22); using Nmap (nmap -A <host>). What are techniques and how to hide or change the information about ...
0
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1answer
31 views

What parameters to check to say that a computer running Windows is slow in responding because of infection?

When interaction between the user and the operating system is too slow (Windows become slow in responding to different user's request): what parameters could we check (and that we could use within a ...
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1answer
37 views

Can benign software modify Widnows DLL files?

On Windows (XP, 7, 8, NT ...): can .dll files be modified (in any manner) by benign programs/software already installed/running on the computer ?
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1answer
53 views

What registry windows keys malware target often?

I wonder what are the main registry windows keys malware target often ? I would love to code a program that will check the state of those windows registry keys for eventual modifications by malware.
3
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2answers
4k views

Where can I download vulnerable Windows OS images to practice penetration testing?

My objective is to learn and practice all the vulnerabilities and their exploitation on vulnerable OS.
7
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5answers
1k views

Forensic research: What OS to use [closed]

I have been given an assignment from my school, in wich I have been given a Virtual image of a compromised system. The first thing I need to do is setup a environment to wich we can mount the image. I ...
1
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2answers
93 views

Is it possible to defeat the OS detection capabilities of network scanning tools?

Network scanning tools such as nmap have the capability to infer operating system version based upon lower-level system details. EG: TCP/IP stack behavior, etc. Are there any known methods to trick ...
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1answer
59 views

Proccess to exploit an OS vulnerability [closed]

What are the steps to use an exploit on an OS vulnerability? I tried the popular ms08-067 on an XP machine, following a guide found on the internet, discovering Metasploit etc., but I can't figure ...
11
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7answers
2k views

Can viruses actually inject their code in other processes?

Can a virus really inject its own code into a process so it stays on your computer permantly? The only way to actually remove it is to reinstall your OS. My question is how can it do that without ...
4
votes
4answers
1k views

Is online banking more secure on iOS than a desktop computer?

Does Apple's iOS provide a more secure environment for online commerce (banking or shopping) than Windows or Mac OS X? Since the only software that can run on iOS must be vetted by Apple, the ...
10
votes
6answers
9k views

Is my computer at risk of being hacked when using public Wi-Fi?

I'm sitting at a cafe, using their public Wi-Fi. I don't go on sensitive sites; I basically go to a music site and listen to a live stream, for which there's no login. I don't check my email or visit ...
1
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2answers
61 views

Can a drive-by download attack crash the OS?

Are there cases where a serious drive-by download attack could crash the operating system or the browser ?
0
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0answers
29 views

Where is the scope of ISO7816 standard family in smartcard operating systems interoperability?

ISO/ICE 7816 defines a series of standards for using in smart cards. For example, part 4 of these series named "Organization, security and commands for interchange" (which it's last edition has ...
3
votes
3answers
396 views

Is Chrome in Metro Mode more secure than Chrome in Desktop Mode?

With Windows 8, Microsoft introduces the Metro Apps which run in a sandbox environment, and therefore should be more secure. I would be interested to know if this higher security that the metro apps ...
4
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3answers
474 views

How to hack a Win95 machine?

While playing with old operating systems, I came across that there are no remote code execution exploits available for Win95 machines, running just file share (no IIS or anything else). Win95 neither ...
2
votes
1answer
50 views

Are files created in Chrome OS developer mode tracked by Google?

If I enable developer mode, then open a shell and create /some/directory/temp.txt, it is invisible to me through the Chrome Filesystem API. But does this mean that it's also invisible to Chrome OS ...
2
votes
1answer
379 views

Major differences between Kali and SecurityOnion

Curious about the major differences between Kali Linux and SecurityOnion. Do you think it would be easy or useful to replicate what has been done with SecurityOnion on Kali? Why is there such a ...
3
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1answer
99 views

How does binary code execution vulnerability work on a modern OS?

In a modern OS I think that: the .text section where binary assembled CPU instructions are stored cannot be modified the .data/.bss section is marked as no-execute so that the information there will ...
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2answers
69 views

Automatic vs Manual

When it comes to technologies that directly affect information security, how do you determine when it is better to use an automatic option instead of a manual option, and vice versa? I already feel ...
2
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2answers
5k views

How can I recover encrypted files after system reinstallation

I had a file which contains images and videos, I was using the windows 7 ultimate and I had encrypted the file. Now I have copied that file to my hard disk and format that operating system and again. ...
2
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2answers
213 views

OBSD X11 as non-root?

If running X11 as root is not a very good idea, then can anyone mention a method/solution, how to still use a GUI, and not having X11 as root?
11
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4answers
978 views

Are exploits platform dependent?

Looking over an overview of the newest published IE exploit, I noticed what I think is assembly. I don't know anything about exploit development, but I know a little about assembly. Seeing that ...
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2answers
109 views

What makes iOS more secure than other phone OS [closed]

Let's start off with an example. Here in Canada, credit card companies cannot upgrade you credit card limit. You need to make a request, that will then get analyzed and then, depending on your status ...
8
votes
2answers
434 views

Running proprietary software on Linux safely

As a summer project, I'm looking to prevent any piece of proprietary software like many games I run from have access to my personal files. After looking a lot at sandboxing, I've decided that anything ...
3
votes
4answers
179 views

One computer with multiple OSs in different drives

I use my personal computer for both programming work and gaming at my free time(and sometimes penetration testing) all these in different operating systems each. The problem is that I dont really ...
2
votes
1answer
46 views

After restoring from a (valid) full disk backup can malware still persit?

In the comments to this question it is mentioned that even after a backup recovery malware still can persist. Do I understand that correctly? How is this possible? If Acronis True Image is used to ...
0
votes
2answers
59 views

Is there a way to prevent software from accessing hardware IDs?

I think this is related to this question, but I would like to know if there's also a way to prevent "third party" applications from seeing hardware IDs (motherboard, hard disks, and others), or giving ...
28
votes
6answers
3k views

Secure Linux Desktop

I'm looking for hints about secure linux desktops. Securing servers is no problem. Most recent Software Updates, run only the services required etc. But what about desktops? I'm thinking about details ...
3
votes
4answers
2k views

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 ...
0
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1answer
57 views

access control-intersection of subjects’ permissions

In the book named "operating system security", I read this paragraph: "Protection domains can also be constructed from an intersection of the associated subjects (e.g., Windows 2000 Restricted ...
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3answers
37 views

OS/Host age as a security attribute

Assuming the following: Operating arbitrary software in a completely read only environment is impractical. (While some software will operate RO without issue, it can be nigh impossible for other ...
0
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4answers
69 views

Isolate dual system

Say I have a computer with 2 operating systems: one secure, one... not so much. Now say I want to use the insecure system to do some work I can't do on the secure one. What is the best way to isolate ...
1
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3answers
471 views

Debugging and DLL-Injection

Hi, I am currently reading Gray Hat Python to learn about Debugging and various interesting techniques for binary analysis. So far I have learned an amazing amount of stuff (just read about ...
1
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0answers
41 views

Multiple Independent level of security vs Multi-level security

I am looking for a way to isolate two different networks from each other. Suppose we have 2 different network (public and private). I am looking for a way to connect to these two network via single ...
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2answers
77 views

How to use encryption on proprietary software

I wonder if it's possible to develop a secure point to point encryption application (a pgp message application for example) on a proprietary software. If such an application was developed, let say on ...
0
votes
2answers
155 views

How to identify a specific operating system with port scans?

According to the implementation of the TCP/IP stack an attacker is able to identify which operating system is running on a network device. Is there any paper or the like according on this topic?
2
votes
1answer
1k views

Where does Active Directory store user hashes?

During a penetration test for a client, having an infrastructure with multiple (5) Active Directory Servers (Win Serv 2008 R2)... I found a nice exploit to drop a system shell in one of the servers, ...
0
votes
1answer
101 views

Do the Linux binary blobs contain any intentional security holes?

This question covers the risks of accepting Binary blobs in one's distribution. This may be a very paranoid conspiracy question. But considering all the topics regarding the NSA in 2013 one cannot ...
8
votes
3answers
1k views

Practical non-government uses of Biba, Bell-LaPadula, etc. models

For example, the Biba model is now hanging out in current versions of Windows. Things downloaded from the Internet are tagged as such. Internet (low) stuff can't alter user (medium) stuff which isn't ...
8
votes
7answers
1k views

Is there any asymmetrically encrypted file system?

Is there a file system providing a directory where everybody can write, but only the directory owner can read the files? In theory it could be done by encrypting using the public key while writing, ...
2
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2answers
333 views

Basic Security Knowledge [closed]

Perhaps I am being both naive and overly ambitious in my first post but I have a huge interest in learning about network and system security and am at a loss as to where to begin. I realize that stack ...
2
votes
4answers
456 views

Tails like OS for Smartphones

In Jacob Applebaum's latest talk at the 30c3 conference, he advised all journalists to use Tails or similar OS for their laptops. Does anyone know of a similar OS or functionality for Smartphones? ...
11
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7answers
1k views

Can hackers detect my operating system?

I've seen people demonstrating the use of backtrack to attack VMs. In one of the components of backtrack, it shows the operating system of the targets. Since support for Windows XP is ending soon, i ...