17
votes
1answer
13k views

What is the actual value of a certificate fingerprint?

In a x509 digital certificate there is a "certificate fingerprint" section. It contains md5, sha1 and sha256. How are these obtained, and during the SSL connection, how are these values checked for?
4
votes
2answers
358 views

Can a MitM attack occur on an ISP's local exchange or street wiring cabinet?

If an attacker were to dig up the 'outgoing feed' from my local exchange or the street cabinet, could they sniff my entire neighborhood's network traffic? Or is this infrastructure secured against ...
25
votes
3answers
32k views

How to fix SSL 2.0 and BEAST on IIS

As you can see on this post TeamMentor.net vulnerable to BEAST and SSL 2.0, now what? the app I'm currently development got flagged for SSL 2.0 and BEAST by SSL Labs. I'm using IIS 7.0 with the ...
0
votes
2answers
535 views

is it possible to test out remote host by using nmap?

I was trying to test out my friend's computer (with agreement) by using nmap remotely. But the result I got seems kinda awkward to me. It only showed 1900 as tcpwrapper and all other ports were no ...
4
votes
2answers
201 views

Is this a safe way to connect to a server

I am using a software to backup my website .sql data every 3 days and it connects simply to the server logs in and downloads the .sql file to my computer. While its downloading the connection is not ...
2
votes
1answer
211 views

Maximum protection on a computer network?

I would like to secure as much as possible a computer I am using to sync sensitive data files from work to my home pc. The syncronisation is being done by only 1 software is there a firewall to allow ...
6
votes
3answers
2k views

Disadvantages of metasploit Framework for windows

Are there any explicit disadvantages in comparison to running it on a UNIX machine these days?
17
votes
1answer
3k views

How safe is backtrack to use?

I've always used backtrack for security assessments, it's a great toolbox. The thing is since it's a toolbox to exploit things, have their been any reports of "bundled" spyware in standard backtrack ...
2
votes
2answers
891 views

Looking for a presentation about information security for corporate employees

I'd appreciate if you could recommend me a presentation the describes the dangers and possible solutions and guidelines, when using the Internet. Specifically, in corporate settings. I would need to ...
3
votes
1answer
1k views

Requirements for a secure session id?

I'm writing a web service which stores data which will be shared between two separate systems. /session/requestNewSession?args=<data> => returns session id ...
1
vote
1answer
190 views

Stripping / appending characters from user password before hashing to conceal it forever?

I had this idea to permanently conceal user password by requiring minimum length then stripping certain characters. For example if the user password is secret123, the system will strip it down to ...
0
votes
1answer
1k views

Backtrack 5 R2-64 bit cannot load database (postgres) help required?

I want some help regarding use of autpwm feature in backtrack 5 R2. I'm using bt5 (64 bit) on my dell inspiron N5110 laptop. I downloaded the copy fresh from the website and running it as dedicated ...
4
votes
3answers
977 views

Pseudo Random Generator is not initialized from the (entropy pool)?

The RHEL5 manuals state that /dev/urandom will use the entropy pool until it's exhausted, and then it will resort to a fall-back pseudo-random algorithm, so that it will never block. But when ...
7
votes
2answers
1k views

Would an unnecessarily long password degrade performance of a WPA2 wireless network?

My friend wants to keep his home network super-secure, due to some trouble that he's had with unwelcome Wi-Fi intruders. So, naturally, he devised an ultra-long WPA2 passphrase (on the order of 100+ ...
6
votes
1answer
851 views

Injecting ampersand to the url

Let's say there is a program sending some data to server via GET: http://server.com/gateway?value1=abc&value3=def Then the server sends these values further, adding value2: (python code) ...
3
votes
4answers
852 views

HTTPS Everywhere vs. NoScript

What does HTTPEverywhere gives compared to NoScript with Firefox (Options|Advanced|HTTPS|Behavior)? Why use HTTPEverywhere, when NoScript also can strict websites to use only HTTPS?
2
votes
4answers
12k views

How Team Viewer establish Remote Desktop Connection

I am wondering how is it possible for Team Viewer to establish the remote desktop connection over the internet even if the user has not enabled the 3389 port ? I am searching over the internet but ...
4
votes
2answers
4k views

Is your PGP passphrase used to decrypt an encrypted private key, or needed in conjunction with the private key to decrypt the message?

If the former, then if the private key can be used to digitally sign messages, why doesn't your client offer to encrypt this highly sensitive piece of data? If the latter, then if someone had access ...
1
vote
3answers
928 views

Wireless LAN router fingerprinting

Does anyone know of a database that lists the range of MAC addresses that are assigned to each particular brand of router? I would like to use this information for fingerprinting. I know I can find ...
9
votes
3answers
1k views

Hashcash, is this really used?

I just heard about this term, is it really used? The concept does not seem new, is it used and/or implemented in current technologies?
3
votes
2answers
129 views

Does site need SSL to resend info to a site that does use SSL?

Let's say I have a website isellchicken.com, this site needs to be able to collect sensitive user information like credit card details. This site will not process the information, but will send it to ...
0
votes
1answer
465 views

Metasploit Exim4 String Format Overflow

The string format exploit affecting versions of Exim <= 4.69 cannot be used when Exim is running on port 465, considering authentication is required to relay messages through the mail server, ...
-2
votes
2answers
259 views

Will winlock virus really delete information after 12 hours? [closed]

I've got virus which tells that all data will be deleted after 12 hours. I cleaned autorun and now scaning my computer with anti-virus, but still is this message just to scary people or is this virus ...
2
votes
3answers
1k views

How can winlock virus change Windows Registry without admin permission?

When you try to install program you'll always asked about administrator permission. Same thing when you try to user 'regedit' command. So I'm interested in how does this virus works. How can it edit ...
0
votes
3answers
140 views

Network Concerns Over a MITM Attack

If my website is hosted on a network of hundreds, possibly thousands, of computers wouldn't an attacker have to gain control of just one of them in order to conduct a MITM attack on my website ...
3
votes
4answers
2k views

Can a session be hijacked if the user is redirected from HTTPS to HTTP after login?

I am developing a web app, which makes HTTP calls as long as the user is not logged in. Once the user clicks the login button, he is sent to a "login page" that is HTTPS. The login makes an Ajax call ...
3
votes
2answers
678 views

Can key files be brute-forced like passwords?

Let's say you use a program like Truecrypt or Keepass which allows you to have a password + key file. I understand that passwords can be brute-forced/dictionary-attacked but is the same true for key ...
2
votes
3answers
198 views

Theft of data via live boot disk

I have been working with live boot disks recently and I know that it gives you access to the computer's processing power, internet, and various other tasks without the hassle of a username/password. ...
5
votes
4answers
6k views

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 = ...
3
votes
1answer
461 views

What is chrome.googleechotest.com?

I use chrome (dev channel) on mac osx lion and every now and then it tries to access chrome.googleechotest.com on port 80 (EDIT: and other ports!). Anybody knows what is the deal with ...
5
votes
2answers
296 views

Are more passwords breached via dictionary/bf attacks or via packet-sniffers/key-loggers?

This question has always intrigued me whenever the subject of passwords is brought up. Does anyone have direct experience or a reputable source to answer what percentage of password breaches are ...
21
votes
4answers
17k views

Multi-boot with full hard drive encryption and pre-boot authentication

How would I set up a multiboot system which supports full hard drive encryption and pre-boot authentication. I have a system with Ubuntu, Windows 7, Windows XP, and I would like to install Red Hat. ...
-2
votes
2answers
2k views

What are the limitations of vulnerability scanners?

What are the limitations of vulnerability scanners? If it is related to how these scanners work, how these work?
2
votes
3answers
1k views

Reviewing IP(s) that has been blocked by firewall / router

Is there a best practice on how to review IP(s) that are blocked on firewall / router and determine if they are safe to be removed from banned list? Occasionally, the firewall guys see a high counts ...
10
votes
3answers
4k views

What are the risks of storing passwords in a GPG encrypted file?

I currently store my passwords in a text file encrypted using GPG -e (specifying my own public key). When I want to lookup a password I'll do something like gpg -d passwords.gpg | grep ...
5
votes
1answer
2k views

Can the TrueCrypt hash be slowed down?

I have read that TrueCrypt uses ~2k SHA-1 hashes on the password. The iteration count is part of the TrueCrypt specification and is 2000 for SHA1, 2000 for RIPEMD-160 and 1000 for Whirlpool ...
3
votes
3answers
2k views

Cleaning a virus by mounting the infected hard disk on another machine?

I have a laptop that has been infected with a virus. I am thinking of taking the disk out of the laptop, putting it into an external disk enclosure, and connecting it to a second laptop so I can run ...
5
votes
1answer
1k views

Is this admin area secure enough? V2

This is a response to my previous question, Is this admin area secure enough?. There were some very helpful answers there, for which I am very grateful. So I went back to the drawing board and here ...
-2
votes
3answers
152 views

Is cracking really important systems possible?

We always hear about "hacking" (or cracking) banks, websites or the like. Nothing really "important" like centrals, or even satellites (like TV channels). Those we only see in movies - but are they ...
6
votes
1answer
574 views

Haskell and Happstack security

I'm currently investigating Haskell as a platform for secure web development. I'm leaning toward happstack for the web framework part, but I'm also investigating yesod and snap. My gut feeling says ...
6
votes
4answers
2k views

Does a CA need to have the same type of key as the certificates it is signing? RSA / Elliptic Curve (EC/ECDH/ECDSA)

I am making a CA that I hope to be able to sign RSA and Elliptic Curve-capable (EC) keys with. I was wondering if the best approach was: CA with RSA keys capable of signing RSA and EC CSRs CA with ...
5
votes
4answers
1k views

Do password complexity requirements reduce security by limiting search space?

I've read that password complexity requirements make passwords easier to guess via brute force attack. The reason for this is that the complexity requirement actually reduce the search space for brute ...
1
vote
3answers
511 views

Monitoring and filtering of arbitrary outgoing data

I would like to be able to not just centrally monitor but also filter any organizational data moving out our edge routers, regardless of the sender application and regardless of the protocol/port used ...
7
votes
1answer
473 views

Sulley - optional element and command check

I'm currently using Sulley to fuzz my FTP server, but I'm having problems. I want to specify the STRU command, which has a syntax: STRU [<SP> F|R|P] <CRLF> I tried to specify the ...
7
votes
3answers
3k views

Secure sync of TrueCrypt containers

Need to sync arbitrary files within two TrueCrypt containers; one container is a backup, the other the one actively used by me, both are local during the transaction. Current concern security wise is ...
4
votes
3answers
449 views

Is this admin area secure enough?

EDIT: Please view the revised question instead The admin area has special access to the database (modifying orders, etc). To help explain, I drew a diagram, so here is my process: Notes: I ...
1
vote
3answers
241 views

will all instrusion dectection will become host-based? [closed]

Will all intrusion detection become host-based once all network packets have been encrypted?
2
votes
2answers
367 views

Why superuser or administrator account should never locked?

Why should administrator or superuser account never locked regardless how many incorrect login attempts are made? What should be done instead to alert the staff to the attempted instrusion?
-1
votes
1answer
379 views

What time do dictionary attack take on salted passwords?

I was reading that the designers of UNIX password algorithm used a 12 bit salt to modify the E-table of the unix hashing function (the DES). Supposing i have a system with 2^(24) users? Is that ever ...
3
votes
1answer
133 views

Suddenly scans for 'formvars.php'

Suddenly, starting from about yesterday-evening (gmt+2), I get lots of -what I suspect are- 'hits' from bots that are looking variations of this file: /somerealpath/includes/formvars.php I'm ...

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