1
vote
1answer
525 views

how to handle error reply messages?

For security reasons, many organizations do not allow error reply messages to leave their internal Internets. How, specifically, could hackers use information in echo reply messages to learn about the ...
15
votes
6answers
14k views

Why are iframes allowed at all in modern browsers?

I read a number of IT security blogs (though I'm no security expert), and it seems a significant percentage of exploits in the wild are delivered through adding malicious iframes to a hacked website, ...
2
votes
1answer
1k views

How configure tomcat 7 SSL to use AES-NI?

My server has AES-NI and I would like tomcat 7 to make use of this but I am not really sure how to make that happen or where to even start looking. I am quite familiar with tomcat administration, and ...
3
votes
4answers
2k views

How to prevent attacks against client side validations?

I have a login form where am accepting Mobile Number of the User for login. When Mobile Number is submitted, am calling a JavaScript to validate the Mobile Number. My client side validations ...
64
votes
10answers
6k views

Does disabling right click have any impact on security?

On a banking website I see that they have disabled right-click. Does that make the site any more secure? Is it a good general practice?
21
votes
2answers
38k views

How can I tunnel through an SSH server for application layer protocols such as HTTP/s and FTP?

Are there client programs that allow me to "tunnel" through my SSH enabled server for normal Internet requests such as HTTP(s)? If so what are they and can someone point me in the right direction? ...
7
votes
3answers
455 views

An OS that does not trust its RAM?

I wonder if it is possible to write a kernel that would keep all of its RAM encrypted, storing the key in the CPU cache, so that the machine would be resistant to cold-boot attacks?
2
votes
3answers
145 views

Is password authentication worse that signed messaging if done over SSL?

Let there is a public API: HTTP-based via SSL there are no browsers, just connections between custom written programs The first authentication scheme that came to my mind was... client signs their ...
4
votes
2answers
267 views

Ethernet security

I have a simple question that many people probably have and yet there does not seem to be a topic on this. I am visiting a company for a meeting and I have my laptop with me. This company is our ...
3
votes
2answers
2k views

IP forgery (theories are fine)

Is there any (practical/theoretical) way to forge your IP address? By forging i mean feed to the WEbsite the IP you want. let take PHP as example: You need me to think that your IP address is ...
2
votes
1answer
115 views

What is the purpose of the hashcode used in Exchange OWA HTTP requests?

This blog describes the URLs that are used in OWA and webservices. It also says that there is a hashcode that is used in conjunction with the throttling policy. Is this hashcode responsible for ...
4
votes
4answers
2k views

Database hardening techniques

So as I understand it database hardening is a process in which you remove the vulnerabilities that result from lax con-figuration options. This can sometimes compensate for exploitable vendor bugs. ...
0
votes
1answer
142 views

Did I get hit by the recent Java exploit?

Looks like the website iphonedevsdk was responsible for serving up the malware that's been causing some of the recent security exploits. According to my browser history, I visited that site back in ...
3
votes
3answers
148 views

Arguments that proof a hashing scheme is sufficient

We're currently working on a new server application that is going to communicate with client applications on many different systems. For this we wanted to implement a new password hashing scheme. ...
8
votes
1answer
3k views

Why do X.509 certificates have “Key Usage” attribute?

I can find their values and all details in the RFC, but I cannot find why it was decided to have this attribute in certificates, instead of leaving them to be multipurposes. Is there a reasoning ...
7
votes
4answers
2k views

SQL injection Are there any instances where a vulnerable url would not contain an 'equals' (=) symbol

I have a question I'm hoping you could help with? I am looking to filter/grep a very long list of spidered url's from my site to only get the url's that could possibly be vulnerable to sql injection. ...
2
votes
1answer
1k views

Google Chrome stores recent items I've opened in my computer?

Is it normal or legal for chrome to have a list of recent items I've opened in my computer? I have an old version of chrome installed in my PC. Then recently, I downloaded a newer version. But before ...
3
votes
2answers
325 views

Confidentiality and integrity for web session

When the client authenticates with our service, he is issued an opaque "token". This token includes the information, that identifies the client and some other information about the client ("payload"). ...
3
votes
1answer
159 views

nmap: why is it “silly” to combine OS finding option (-O) with bounce scan (-b)

If you run an Nmap FTP bounce scan with nmap -O -b, nmap will do the scan, but it says that the scan "seems silly" before it starts. Why would the scan be silly? It actually appears to report a ton ...
5
votes
3answers
13k views

Why does an nmap -sT scan show ports filtered but -sS shows ports closed

What are possible reasons why an nmap -sT scan would show "ports filtered" but an identical nmap -sS scan shows "ports closed"? I understand that -sT is a full TCP Connect, which is easier to detect ...
0
votes
1answer
304 views

What is this spam bot trying to do by filling in my PHP forms randomly? [duplicate]

I have been getting a lot of bot spam lately. The most recent one has this as the body: already to standards Address is is required return ? then with local include accurate Another they in ...
0
votes
1answer
84 views

How esignature verification process work?

I have a web application in which the users will be signing an html report. I know how the digital signature authentication works. But here the user will literally be signing the document (So, Should ...
5
votes
1answer
488 views

How genuine are password entropy calculations?

I apologise for perhaps the confusing title, I'll try and elaborate a little better. Many discussions I see surrounding password entropy focus on the specific context of the range of choices ...
5
votes
1answer
137 views

Are we obliged to provide a complete log should auditors ask for it?

We have a system that outputs and rotate logs on a daily basis. If an auditor requests us to provide logs of a particular date for a particular task, are we obliged to provide a complete full day ...
2
votes
1answer
2k views

How to verify DNSKEY by using its corresponding DS

A DNSKEY on a name server can be verified by using it DS stored on its parental name server. According to RFC4034: The DS record refers to a DNSKEY RR by including a digest of that DNSKEY RR. The ...
2
votes
1answer
141 views

What's the point of rejecting a cookie?

When you access a website, lynx provide the option to reject a cookie, what's the point of doing so? All I thought about is that if you don't accept a cookie, you cookie won't be stolen during a XSS ...
0
votes
1answer
2k views

What AES mode does SQL Server 2012 use?

I looked at this link that shows how to encrypt a SQL column via a certificate (RSA??) and AES256. I created a dummy table (script at GitHub) intentionally using identical plain text (Credit Card = ...
7
votes
1answer
3k views

My site just got hit with a SQL injection attack, how can I tell what they were doing?

So a page on my site (it's a PHP page that displays newsletter articles) was vulnerable to SQL injection and got hit. I discovered it because it was doing enough database queries to cause the CPU load ...
0
votes
2answers
248 views

Tracing root compromises

In regards to the following: 0day Linux/CentOS SSHd Spam Exploit — libkeyutils.so.1.9 SSHD Rootkit There apparently seems to be a bunch of redhat server being backdoored via a library. Does ...
5
votes
2answers
313 views

Passphrase using same word several times

I used a trivial 3-letter dictionary word five times in a row (smth similar to pwdpwdpwdpwdpwd), and am surprised to find my self in the list of hacked accounts in a penetration test using a ...
0
votes
1answer
296 views

Windows 7 File Patching, Custom Visual Styles

In order to apply custom "visual styles" or themes in Windows 7, you must patch a few system files including Explorer. I can see from the start how this could be a potential security problem, but how ...
2
votes
2answers
432 views

Suspect Exchange Server appears to be hacked. How to determine if it was a false positive?

Our security vendor detected that our client's CAS server was doing a nessus scan in the internal network. It's not uncommon for this vendor to issue a false positive, but I'm looking for general ...
3
votes
1answer
291 views

Is RDP an effective security barrier

If you need to provide access to a GUI / GUIs in one network from within another network, can RDP (e.g. via Terminal Services) be used as an effective security 'barrier', to stop any other direct ...
5
votes
2answers
11k views

How X509 Certificates are used for Encryption

I have small doubt regarding the process of X509. I am aware of OpenPGP Encryption/Decryption, where we generate the public key and private key. We can share the public key to vendors and they can ...
1
vote
2answers
151 views

non-periodic event detection

I'm searching for keylogger detection. As far as I see, almost all of keyloggers created by tools are sending data to a host periodically, but the ones made by coders may send data non-periodically. ...
6
votes
4answers
436 views

Does using GUIDs for IDs make IDs unpredictable?

Say I have a website that stores credit card information and on that site I have a page where users can edit/delete their credit card information. For the sake of the example lets say the HTML looks ...
3
votes
1answer
191 views

Exporting data beyond a cryptographic boundary

Scenario We're working on putting a FIPS 140-2 compliant SQL database on a dedicated machine behind the internal firewall of an organization, and need the capacity to push a specific document or ...
4
votes
1answer
1k views

CodeIgniter CSRF confusion

I have been working with CodeIgniter for about 3 weeks and am very well on the way to loving this framework. However I have been looking at the core code of the framework and I was reading over the ...
14
votes
2answers
2k views

How to not reveal that you are using PHP?

I'm bulding a website but some webtools and browser plugins allows anyone to get information on which technologies the website has been built. Is there any Alternative to not reveal that we are ...
8
votes
6answers
2k views

Logging in a user after password reset via link

Lets say password reset functionality flow is the following: User submits email address used for his account. An email is sent to that email address with a link with a password reset hash. Upon ...
1
vote
1answer
147 views

Does pppd encrypt traffic?

There is pppd program that can be used to create point-to-point conections over various channels (including other network). It supports authentication and compression. But does it encrypt traffic or ...
1
vote
2answers
686 views

How is distributed computing security ensured?

I browsed some articles found on the web but none of them seems to have the answer to my question (or maybe I didn't see it). I've heard that it is possible to give one's CPU unused power to research ...
0
votes
2answers
797 views

bootp enabled by default on dhcp reduce security?

by default in Microsoft DHCP server configuration Bootp is enabled and choose both(accept DHCP request and Bootp ) i know that how this work and know about how configure two DHCP Server by Bootp ...
6
votes
3answers
434 views

How and where can I best announce an XSS vulnerability in a relatively well-known website?

I'd like advice on how and where to announce an XSS vulnerability (persistent XSS to be exact). My greatest fear is the announcement getting snowed under, thus rendering the disclosure ineffective in ...
7
votes
2answers
5k views

How to use a Yubikey NEO (or any OpenPGP card or GnuPG in general) to sign X.509 CSRs?

Since the Yubikey NEO can be used as an OpenPGP card (see here) with three 2048 bit RSA keys, I thought about creating a CA from one of its public keys. Since the private key cannot be extracted ...
-2
votes
1answer
1k views

GPG advantages / disadvantages, is it useful or secure? [closed]

I thinking about GPG, is very widely used, but is secure? Why and where we using GPG? I found an article from 2002, but is very old.
2
votes
1answer
221 views

Can Jasper files be used as shells to attack java web apps?

JasperReports is an open source Java reporting tool that can write to a variety of targets, such as: screen, a printer, into PDF, HTML, Microsoft Excel, RTF, ODT, Comma-separated values or XML ...
2
votes
4answers
16k views

Can my company access my computer via the VPN?

The job I have requires that we have computers at home, a few years ago they had everyone install a VPN on our home personal computers (the company did not provide us with these computer) how safe if ...
1
vote
4answers
468 views

Strategies to store/remember very long password?

If future proof encryption is - in theory - possible it will require long password. What are some of the strategies for storing or remembering very long - in this case rarely used - password? For ...
-1
votes
1answer
397 views

How Do Spammers Exploit Mailto Fields?

I was interested in finding out how spammers can target my Mailto link to send out spams. mailto:foo@domain.com?subject=foo Is it just a case of appending ?from=foo?to=victim1;victim2;victim3 to ...

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