1
vote
2answers
580 views

Can a TCP connection with a VM be “escaped from” to reach the host? [duplicate]

Possible Duplicate: How secure are virtual machines really? False sense of security? If a VM (e.g. VirtualBox) on host A opens a TCP connection to a hacker Z, are there any possible ...
0
votes
2answers
109 views

Looking for information about CVE-2006-6876 vulnerability

In order to study vulnerabilities of a SIP server and the impacts of DOS attacks on the QoS of VoIP service, I have found this vulnerability which can be exploited to cause DoS on SIP server. But I ...
2
votes
2answers
1k views

Hardening a perimeter router

What are some of the steps that could be taken to harden a perimeter (internet facing) router from attacks by potentially malicious users?
3
votes
1answer
70 views

How to install client securely?

I'm writing a program in PHP that sends data from one master to many clients (all Joomla websites). When the client software is installed, it should send a message to the master identifying itself, ...
2
votes
2answers
378 views

How to properly secure OO PHP CMS?

I have OO PHP application which serves pages as well it does payment card processing via external RBS payment gateway. There is also reporting database. The problem is when somebody exploits this PHP, ...
6
votes
1answer
625 views

What governing body is responsible for the use of GSM SMS alphanumeric SenderID's?

Currently, I am writing a paper about GSM sender spoofing and how this flaw is possible with the use of different techniques and attack pattern in the GSM 2G implementation both technically and ...
8
votes
3answers
20k views

How to prevent my website from getting malware injection attacks?

My website was banned as a malware website by Google. When I checked the code, I found out that some code injected many files on my server. I cleaned everything manually, edited all files on my server ...
15
votes
3answers
12k views

What's the advantage of using PBKDF2 vs SHA256 to generate an AES encryption key from a passphrase?

I'm looking at two comprable pieces of software which need to encrypt data on disk using a passphrase. One uses PBKDF2 to generate the encryption key from a passphrase, while the other uses two rounds ...
4
votes
2answers
695 views

MX record Man In The Middle Attack?

In theory it should be possible to change a MX record of site A (aspmx.exampleA.com) to site B (aspmx.exampleB.com) and send the mail back to site A (aspmx.exampleA.com) So you can intercept all the ...
1
vote
1answer
275 views

Blocking direct access to ajax source

I made a calculator. I want to prevent that people can use the ajax.php to get the results without accessing the webpage. They have to use the API for that purpose. I suppose I can add a key ...
5
votes
3answers
249 views

How to best present 'Security Vulnerability Feedback' to devs in the IDE (like VisualStudio)

I posted today a pretty cool PoC where I was able to provide real-time 'security vulnerability feedback' to a developer as he is writing code in VisualStudio. You can see the video at Real-time ...
1
vote
2answers
167 views

Can a biometric device serve as a user based entropy source?

I am wondering if a biometric device can be used to generate some entropy or key material that would be stable across each authentication. The contrary would be for biometric devices to act like an ...
3
votes
2answers
736 views

Risks of serving untrusted content under HTTP Content-Type: text/plain?

Am I gonna run into XSS attacks by doing this, or will a file download be prompted? Are there security problems that would rise in a modern browser?
1
vote
1answer
357 views

Is Oracle gathering information from my machine when I download Virtualbox or Netbeans?

When we try to download Netbeans or Virtualbox from the Oracle/Sun site, our firewall warns us that some suite called EdgeSuite tries to obtain information from our machines. I don't know what ...
9
votes
2answers
17k views

Is NAT Loopback on my router a security problem?

Some DSL routers prevent NAT loopback. Security is sometimes cited as the reason. Is NAT loopback really a security issue? And if so, how is this exploited? NAT loopback... where a machine on the LAN ...
2
votes
3answers
2k views

Why would you do a password audit

I was thinking last night after reading an article about pen testing and security audits, why would you get a list of all the passwords for the company you are auditing and put them through a piece of ...
2
votes
3answers
4k views

Tracing an IP from a mobile broadband ISP

My honeypot caught a hack attempt from an IP that was issued by Three Mobile Broadband (UK). My immediate thought was that most probable explanation was that the user was in the UK and had his ...
6
votes
3answers
672 views

Are online hash calculators dangerous?

I was about to use an online MD5 checksum calculator when I realized that my result could be added to a database. This is significant because the string I was going to type in was my bank password. ...
7
votes
3answers
955 views

How should I choose a difficulty factor for my password hashing function?

Assuming that I'm doing password hashing properly and using bcrypt, scrypt or PBKDF2, how should I go about choosing an appropriate difficulty factor? i.e rounds for bcrypt, iterations for PBKDF2 and ...
17
votes
3answers
9k views

Can someone get my WPA2 password with honeypots?

Yesterday I went to my cousin's home and I saw that I'm not connected to his wireless (for internet access). Then I have looked up the list of wireless points. I have found his name and clicked it ...
1
vote
2answers
318 views

Securing a VPN connection

I'm new to this we want to install a new VPN connection that will be used to connect using Internet to some networks in the office the contractor want to use a" Cisco NAC Network Module or Cisco IPS ...
2
votes
4answers
541 views

Fingerprinting Hash Function

For the purpose of fingerprinting data with the least chance of collision will combining the length (as a 32 bit unsigned integer stored in addition to the hash) of the input data and/or sampling a ...
1
vote
1answer
786 views

Smart card compatible with Schlumberger (Gemalto) Cryptoflex 16K and USB reader

Another question related to previous ones A SW system constructed with Microsoft CNG can be FIPS 140-2 Level 2 Compliant? and About performance of Smard card for performing 3DES in a MD5 hash We need ...
1
vote
1answer
463 views

About performance of Smart card for performing 3DES in a MD5 hash

Another question related to previous, unanswered A SW system constructed with Microsoft CNG can be FIPS 140-2 Level 2 Compliant? Another alternative is to store the keys in a Smart card permanently ...
3
votes
4answers
4k views

Determining the point of compromise on an infected web server?

Recently a friend of mine has had his web server compromised - all PHP files were injected with malicious code, in particular one that looks to be called "GetMama". If I look this up, it seems that ...
21
votes
5answers
1k views

Hashed password storage with random salt

Ever since I've been making sites that require a user to log in with a username and password I've always kept the passwords somewhat secure by storing them in my database hashed with a salt phrase. ...
1
vote
1answer
109 views

How to detect suspicious tokens collected by a hacker

I previously asked a question here What's the use of adding a challenge in the otp algorithm? Let's suppose that a hacker has succeeded to collect tokens. Is there a way to detect suspicious ...
4
votes
1answer
1k views

Is using decrypt_derived more secure than a keyfile?

Say I have two partitions on a Linux system, a root partition (/) and a /home partition. Both of them are encrypted with LUKS. The /home partition needs only to be decrypted if / is unlocked and ...
8
votes
2answers
3k views

How can end-users detect malicious attempts at SSL spoofing when the network already has an authorized SSL proxy?

I'm working on one client's network where they have enabled HTTPS authority spoofing on their proxy. This allows them to effectively perform a man-in-the-middle attack to decipher all outgoing ...
4
votes
2answers
519 views

Are sandboxes overrated?

I've stumbled upon the following on the blog of the NoScript developer Giorgio Maone. First, he quotes the following ArsTechnica article about an XSS bug in Adobe Flash: As useful as sandboxes ...
4
votes
4answers
448 views

Malware that uses http as a covert channel

I'm working on a http traffic analyzer and I need a collection of malware, which uses http as a way to get commands and respond, to analyze their network behaviour. Is there any database of malware, ...
1
vote
1answer
367 views

Which software scans software for potential vulnerabilities?

Is there any kind of parser-software-analysis tool that will analyze c code and outputs possible vulnerabilities like buffer oveflows?
1
vote
4answers
409 views

Learn about network and security for securing a server

I'm setting up an OpenBSD server that I want to connect to the Internet (it's going to be used to host a site - so, with Apache, SQLite and the like). I want it to be as secure as possible. Social ...
-3
votes
1answer
214 views

What is the interest of Reverse Proxy? [closed]

I have read many explanations on reverse proxy I still don't understand the interest. Could someone really explains in plain english
0
votes
1answer
447 views

Differentiate normal flow and broadcast attacks

How do you identify whether a broadcast traffic is normal or is considered an attack such as a DoS attack?, There is some information that the plot or the source that allows me to differentiate ...
1
vote
3answers
547 views

Client side scripts through proxies

If you're trying to hide your IP address using VPN/proxies can a website using client side scripting record your real ip? If yes is there any alternative to blocking all scripts as that breaks ...
4
votes
1answer
62 views

Are viewable permissions an issue?

Is it, generally, considered to be a security issue if a user in 3-tier application has read-only access to other users' permissions? I.e. Alice can see that Bob has or has not access to some ...
30
votes
9answers
51k views

How does Google Maps know where I am, when I'm using a VPN?

How does Google Maps determine my location? I've gotten some understanding of Google Maps' geolocation methods from here: http://friendlybit.com/js/geolocation-and-google-maps/ In the newer ...
10
votes
1answer
10k views

Does Google Chrome protect against cross site scripting (XSS)?

In Firefox I've been using the NoScript extension to protect myself from certain kinds of malware attacks. NoScript is well known as a very powerful extension for Firefox and introduced protection ...
4
votes
3answers
1k views

Is a company website secure against sslstrip if it doesn't use ssl on homepage but ssl everywhere else?

Most ecommerce websites use SSL/TLS when you want to log. But most have homepage using http only. Is it enough to have SSL/TLS on login page and logged page to prevent sslstrip ?
0
votes
3answers
805 views

Proxy Server options for school administrators [closed]

I want to set up a proxy server for a school to prevent users to log-in to site like Facebook, Youtube, etc. I have no idea how to do this, so I´d really appreciate your help.
8
votes
4answers
1k views

Alternative to “web of trust”

Let's say I have an SMIME platform where I want to easily establish trust across the entire world for a particular purpose, for example for sharing valid financial information. I think that a ...
16
votes
3answers
1k views

How secure is Microsoft-mandated UEFI Secure Boot, really?

I've read a few articles recently about the UEFI Secure Boot feature, and how Microsoft will be requiring it to be enabled by default on all Windows 8 certified x86 systems. In theory, it sounds like ...
3
votes
3answers
543 views

What pros and cons are there to a one-time random salt between client and server?

In researching on best practices in hashing passwords using a salt I came across a presentation on slideshare. The approach outlined is as follows Client requests login page Server-side code ...
2
votes
4answers
1k views

Should links to images contained in emails be secure?

We are generating emails which contain links to images: our client's branding, images showing other products offered by the client etc... What are the security pitfalls if these links in the emails ...
3
votes
2answers
2k views

How to use RC4 securely

I want to encrypt my network communications with RC4. The reason for choosing RC4 is the simple implementation and speed. I need to have a pure Python implementation, because I cannot compile for my ...
2
votes
1answer
658 views

Intepreting PE (Portable Executable) headers of suspicious malware files

I am starting up on malware analysis, and I am analyzing a file to see if it is packed or obfuscated. Using PEview I am examining the .text, .rdata and .data headers. I know that if there is a big ...
0
votes
0answers
36 views

more justification for the impact scores used by the national vulnerability database [duplicate]

Possible Duplicate: why CVSS give a score of 0.66 for a full impact on CIA? Good day ; the CVSS attributes the following impact values ​​for confidentiality, integrity and availability: ...
1
vote
1answer
85 views

How many connections can TCP_WRAPPERS handle?

As we know that TCP_WRAPPERS is a good way of security on linux/unix system, to disallow or allow remote user to connect to the specific services. Assume that if there have a large number of ...
-5
votes
1answer
4k views

efficient 16 bit hash [closed]

I'm looking for a way to make a 16bit ID out of approx 100 bits of data. The solution should be easy to implement, or should already be implemented in c++, should be quick to evaluate, and most ...

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