-1
votes
2answers
284 views

Android OS Security [closed]

I am somewhat confused in terms of how secure Android OS is and how updates work on Android. Are there security fixes on each release? How can I keep track for Android exploits and what are the most ...
1
vote
1answer
289 views

What is the purpose of Rb in the 3rd step of the 3-pass mutual authentication in ISO/IES 9798-2?

Recently I am studying ISO 9798-2 Three-pass mutual authentication. There are 3 steps, as following: B -> A: NB // B sends to A a "nonce" value NB A -> B: {NB||NA}K // A's identity is proven ...
1
vote
3answers
534 views

Where can I find all SSL CA certificates

I am working on an SSL implementation project and ofcourse I need to verify the certificate presented by the server. To do that I need CA certificates or at least root CA certificates (correct me I am ...
1
vote
0answers
231 views

SIEM DSCC - Upgrade Fails and then web console doesn't shows anything [closed]

Since trying to patch, we can not access the Web Interface, the Console page is empty. We also tried to upgrade trough CLI but it returns this error messages Checking for undeployed changes... ...
0
votes
1answer
159 views

Security risks monitoring JMX

I am doing an internship at a big company wich create industrial automated systems for some big company's. They want me to design a way to monitor all the Java based control modules. Now I am going to ...
-1
votes
1answer
958 views

Afraid about SSH on my Linux system

I've checked my Linux server (Centos 6) with rkhunter. I found the following in rkhunter log [14:38:54] Checking if SSH protocol v1 is allowed [ Warning ] [14:38:54] Warning: The SSH ...
6
votes
4answers
1k views

Can a PGP private key be deduced if the email text is known?

Suppose I send a PGP-encrypted email to person A, and the same email (same subject line, same message text) unencrypted to person B. Suppose a secret service intercepts both messages. The secret ...
1
vote
2answers
216 views

Main requirements to secure my Application in any database related features

I have an application which is hosted on a windows server on which an SQL DB exists. This server communicates with the clients and agents installed on host PCs through TCP/IP and SSL connections. I'm ...
2
votes
2answers
394 views

Using a virtual machine as a buffer between USB media and OS

I was directed here from the Unix & Linux site. I've gone through some of the related questions, but they seem to be more concerned about whether a guest OS can access the host OS in someway. ...
2
votes
2answers
195 views

Which IP / Client is being Ddosed?

I currently have some Vps's and shared hosting plans with a few hosting providers. Recently one of my shared hosting accounts was suspended due to a denial of service attack. I understood why they had ...
3
votes
3answers
833 views

Flash ignores Content-Type header, allowing XSS?

I recently read that the Flash plugin ignores the Content-Type header in certain circumstances. In particular, you can give Flash a URL, and the Flash plugin will happily fetch the content at that ...
1
vote
3answers
339 views

What information can be seen from HTTPS to HTTP?

Assuming a secured page https://google.com/redirect.php?keyword=apple which redirects the visitor to a non-secured website http://apple.com, would an eavesdropper (anyone watching over the network) be ...
-4
votes
5answers
2k views

Google Calendar has events that I didn't create and it's not shared

This has been rewritten because at first I thought this may be an accident but now it’s clear there’s a security compromise. In my Google Calendar I noticed an event that occurred each day from ...
2
votes
1answer
539 views

CRLF Injection into Web Page

I was pen-testing a site recently which I found a few issues in, and this continues to a previous question I asked about Null-byte string termination in web applications. I have noticed that the site ...
-1
votes
1answer
204 views

Permutation in Block Ciphers

I was reading some e-books to understand the basics of block ciphers and how it works in AES. As i understood, Permutation plays a big part in AES and Block Ciphers, Here is what i understood by ...
0
votes
6answers
278 views

Why does everyone require certain password characters now? [closed]

I understand that passwords with varying cases (upper and lower) as well as numbers and special characters are much "stronger" and harder to crack than those that are short and all lowercase or ...
5
votes
1answer
2k views

Hotspot with same SSID, how does authorization work?

My university has a wireless network I log into with my username and password. It's using PEAP. My phone and laptop automatically connect to this SSID when they detect the network. If someone sets up ...
2
votes
2answers
247 views

Reducing crypto-random values to a useless entropy

Supposing I have generated random data from CryptGenRandom (or similar PRNG), at what point does futzing with the values make it not-so-random that it's useless? Or is sufficiently random in enough to ...
-1
votes
2answers
118 views

Pad encryption against eavesdropping

In regards to security, Why is one-time pad encryption unconditionally secure against eavesdropping? Also, why does the triple DES use an Encryption-Decryption-Encryption combination rather than an ...
7
votes
4answers
5k views

User name enumeration?

From what I understand it is bad security practice to display informative failed login messages like: The email you entered does not exist Instead of Incorrect email/password combination ...
3
votes
3answers
286 views

What is the job of an IT auditor?

I am going through training in information security, as a part of the course they included compliance standards like: PCI DSS ISO 27001-2005 Cobit framework So after searching over Google, I came ...
0
votes
1answer
145 views

How to fetch and update all my friend's keys? [closed]

Where can I upload a list of my friends and get a list of their keys found on keyservers? Here are some key servers: http://keyserver.ubuntu.com:11371/ http://pgp.mit.edu/ ...
1
vote
1answer
215 views

Which are open problems on policy-based access control system?

I'm working on access control system and on analysis tools for reasoning on it. In A.C. system based on policy, think about XACML specifications, the overall behaviour of the system cannot be clearly ...
2
votes
3answers
629 views

Insert string to memory with null character

I'm trying to implement return-to-libc, here's the code void func(const char *str) { char buf[4]; strcpy(buf,str); printf("you entered [%s]\n",buf); } int main(int argc, char *argv[]) { ...
1
vote
1answer
306 views

SSH authorized_keys

Can you correct me on this. I create a keypair on my PC. Copy the public key (append to authorized_keys) on the server. Disable password auth on the server, and SSH to server from my PC. I have ...
3
votes
4answers
528 views

What are the features of Dual EC DRBG that are lost when using a different cipher?

Due to a potential NSA backdoor, the NIST is now recommending that implementor no longer use ECC-based PRNG Dual EC DRBG. (As described in Wired.com) this PRNG has certain features such as: ...
10
votes
2answers
752 views

How can a network observer identify computers running old versions of Java?

I received an email earlier today from my ISP (a university). The email reads (in part): Your network connection has been disabled because your version of Java is not patched for the most recent ...
1
vote
3answers
190 views

Reading to Decide on a career switch [duplicate]

I have a strategy consulting and sales background, but what I read about IT and IT Security sounds fascinating as an outsider. I'm considering a career switch, but would need to know quite a bit more. ...
6
votes
1answer
1k views

Web Applications terminate strings on null-byte

I have just been doing some penetration testing on a site, and I have noticed (and I have noticed before but now seems like a good point to bring it up) that putting a null byte in the search string ...
4
votes
3answers
885 views

accepted naming convention for public keys/certificates

Is there an accepted naming convention for referring to PKI artifacts? There seems to be a lot of confusion with naming of artifacts. For example, it seems that some people refer to: public keys ...
4
votes
2answers
1k views

Is cookie information hackable by “Man in middle” Attack over HTTPS?

Just I want to know, is it possible to extract header data by 'Man in middle attack' in HTTPS connection and is there any other way or hack to achieve same thing? If there is way to hack, is it ...
3
votes
1answer
363 views

Is running a Windows service as a (standard) user a risk?

I plan on creating a domain user account that will be able to log on as a service, but have only the minimum requirements for this service to function. of course this could be misconfigured, but ...
8
votes
2answers
8k views

1024-bit DHE vs 2048-bit RSA

Currently with apache/mod_ssl, if DHE is enabled then a 1024-bit ephemeral key will be used. I found the following quote in Adam Langley's blog: Ideally the DH group would match or exceed the RSA ...
1
vote
2answers
152 views

How to “normalize” an html file?

Given an HTML file, the content of which was generated from various websites, it could have potential security problems, like: <script>alert("XSS alert!")</script> Q: What can we do to ...
4
votes
1answer
690 views

Is it possible to detect host-machine of my virtual-machines?

So basically I need to know is there any way to find a connection (or relation) between packets sent by my VMs and my host machine. In my lab I have lots of workstations, each running a VirtualBox ...
-1
votes
1answer
431 views

Man in the middle attack [duplicate]

How data can be modified in a man in the middle attack? is there any video demonstrating that,any how to guide,i need practical material ,i have used cain and abel,ettercap but now i am strucked i ...
0
votes
1answer
172 views

how secure is an iPhone 4S+ with iOS 6+ in 2013?

I was searching for the current status of iPhone security: there are many discussions on the subject but a lot of them are mostly hand-waving or related to old bugs/iOS weaknesses. How secure an ...
2
votes
1answer
2k views

Why: Default salt and cipher seed value at Cake PHP Framework?

I am wondering, why in cake php framework, they include default values for this variable: salt cipher seed I found these default values while doing application review (white box approach). And I ...
1
vote
2answers
381 views

Storing Seed for TOTP

We have a public website for employees which has access to some sensitive company information. To make the login process more secure we want to implement TOTP. The setup and implementation has been ...
0
votes
2answers
714 views

E-Commerce website with REST backend : do I have to secure Backend URLs accessed by Front end public pages?

I have an e-commerce website with a REST backend and a Single page JS as front end. I intend to secure my REST backend with OAuth2. I don't want to oblige the user to authenticate when he first comes ...
11
votes
6answers
6k views

Practical and Secure use of KeePass

Currently I'm using KeePass as my sensitive data manager. I use just a main password to encrypt the database, but it is not very secure: 9 characters, lower letters and numbers mix with no meaning. ...
1
vote
1answer
92 views

Securing WebHosting Shell Access

If I provide SSH access to users who has paid webhosting service, what security measures should be applied ? What I can think of: SSH keys RSA of 4096 size (shall be secure for a while) Apache ...
1
vote
2answers
307 views

Could a user never store a password if a username/email hash was used instead?

So I was just thinking about token_authenticatable setup from devise (rails gem), and this thought occurred to me: Could we strengthen web security by hashing username/password with javascript before ...
18
votes
3answers
883 views

Any comments or advice on OWASP-2013 top 10 number A9

In this iteration of the OWASP top 10 application security vulnerabilities list (https://www.owasp.org/index.php/Category:OWASP_Top_Ten_Project), a new category 'A9 Using Components with Known ...
1
vote
1answer
272 views

Functional Specification for Common Criteria EAL 1 evaluation

I want to write a functional specification for CC EAL1 evaluation, There is an example in CC part 3 document but it is not enough complete, Are there any template or sample of a functional ...
-3
votes
2answers
928 views

How to tell what encryption is being used [closed]

How do you tell encryption algorithm used by reading its output? Here is the one I am trying to figure out Åbd$ý ...
3
votes
2answers
2k views

Using multiple keyfiles in truecrypt

I have a truecrypt container who's main password is 20+ characters long. I don't know if the keyfiles are still necessary for further improving the security. But anyway, I have folder of some .jpeg ...
3
votes
3answers
1k views

Ethics question, post-publication of 'DIY hack' that implies security hack

I've read this post at length, but I believe this question is subtly different. Consider this scenario: a municipal, non-profit organization has a website with authentication (username, password). ...
0
votes
3answers
1k views

Elaborate Hacking attempt detected - now what?

I am in the process of developing a php/mysql based web application. I took the complicated route and rather than to use a framework or anything I built the entire foundation of my app from scratch. ...
6
votes
2answers
1k views

How does dnsleaktest.com find my DNS provider

Can't see how they find this over the web. I'm on Windows, its in my network config. It changes when I use a VPN provider, but not when I use a local socks proxy connected to a remote server over ...

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