Related to security concerns specific to the Microsoft Windows operating system itself. For security of applications that happen to be running on Windows, please use [appsec]. For the X Window System, please use [x11].

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107
votes
8answers
15k views

Are there technical differences which make Linux less vulnerable to virus than Windows?

What makes Linux so different than Windows in terms of anti-virus needs? My question is not if I should get an anti-virus for my Linux. I perfectly understand why an AV is important. I would like ...
29
votes
3answers
188k views

How do I clear cached credentials from my Windows Profile?

Windows seems to be saving my credentials for a variety of applications (terminal servers, etc) and I'd like to purge this data. How can I backup and purge this data?
37
votes
7answers
7k views

Does a virus need to be clicked on to function?

Can a virus infect my Windows XP operating system by its mere presence? I mean, if I copy/paste a virus on my computer and I never click on it, will it infect my computer or will it remain dormant, ...
12
votes
3answers
6k views

Detecting reflective DLL injection

In the past few years, malware (and some pen-test tools like Metasploit's meterpreter payload) have begun to use reflective DLL injection (PDF) to load a DLL into the memory of a process. The benefit ...
6
votes
7answers
8k views

Physical computer security, how to disable USB ports when the computer is 'locked'?

Lets say my PC & server is in an environment where a theoretical attacker has physical access to the machine while I'm not there. Now the data is encrypted on the hard drive with TrueCrypt. ...
20
votes
3answers
4k views

How can I tell if I have the citadel virus without downloading an antivirus?

I recently received an e-mail from Virgin Media indicating that I might have the Citadel virus. It obviously sounds like a fake e-mail, but I am almost certain it is genuine, as they had my name and ...
18
votes
7answers
1k views

How to deal with a person who gets easily fooled by internet and mail scams?

alternative title: How to deal with a person who has gotten paranoid and doesn't want to go online anymore? A person, who has over the years been scammed many times, by bad spam/fraud emails, and ...
5
votes
3answers
5k views

Where do I securely store application-specific symmetric key?

I am writing an application App1. This application uses SQLite database and I plan to encrypt it using AES256. For symmetric encryption I need a key, which I need to store somewhere. From a similar ...
5
votes
5answers
2k views

what is the best keylogger for security uses? [closed]

Today we were robbed. A thief come to our home at night and stole some stuff including my brother's laptop. I think that the right thing to do is to download a keylogger on my PC, just in case... I ...
20
votes
1answer
2k views

Is it secure to connect to a remote Windows Server using Remote Desktop only?

I have a Windows Server that I login to from my home. I only use the pre-installed Remote Desktop. Is this a secure way to remote login or should I improve it in some way? If I should improve it, ...
15
votes
4answers
5k views

Three-Factor Authentication for Windows

This HowToGeek article... http://www.howtogeek.com/67556/how-to-unlock-your-pc-by-being-nearby-with-a-bluetooth-phone/ ...got me thinking. Is there any software (or combination of software) that ...
14
votes
3answers
17k views

How do I ensure data encryption on Samba transmission on *NIX systems?

I have a heterogeneous system (both MS and *nix) that communicates with CIFS/SMB. How can I ensure proper data encryption at the application layer?
10
votes
3answers
2k views

How can I mitigate the threat that DPAPick poses to my DPAPI protected data?

The Windows Data Protection API (DPAPI) is the suggested method for storing secrets on Windows systems (such as database passwords required by ASP.Net applications). DPAPick was presented at BlackHat ...
5
votes
1answer
418 views

How do I continue pentesting with access to local station?

I started learning hobbyist penetration testing a while ago, and as far as penetrating a computer I have physical access to, all is good. Mainly using Hiren bootCD, it is easy to gain access to an ...
4
votes
3answers
125k views

How to detect if files were saved or copied to a USB drive?

How can I find out if files from my computer were written/copied/moved to a USB storage device? I want to know if there is a solution that would work in a system that has not got any ...
15
votes
2answers
424 views

How much of a problem is it that Windows “hides” some of the trusted root CA certs?

Based on information on this page, Windows actually trusts many more root CA certificates than what are displayed when a user launches certmgr.msc and navigates to Trusted Root Certification ...
10
votes
3answers
554 views

What security requirements do you have for Domain Administrators?

With regard to managing a Windows network, what security polices and processes do you use? For example Do you require/support Smart Card Authentication? Restrict logins from a particular ...
8
votes
1answer
130 views

How can I protect myself against software installing insecure root certificates?

With the recent news that Dell installed a root certificate with a publicly accessible private key on their notebooks, I'm wondering how I can protect myself against this kind of incompetence. Of ...
6
votes
1answer
3k views

Can a certificate have multiple chains and multiple self-signed roots?

The following MSFT document has this paragraph: All possible certificate chains are built using locally cached certificates. If none of the certificate chains ends in a self-signed ...
5
votes
3answers
2k views

Can a physical attacker compromise a Windows machine with UEFI, secure boot and bitlocker?

Machines such as the MS Surface Pro 3 comes with bitlocker encryption and UEFI secure boot out of the box. However, the default boot order is network -> usb -> ssd. If an attacker gets physical ...
5
votes
1answer
5k views

AIA/CRL locations for Offline Root

I've read the answer to the following "Checklist on building an Offline Root & Intermediate Certificate Authority (CA)" and I have one questions based on the system I am trying building It's an ...
5
votes
2answers
9k views

Automating PGP encryption? (Windows)

Let's say I have daily files that need to be encrypted using PGP (and then emailed) and I want to automate this task. I would be using Windows PowerShell to manipulate the files (examine date/times ...
4
votes
7answers
582 views

How to completely remove all traces of a file in Windows 7?

I'm curious to know how to completely erase all possible traces of files in Windows 7. For example, let's say I have a subfolder containing five different files at work deemed sensitive (A document, ...
2
votes
3answers
2k views

Task Manager and Keyloggers

I know that some of the best keyloggers can't be viewed from the Task Manager. Where can one see if such keyloggers are running on the system? Will they be in the Windows Services or are they hidden ...
9
votes
3answers
1k views

How can TOCTTOU vulnerabilities within the Windows OS be mitigated?

What are some ways to mitigate the time-of-check-to-time-of-use issues that apply to Windows permissions? Example: End-user is added to the local Administrators group in order to install software, ...
7
votes
3answers
36k views

Windows Firewall - how to block inbound for all .exe files in a folder

In Windows Firewall with Advanced Settings I can create a rule which blocks all inbound or outbound traffic for particular program by pointing to its .exe file. The problem is that this program has ...
7
votes
2answers
2k views

Breaking out of a strict linux sandbox running virtually under windows: do the linux-sandbox access control policies even matter?

I am developing an application which will run untrusted code. I have been designing it for linux, thinking that I can just run it in a virtual machine on windows when the need arises. The linux ...
4
votes
1answer
137 views

Impersonating a computer in a Windows domain

I've been trying to wrap my head around how computers are identified and granted access to a Windows domain. More specifically, I've been asking myself if whatever mechanism is involved really ...
4
votes
1answer
662 views

Does sandboxie “grab” all the system calls?

Sandboxie: http://www.sandboxie.com Does sandboxie "grab" all the system calls, e.g.: filesystem calls? Or it "grabs" all the low level calls from a process?
4
votes
3answers
1k views

Windows Honeypot user account for tracking laptop

I've been wanting to create a dummy "Honeypot" user account on my Windows 7 laptop in case of theft. My question is: Has anyone come across useful resources and tips for doing this? Is there a way ...
2
votes
1answer
2k views

How does a developer interact with Microsoft Certificate *Web Services*

Microsoft Certificate Web Services is a HTTPS web service (WS-Trust) that has no Kerberos dependency and can be used on a variety of devices. This is new in Windows 2008 and is separate from the ...
10
votes
1answer
3k views

Why is Windows Explorer making external connections?

McAfee is seeing Windows Explorer (explorer.exe) establishing connections to external IPs: Also verified with cmd: C:\Windows\system32>tasklist|find "explorer.exe" explorer.exe ...
8
votes
6answers
2k views

Using linux to combat windows flash drive malware?

I just put an old flash drive which i used with a windows machine into my linux. I noticed many files, mostly exes which were never visible in windows (my windows does not hide hidden files and ...
6
votes
1answer
104 views

Can windows domains be faked?

Without the equipment and software (and knowledge yet) readily available to test myself, I've been wondering about the relationship between computers and domains in a Windows environment. Some ...
6
votes
2answers
962 views

Does KASLR really provide more security against exploits?

I know all about how ASLR works, and how it has been implemented on both Linux and Windows systems. It provides an extra layer of protection that malware has to take into account. But nowadays with ...
6
votes
3answers
915 views

How to effectively (and reasonably) secure Windows in corporate environment.

A member on my staff recently had their work computer compromised while on their home network. The following is the information regarding their computer Windows XP SP3 - fully patched at the time of ...
5
votes
1answer
164 views

What are the differences between “simple” UAC and two user accounts on Windows?

I'm currently thinking about increasing security on my Windows machine. As part of this harderning I considered the least-privilege principle and want to apply this on Windows using two different ...
4
votes
2answers
166 views

How do I protect my passwords from WebBrowserPassView?

I just got shocked with what can be achieved with WebBrowserPassView. It basically shows every password I've saved in my browser (Chrome). I guess other users on my PC could get my passwords that ...
4
votes
2answers
280 views

Decrypting SSL using Wireshark Linux vs Windows

I'm working on decrypting my own traffic that gets sent through Wireshark and I've been following this guide for reference. I have been using the SSLKEYLOGFILE environment variable and I can get the ...
4
votes
2answers
223 views

Is using a “Red” and a “Green” browser to balance LOB requirements and security a good approach?

I currently work in a manufacturing company with round about 5000 computers and 6000 employees. We use a lot of web based line of business applications (all internal, non over the Internet) in order ...
4
votes
1answer
2k views

“Extended Protection” primer and implementation guide to prevent MITM

Extended Protection (link) (link) is a feature in Windows 7 and Windows 2008 R2 that prevents certain MITM attacks. Does anyone have a primer (or explanation in plain English) what this feature is, ...
3
votes
2answers
621 views

enumeration and MS DCERPC

Enumeration, enumeration, and even more enumeration is the generic pentesting mantra, but enumeration is worthless if you can't read the results. I came across the Windows RPC service, where ...
3
votes
0answers
2k views

What is a self-contained cross-platform encryption for USB drive? [closed]

I'm trying to find self-contained encryption solution for USB drives while at the same time being platform independent. For example, Windows' BitLocker only works on Windows and not on OS X or Linux. ...
3
votes
1answer
326 views

How do I use Windows 7 virtualization features to prevent transitive trust of admin credentials?

I am exploring using VMs to separate my administrative actions from standard user actions in Windows 7. The goal is to limit my risk and exposure when using "RunAs" to open an application or file ...
2
votes
1answer
545 views

Can someone explain, in simple terms, how the FREAK attack on browsers works?

Is there a reason it only affects browsers on Windows machines and not Mac's or UNIX/LINUX environments? A lot of the wording on this site is particularly complicated and I don't understand fully what ...
2
votes
2answers
307 views

Manual Checks for Signs of Infection on Windows 7

Suppose I wanted to run some manual checks to see if my Windows 7 machine has been infected. I don't usually do anything to get it infected, but I would like to check whether the below steps are ...
2
votes
2answers
5k views

how to identify p2p on network

Im trying to work out if the traffic in the below image is P2P file sharing? If you notice the source ports are all random but the time 17.24 from c.port 58338 runs for a good length maybe about 400 ...
2
votes
6answers
306 views

What are possible approaches and arguments for securing corporate IT systems with most computers being portable?

I was employed as the only system administrator by a company where half of computers are portable ones being taken away for work at home, business trips, visits to clients, etc. having access to ...
1
vote
2answers
453 views

Is monitoring registry hives enough to detect new malware installation?

Is checking the state of the supporting files of the Windows registry hives enough to detect if a new software/malware has been installed on the computer or a given Windows regsitry key has been ...
1
vote
3answers
26k views

Multiple running instances of rundll32.exe

I've noticed that in the Task Manager of Windows 7, I have multiple running instances (2) of rundll32.exe. Does this necessarily means that my machine is infected by a malware as noted here: ...