A family of graphical operating systems produced by Microsoft. Windows includes both server and destop operating systems. Early versions relied on MS-DOS while current versions have evolved from Windows NT. Please do not use this tag for X, but use [x-windows] instead.

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Introduction/refresher course on Windows security [closed]

Can someone point me to a blog or recommend a book with an introduction (or refresher course) to Windows security. I am not a newbie programmer, actually have more than 10 years of experience, with a ...
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360 views

Advice for writing my first application security review

I wish to write a security review for a specific windows server/client application that runs on a closed LAN or WAN (between 1 and 200+ users across multiple sites); it's not a web-application. The ...
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1k views

Password History/Password policy

I'm referring to "remembered" password that the domain keeps so a user cannot reuse that password until it has expired in what was set at Password Policy on DC (W2003/W2008). Where is password ...
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335 views

How can I detect users that have requested AD Administrators to reuse an expired password?

There is a trend among companies I've worked at where administrators (or helpdesk folks) give a user a courtesy extension of the old expired password... rather than forcing the user to change it. ...
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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 ...
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166 views

Windows Vista user logon integrity

Is it possible to delete some or all user session logon datetime records from Windows Vista? Is there any mechanism to give me confidence that individual records aren't deleted even if there isn't a ...
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2k views

How does a client authenticate the domain controller

On an active directory based network how do hosts authenticate the Domain Controller? Is it possible for an attacker to impersonate the Domain Controller? PS: I'm having a problem getting info on how ...
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1answer
960 views

IPSec Domain Isolation with Windows Server

I'm looking for a good way to secure my servers, I have a set of dedicated servers that are not in my office but hosted by an external provider. ALL the servers have only one public (WAN) IP. I don't ...
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3k views

What's the risk of changing permissions of the Security Eventlog registry key to IT operations?

Background Many developers are unnecessarily lowering the security of the event log, or requiring applications to run in Administrator mode just so they can use the event log with this C# or VB code: ...
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Should I only disable, but never delete an account from ActiveDirectory?

In the early days of NT4, I would never delete an account from the domain because I would lose the correlation between the SID and username in event logs and all related audit trails. Is this a ...
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6k views

Recover Server 2008 R2 Domain Admin Password

So I did the ultimate silly thing: I lost my domain admin password for my Server 2008 R2 box. Sure, I could just re-install but that's going to be a huge pain. I tried rebooting with the Windows ...
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1answer
280 views

Does DPAPI works if a user hasn't a login password?

I was wondering if the DPAPI will still work properly if a user doesn't have a a login password (like most of the home users). I can't find this information on Google or in the official documentation ...
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Preferred UAC configuration in Enterprises that use Login scripts to map drives

In Windows 7, Vista and newer OS's, UAC will prevent logon scripts from mapping hard drives so that the following logon script code won't work: Dim WshNetwork Set WshNetwork = ...
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What are the risks associated with relying on IPSec IP Filtering?

When using Windows IPSec for IP filtering whenever a filter is added you need to have a "mirror" rule (by checking the "Mirrored. Match packets..." tickbox). Because IPSec Filtering is not stateful, ...
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1answer
1k views

Windows mandatory access control: How to remove “mandatory level” label from the file?

1) How to remove "mandatory level" label from the file? I have two files, for first icalcs return Mandatory Label\Medium Mandatory Level:(NW) for second icalcs doesn't return anything (that means ...
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179 views

Which Windows Files Should be Monitored by HIDS?

I highlighted my question below. Here is some background. It's easy to find data showing the most commonly trojaned/modified Linux binaries and config files. ps, ls, find, kill, lsof, passwd, ...
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How do I make or get computer certificates to use with IPSEC user authentication on Windows?

I am having trouble and need some direction using computer certificates with Windows 7 firewall IP Security rules, using certificates only for user authentication. I can get everything to work ...
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1answer
12k views

What is updated with “Update Root Certificates” enabled? What is the equivalent in Windows 2008R2?

What root certificates are/are not updated when the following checkbox is checked? Additional questions If I manually remove a root certificate, will this service replace that very certificate? ...
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1answer
161 views

Should I install my subordinate Certificate Authority on the domain controller? Why?

I must install a PKI in my organization. I work in a windows environment. I already set an offline CA. I must now install a subordinate CA. I have the choice between installing the subordinate CA on a ...
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364 views

CTF competitions/challenges that are Windows based?

I've been messing about in CTF's for a while and I also do pen-testing professionally, what i've noticed is a distinct lack of CTF competitions using windows environments. This is in stark contrast ...
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736 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 ...
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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 ...
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How secure is Windows Auto-Logon?

Obviously, if auto-logon is enabled, anyone who can gain physical access to the PC can use the PC. That's not the question. The question is, when I enable auto-logon for my Windows 7 box, will there ...
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602 views

Unknown Asian/Chinese registry keys

On a Windows Server 2008 machine found registry key "潓瑦慷敲卜湹潣敶祲" under HKEY_CURRENT_USER of the administrator account. It contains a value "敓癲捩剥湵楮杮" of type REG_DWORD which is set to 0. I scanned the ...
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What is the background of the Reference Counter Overflow in Microsoft TCP/IP (MS11-083)?

How unique is this bug? Is there a more sophisticated and well-studied attempt behind? Is it accidence? The article below says "continouos stream to UDP". What stream? Just an hour stream of zeros? ...
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What is the easiest way for a newbie to RSA to create & use a key pair on Windows?

So I need to get a block of text sent to me over email from a friend, but before he sends it he wants a public RSA key from me. Am wondering what is the simplest way for me as a newbie to generate ...
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Application to monitor software activities

I am doing black box testing on a software which is installed in my local machine. I want to analyze and see the list of files and registry entries that software create/modify/delete. Basically ...
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Is it possible to catch a virus on my LAN without clicking on anything?

My unpatched PC running Windows is connected to a network which contains other "infected" computers, can I get infected by viruses without any interaction on my part?
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356 views

Security of login-data saved in browsers

Most browsers provide an option to save login-data for later use. Suppose a Windows workstation is located in a well-protected corporate LAN and only a well-defined set of application can be launched ...
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3k views

I am always Hibernating my System, is there any risk for my Encrypted drive with BitLocker?

I am Always Hibernating my Laptop, for faster booting, I encrypted sensitive drive by BitLocker, what if my Laptop stolen and attacker knew that it was in hybernate mode, can he decrypt my hard?
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3answers
615 views

Virus with PGP Encryption Preventing Virus Scan

A user reported having a virus that was causing pop up windows asking for money. When he turned on his laptop and logged into PGP encryption (whole disk) the desktop quickly showed but then a white ...
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1answer
2k views

Server monitoring for security

We do a lot of web hosting management and have started to get into selling server management packages. However, we want to start monitoring servers for security related threats. Our clients may use ...
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568 views

Further potential problems with Windows 8 SmartScreen

Some research was recently published that showed that Windows 8's SmartScreen feature sends certain details about every single application that you install to Microsoft. Ignoring the obvious privacy ...
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692 views

Are non-personal AD users a security risk?

After an IT audit of my company, the report said that our Active Directory contained too many non-personal user accounts. This caused a risk of misuse and unauthorized user access. I checked my ...
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95 views

Code-signing application from different locations

In our company, one of the software group is using a certificate from a trusted provider to sign their drivers manually on their local machine. My group wants to start to sign our installers and some ...
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1answer
11k views

Setting up Windows laptops to require a smartcard for unlocking

I am looking for details on how to secure a windows laptop using smart cards. The scenario is that we have laptops in vehicles, which remotely connect (via https) to an application server over the ...
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ASLR and how a program can actually call its functions

I'm studying protection techniques and I've got a doubt about how ASLR works for a program in a Windows environment. As far as I know ASLR works by randomizing part of the imagebase address when ...
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Why does Windows 7 require a password hint during setup?

Correct me if I am wrong, but I think Windows 7 is the only operating system out there that requires a hint for the first user created on the system (have not had a chance to check out Windows 8 ...
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194 views

DPAPI and malware

I'm considering using the Windows DPAPI to protect an ECDH key I use to encrypt some data in a local database in a Windows desktop application. I'm new to DPAPI, but its my understanding that DPAPI ...
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4answers
5k views

How to make / dump contents of memory for forensics analysis?

I work as a Information Security analyst and was recently tasked to look into Incident response + computer forensics related topics. For starters, I am experimenting on my PC which is running Windows ...
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582 views

Added value of Windows Server 2008 over 2003 in terms of security

What is the added value of a Windows 2008 Server over Windows 2003 in terms of security? Does Windows Server 2008 has enhanced/new security features compared to 2003?
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1answer
225 views

How to protect against viruses that takes files as hostages by encrypting them?

Today I was infected by CoinVault, a new malware similar to CryptoLocker I believe. Before today I was unaware of this entire type of malware. Fortunately I was protected by offline backups, but I ...
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173 views

What is the risk that Windows 8's loopback protection feature protects me from?

Windows 8 requires Fiddler to set up an exemption when sending traffic to localhost. Since this is a default setting (and affects many computers): What security benefit does this provide How can I ...
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863 views

Windows Authentication and Session Ids

After a penetration test made upon an intranet application I'm developing, in ASP.NET MVC, one of the concerns raised was that the application supports concurrent user sessions and it is recommended ...
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2answers
918 views

Are there any Windows permissions management applications?

I am currently dealing with permission issues with an IIS app pool. I am tired of clicking through window after window to set permissions on folders for domain and local users. Also, I would like ...
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1answer
448 views

How did my homepage get changed in IE?

I have rarely used IE in the past. I just use it to test how a website looks. Today all of a sudden when I went on to open IE, it opened with a homepage that wasn't set by me. It was an address of a ...
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2answers
203 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 ...
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Detecting or preventing process memory injections on Windows (anti-hack)

Standard hacking case. Hack injects into a started game process and writes over process memory using WriteProcessMemory call. The situation is like this: we are hosting a game server clients join ...
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675 views

Is a self signed certificate sufficient to prove the integrity of my executable?

I have an EXE file on Windows that I have to distribute around. It's based on tclkit so an adversary could unpack it, change some tcl script inside and repack the exe. I would like to know if this ...
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Strategy against browser exploits on Windows?

On a friend's computer is some kind of spam bot installed. It sends messages like Hello: I received my apple iPad 32GB ordered on an online shop (www.elevalley.com ) today. So exciting ...