5
votes
3answers
4k views

How to detect whether my network's key is being attempted to be cracked?

I use WPA2 encryption. But I know even that can be cracked with the aircrack suite. And a lot of users may not use strong passwords. I've read that while cracking WIFI keys the only noticeable ...
6
votes
4answers
847 views

One time password over SMS - exposing the Authentication Server to the internet

Consider a Internet Based Website which does authentication. The Web Application can do the authentication by calling an Authentication Server which is not connected to the internet. The ...
-3
votes
1answer
147 views

Infection risk downloading one’s own file from Gmail

Say you boot into Linux from a brand new Live USB. The USB is write protected. The memory stick has never been exposed to the Web in its life. You surf all day on Firefox building your library of ...
1
vote
1answer
305 views

End to end cryptographic methods/solutions

I want to implement secure communication for my application. The A sends a message/data and B receives it. The message should be encrypted so the internet provider would not be able to read it even if ...
4
votes
1answer
1k views

Authenticate users through Google using only an OAuth2 access token

I have a question about having users logon to my service using their Google Credentials. I've gone through the Using OAuth 2.0 for Login documentation provided by Google. The documentation mentions ...
1
vote
2answers
172 views

Mysql database password and webform password

I have a Mysql database where one table is meant to store user complaints/comments/suggestions. I am using Mysqli to connect to the database with a $con=mysqli_connect("myhost","myuser","...
2
votes
1answer
3k views

Windows' default certificate store for intermediate vs trusted root certificates - my self signed root CA cert goes to 'intermediate' by default?

Is it possible to create self-signed root CA certificate that Windows will import to Trusted Root by default instead of Intemediate certificate store ? Obviously, it won't do it without the big giant ...
3
votes
2answers
464 views

Is it possible to automate use of passphrase-encrypted private keys?

Suppose I have a public/private keypair, which I would like to use to serve HTTPS from a webserver. The part I'm worried about is this: the private key is encrypted with a passphrase, so that if an ...
1
vote
1answer
442 views

When a browser extension or user script pulls a JS file from Google's CDN, how does this compromise the user's privacy in terms of Google's reach? [duplicate]

The context from which my question has arisen is this user script which locally removes ads from Ixquick.com, which is an anonymizing 'proxy' search engine that gives the results from Google's index ...
2
votes
2answers
2k views

Safe user/group for rsyslog to read application log?

I have an application which writes a logfile in /var/app/applog.log. This application has to be launched as root, but runs as app:app and can also be demoted to nobody:nobody What exactly is nobody:...
-3
votes
1answer
200 views

US Export Laws (Encryption Cloud Service) [closed]

Okay - so I have been extensively looking into US export/import laws relating to encryption software (5D992), however I have a few questions about the laws and their applicability. So, the laws ...
6
votes
3answers
2k views

How can salted, hashed password storage be combined with a plaintext, nonce and hash based authentication?

My understanding is as follows: To securely store a password (e.g. in a database), you use a hashing algorithm designed for this purpose (designed to be slow, e.g. bcrypt), and you use a unique salt ...
1
vote
2answers
488 views

Can hackers access wireless traffic between me and my ISP?

The computer and the router are located inches apart in my study. An Ethernet cable connects the router to the roof antenna. The antenna talks to the ISP, 5 km distant. I know from experience a ...
20
votes
8answers
4k views

Should a site have SSL if it doesn't have a login form?

We have a site at work that is used for the following: Our homepage, which is just some info and contact info. Job applications are also handled on our site. There is no place where you can login ...
3
votes
2answers
7k views

Checking if TLS 1.1 and 1.2 implementation in a webserver is upto standards

I am testing a webserver[proprietary] which offers SSL support and they say it supports TLS 1.1 and 1.2 which i have verified by firing requests from IE with only the target protocol enabled . ...
8
votes
2answers
26k views

Windows groups and permissions: Authenticated Users group meaning

What is the purpose of the "Authenticated Users" group in Windows? Under Linux it doesn't exist and I'm starting to think this is another idiosyncrasy or over-engineering of the Windows operating ...
11
votes
3answers
11k views

How can I securely convert a “string” password to a key used in AES?

I'm writing some software where I have to encrypt all files that are written to a specific folder using AES. There is one password/key that is configured somewhere, that is always used. I don't want ...
7
votes
6answers
419 views

How important is it to protect demo data by HTTPS enabled server?

If the application is not in production mode, there is no commercial contract signed with customer yet, and you just want to give a link to the customer (or give the demo yourself) so that they can ...
3
votes
1answer
2k views

How to remove ssh rootkits? [duplicate]

I checked my linux server with rkhunter, I got following warning messages, ... [00:35:35] Found file '/usr/include/gpm2.h'. Possible rootkit: Trojaned SSH daemon [00:35:35] ...
3
votes
3answers
732 views

How to diagnose and handle unexplained open network connections?

I was using Wireshark in order to check the activity of an unknown client in my home network, and to my surprise, I found some strange connections established by my own computer. I disconnected all ...
2
votes
0answers
1k views

Security instructions for a mobile banking REST API

I am designing a .NET Web API-based REST API that would be accessed via a mobile banking-like app. We plan to use OAuth 2.0 Resource Owner flow for authorization. All requests will go through HTTPS ...
1
vote
1answer
2k views

How do I generate a blowfish password hash in Ubuntu?

What's the command line to generate a blowfish password hash? I can't seem to figure this out at all. Apache's htpasswd only supports bcrypt, and openssl passwd doesn't even do blowfish hahes (but it ...
5
votes
2answers
15k views

How is SAML solving the cross domain single sign-on problem?

Let's say I have two websites that live on separate domains, and their service providers both talk to the same identity provider on a third domain. I log into the first website and authenticate, and ...
10
votes
3answers
9k views

How exactly is MD5 vulnerable to collission attacks?

I've often read that MD5 (among other hashing algorithms) is vulnerable to collisions attacks. I understand the collision part: there exist two (or more) inputs such that MD5 will generate the same ...
10
votes
4answers
636 views

How can I audit which type of Block Mode encryption is being used when no source code is available?

Given that there are clear advantages to using some block modes of encryption over another, and I would like to ensure that all software used in the enterprise uses a certain "level" of security I'd ...
5
votes
1answer
923 views

How to get other people's bcrypt hashes to add to htpasswd file

I need to restrict some webpages to certain users and I do this using a .htpasswd file through nginx. The problem is I need to add other people's bcrypt password hashes to my .htpasswd file. Would it ...
26
votes
6answers
8k views

Most secure way to partition linux?

I recently acquired a netbook to play with, and I want to install Kali Linux so I can start learning about network security and exploit development. I want to use this to learn as much about security ...
16
votes
5answers
10k views

SSL/TLS - Distinction between self-signed cert and self-signed CA, and other questions?

I have a small personal website which I wish to serve securely over HTTPS. At the moment I do not wish to use a third party CA to sign my certs. I was reading this document on generating a self-signed ...
7
votes
5answers
11k views

Encrypting All Network Traffic

For a corporate network, is there a way to possibly encrypt all network traffic on the local network? I would like to ensure that there is nothing left for chance to be packet sniffed. Not even e-...
5
votes
2answers
596 views

How do indirect, session-specific resource tokens increase security?

The OWASP web site recommends this: Use per user or session indirect object references. This prevents attackers from directly targeting unauthorized resources. For example, instead of using the ...
3
votes
1answer
3k views

Storing session key for iOS app

For an iOS app that communicates with a RESTful service over HTTPS, should the session key be stored in Keychain or NSUserDefaults? Username and password are stored in Keychain, and it would seem ...
4
votes
2answers
102 views

Securing an appliance

Scenario: We are in the position to offer a local appliance to run a version of our proprietary software, which is normally provided as SaaS. Question: What steps can be taken to mitigate trivial ...
5
votes
5answers
3k views

What are the advantages of multi-level authentication?

By multi-level authentication, I am referring to the fact that the user makes use of a primary username password keypair to log into his account. Then, to perform some other actions, such as authorize ...
3
votes
1answer
562 views

PCI compliance simple questions

For now I read PCI compliance document and I don't understand any things. I have a program, which takes sensitive and cardholder data as input (some of them are in encrypted form) and then returned ...
-7
votes
4answers
1k views

How can I use linux and disguise myself as a windows computer over a LAN? [closed]

My computer is currently running windows XP on a LAN Network. I'd like to use linux but I want to hide myself. I don't want to be the only linux system on a network full of windows XP computers. Is ...
7
votes
3answers
706 views

Should password be cleared after unsuccessful logon attempt?

Lets assume following workflows a) On a device with keyboard: I type my username and password Press enter [realization] I made a typo Password field is cleared: not a big deal, I can type ...
17
votes
7answers
2k views

Taking password letters not whole one, is this secure? [duplicate]

I found a site which is taking password letters from their users not the whole password. Is this secure? Or do they have saved password as salted hash (MD5)?
3
votes
1answer
5k views

How to encrypt a short string to a short ciphertext using an asymmetric encryption?

I am using RSA to encrypt some text, so my system has already generated private and public keys. These keys I would like to use to encrypt/decrypt a short text (16 chars). The main condition is: ...
11
votes
2answers
170 views

Does Centralisation Decrease the Probability but Increase the Damage of Exploits?

This question is, perhaps, a tad too abstract for a Q&A site. But it's been playing on my mind for a while, so I'm throwing it out there. Modern systems seem to be increasingly centralised. An ...
6
votes
3answers
8k views

Is a self-signed SSL certificate much better than nothing? [duplicate]

I have a server which hosts my own internal code among other things. Since it's only me using it, I've generated a self-signed SSL certificate and key, hoping that it'd give me a bit more security ...
5
votes
2answers
3k views

Event monitoring for a home network

I'd like to utilise some of the free SIEM type products out there to increase the chances that I will detect attacks and compromises of any of the devices on my home network. Most of my home devices ...
2
votes
0answers
289 views

Implementing ACS with REST + many Identity Providers - Problems - Azure

I am trying to integrate ACS to use in my application's authentication system. Currently I have a Javascript client and a WCF so I had to use a REST architecture. I am quite puzzled on how to do ...
2
votes
3answers
475 views

Is + as an alternative to %20 an attack vector?

I was reading a Q&A on enabling + characters in URLs for Sitecore CMS, and the answer states: ASPNET application does not allow using “+” from the security point of view e.g. preventing SQL or ...
2
votes
2answers
123 views

What CWE can be used to best describe ASLR being disabled on a process?

I am in the process of writing up a vulnerability report for a thick client application. One of the findings for the executable is ASLR being disabled. As part of reporting, I'm required to provide a ...
4
votes
3answers
640 views

Encrypted files storage. How to simplify the password management scheme?

It's probably dublicate but I can't figure out the correct keywords for search. You can help by just telling me those words, I'm rather good with Google :) I want to develop somewhat like file ...
0
votes
1answer
799 views

Comprehensive & current book on native application exploit research & development [closed]

Is there a 'must read', comprenhensive book on native application exploit development? Covering the process of finding vulnerabilities (fuzzing, reverse engineering, code analysis, etc...) & ...
1
vote
1answer
1k views

Using Apple NSKeyedArchiver class without encryption to save score data locally

first of all I'm sorry for my bad English! I have a question about the security of NSKeyedArchiver, a subclass of NSCoder of Apple Foundation.framework (https://developer.apple.com/library/mac/#...
-2
votes
2answers
253 views

need guidance for cybersecurity job [closed]

I'm 17 yrs old and I'm Thai. I have been in a military school and I really love computer stuff especially security stuff. My question here is what should my career be and what could I study now as a ...
8
votes
2answers
1k views

Gamification of IT security - any applications yet?

Gamification, which is the use of game design elements and game mechanics in a non-game context, is a heavily discussed topic. Looking at the behavioral impact on Gamification, it has potential in ...
8
votes
2answers
3k views

Preventing LSASS from storing clear-text passwords in Kerberos environment

It is a well known security risk that LSASS stores clear-text passwords if a user has performed a keyboard-interactive logon on a machine - be it local login to his/her workstation or using RDP to a ...

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