1
vote
1answer
5k views

4096 Bit RSA Encryption Cracked [duplicate]

I'm new to encryption and still learning about it; I overheard someone this weekend mentioning that 4096 bit encryption was "cracked" by listening to the CPU and searched for this to confirm it ...
1
vote
1answer
1k views

Is it possible that my home ADSL router firmware was hacked?

I'm using a TP-LINK TD-8817 ADSL home router with a customized firmware from my ISP. When using the modem in router mode, I often redirected to a specific link owned by ISP. This is interesting ...
2
votes
1answer
1k views

Buffer Overflow on Raspberry PI

Is the ARM processor used on the Raspberry Pi vulnerable to standard buffer overflows? That is, if a program that has a BO vulnerability is run on a Pi, will it be vulnerable to exploit? How does ...
6
votes
2answers
4k views

UTF-7 XSS attacks in modern browsers

I've recently read about utf-7 XSS-attacks (i.e. Ned Batchelders article at http://nedbatchelder.com/blog/200704/xss_with_utf7.html) but could not get any UTF-7 attack to work in modern browsers. (I ...
2
votes
1answer
268 views

Any good tutorials / libaries for implementing TLS-SRP? [closed]

In this thread, Tom Ptacek explains what Password-Authenticated Key Exchanges are, and it got me really interested in them. If I'd like to start learning about how to build them into real world ...
4
votes
1answer
573 views

Increased HEAD traffic to my website

In the last few weeks I have been getting an increased HEAD traffic to my website of the form HEAD / HTTP/1.0" 200 0 "-" "-" This just returns the details of my web server, right? The IPs are from ...
4
votes
1answer
282 views

Safely Use sudo Without allowing Other applications root privileges on Mavericks

I have noticed recently on OS X Mavericks that running sudo will not only allow one to run it again in the same window or even the same application, but will permit any application to run shell ...
11
votes
7answers
4k views

Testing a hardware random number generator

The Raspberry Pi has a built in hardware random number generator but there doesn't appear to be any public documentation on the hardware, and even if there were it would be questionable (what company ...
12
votes
6answers
1k views

Can a website determine what OS or webbrowser a visitor is using if the useragent is blanked/changed?

Assume that a visitor to a website has changed his useragent to something like the following, but he's using linux: Mozilla/5.0 (Windows NT 6.2; rv:20.0) Gecko/20121202 Firefox/20.0 Assume that the ...
4
votes
1answer
310 views

Securing wifi with encryption

So I have been hearing that using WPS Pin is not secure at all and that there are available downloads that can brute force attack the pin until it uncovers it depending on what encryption you use. I ...
-1
votes
1answer
186 views

physical access proof smart card for disk encryption [closed]

Current full disk encryption on mobile devices rely on low entropy passwords like PIN numbers or pattern locks. Being able to use a smartcard with such mobile devices is a tempting idea. I know that ...
4
votes
1answer
63 views

Do generic custom scripts avoid detection more than common security applications?

Are scripts coded only using the default API of a high level, interpreted language for generic and meticulous gathering of network device and host software information that are already available ...
6
votes
1answer
643 views

Can the xor of two RNG outputs ever be less secure than one of them?

Suppose I'm suspicious that one or more (pseudo)-random number generators is cryptographically flawed, perhaps even deliberately backdoored. The RNGs in this case might be either PRNG algorithms, ...
0
votes
1answer
908 views

How secure is a partial 64bit hash of a SHA1 160bit hash?

So http://en.wikipedia.org/wiki/SHA-1 SHA-1 produces a 160-bit (20-byte) hash value and As of 2012, the most efficient attack against SHA-1 is considered to be the one by Marc Stevens with ...
0
votes
2answers
500 views

Is my service provider hacked and what can I do to protect myself?

I found myself looking at a stock and forex search page when I try to access Chinese Stackexchange using my FireFox browser today. This is what the page looks like: And this is the HTML of the page:...
1
vote
2answers
1k views

How can I use a proxy appliance as HTTP Proxy & Reverse Proxy at the same time?

I have a BlueCoat ProxySG 810 appliance and want to use it as both an HTTP Proxy Server for clients on the Inside interface of a PIX 525 Firewall (OS Version = 8.0(4)) and a Reverse Proxy Server for ...
1
vote
1answer
484 views

MiTM not working --rejected by router?

I have been attempting to run a MiTM on a very old XP SP3 computer. I have attempted it with 3 products, as listed below: Wireshark: Traffic from the computer did not even show up. (I did see traffic ...
4
votes
2answers
357 views

If Apache is configured to parse PHP can users see PHP source code?

If Apache is configured to parse PHP and not allow to index files, are there other ways users can see PHP source code, either with or without intention?
0
votes
4answers
1k views

Trust a non-root CA in OpenSSL

Is it possible to have OpenSSL trust a non-root CA such that a certificate signed by that non-root CA can be properly verified? I've noticed that the default behavior for OpenSSL is to only verify ...
1
vote
3answers
794 views

Cracking passwords after a pattern with John

So I am trying to find out how easy it is to crack a password using some great Linux tools. We all know about John as a password cracker and how great it is. But how about specifying a pattern. Let'...
25
votes
4answers
1k views

Can anonymizing techniques make you less anonymous?

There's a recent report in the news of a Harvard student who emailed in a bomb threat so as to postpone year-end exams. According to the report, he carefully covered his tracks using the best ...
5
votes
3answers
329 views

How bad is exposing valid user names?

Today like many other times in the past, signed for a new service and got a common error message: Your user name or password is invalid This time I am wondering how useful it is to notify "...
2
votes
2answers
662 views

Consider a “zero-knowledge” file host such as mega.co.nz. How can one prevent users to upload unencrypted content?

I am wondering how could a zero-knowledge host such as mega.co.nz prevent users to just upload files in clear, and, for example, to discredit the site by uploading a large quantity of illegal material ...
-2
votes
1answer
134 views

What is this encrypted with or where can I find examples of encryptions to compare it with? [closed]

I have a hash thingy I am trying to decode and I have done relatively little with encryption, though I would like to try to learn some more. The hash is: 1YMTpavsFq7ykllC3CCsg3e1li31re1nROxuW1wqIqpk ...
9
votes
3answers
940 views

Any eventhandlers that apply to hidden elements?

I'm trying to XSS a search field and my attack vector is getting reflected like this: <input type="text" id="txtRpHiddenKeyword" style="display: none;" value="ATTACK VECTOR HERE" /> Only ...
4
votes
1answer
3k views

ASP.NET Web API and potential XSS

I'm wondering if my ASP.NET Web API had an XSS vulnerability as my controller didn't have a method to handle the default GET call. Without the GET method being handled in the code a call to /api/...
3
votes
2answers
1k views

Is it possible to steal a non secure Cookie when the Web Server (IIS) only allows Https?

Is it possible to steal a non secure Cookie (Secure Flag is false) when the Web Server (IIS) only allows Https?
3
votes
1answer
143 views

Should an administrator be able to turn off TFA for a user

We use Google Authenticator and SMS for two factor authentication. Should we allow the administrators of the site to turn off TFA for users? Google Auth uses SMS as backup option but SMS does not ...
3
votes
1answer
512 views

Google Open ID connect and ID token

I am wondering if it is safe to send "id token", which is one of the items that are result of authenticating a user using Google Open Id Connect, to the client and use it for further authentication. ...
3
votes
4answers
2k views

For someone who has a key and ciphertext, is it possible to find out what encryption algorithm was used?

For someone who has a key and ciphertext, is it possible to find out what encryption algorithm was used?
2
votes
3answers
801 views

Does an SSL Certificate (https) guarantee security without every page being SSL secured?

I'm writing a paper for class and one of the things I'm writing about is internet security. I know that SSL certificates can be easily obtained and are supposed to encrypt data on SSL certified pages. ...
4
votes
1answer
334 views

Are all cipher suites with rc4 in them intrinsically flawed?

I've been wondering lately if RC4 is so flawed in all its forms, why is it that it is still being supported by all major browsers per default? Why does the typical chrome browser prefer ECDHE-ECDSA-...
0
votes
1answer
119 views

Which BCP/DRP sections are solely related to the software vendor?

In a software project, a software vendor is responsible to deliver a piece of software. Everything else, including the infrastructure setup, database and application server installation/configuration/...
1
vote
0answers
31 views

How is password character validation in 3D secure is implemented? [duplicate]

We have a website which stores hashed passwords in the database. During logins we hash the password entered by user and compare two hashes. This is quite standard so far. Our client which is in ...
2
votes
0answers
173 views

Verizon wireless router is pinging my web server - is this ok or bad? [closed]

So I'm working from a local cafe, doing some web development, and need to see something in my Apache's access log. And to my surprise, in the log I see, every 30 seconds or so, a request for my root ...
3
votes
1answer
2k views

How does Windows/IIS keep a certificate protected or should I never run Apache Webserver on a Windows server?

If I follow the reasoning of a colleague it seems you should never run Apache Webserver or Tomcat on a Windows server if you want to keep the https certificate safe. Let me explain before this ...
4
votes
1answer
177 views

Storing product keys on same server as shop?

Situation: An e-commerce system (specifically: PrestaShop) which is used to sell virtual products (specifically: product license keys). To accelerate order processing, a cronjob is supposed to be ...
3
votes
7answers
475 views

How does an IDS identify a computer ?

How does an IDS identify a computer on the network. I mean do IDS' actually check whether a device is actually what it claims to be ? If so what factors does it check (MAC etc) ? For e.g. if a ...
7
votes
2answers
15k views

How to achieve seamless SSO without having the user to login again (SAML 2.0 & ADFS using OpenSSO)

We need to implement seamless SSO with ADFS SAML 2.0 using OpenSSO & we plan to go with IdP initiated GET binding. The user in client network will log in to ADFS with Windows credentials once ...
5
votes
3answers
2k views

Why is Google trying to communicate with svchost.exe

First off - I usually target my questions to StackOverflow since they're programming related, and I usually login with my work account - so this will be my first post from this account, as well as my ...
10
votes
2answers
4k views

Surveillance: blocking laptop's microphone from spying on you?

It is a known fact that your laptop camera can be hacked to spy on you. While the most often mentioned remedy is very low tech yet effective, everyone seems to omit the fact that the microphone can be ...
1
vote
2answers
1k views

How does the stack cookie protect return address from being overwrite [duplicate]

/GS compiler option Micorsoft developed added an extra cookie before the return address and before returning the cookie is checked, if it is intact then return address is safe why ever would ...
0
votes
1answer
316 views

Bcrypt SHA-256 implementation [duplicate]

i need bcrypt to create encryption keys and also for authentication hashes, but entropy of delivered output from password has to be >256bit (which clearly can't be achieved by hashing 196bits with ...
2
votes
1answer
438 views

How to select the right SSL cipher suite for low powered hardware?

Scenario I have many set top boxes that feel sluggish when accessing HTTPS websites. I would like to find out which SSL cipher suites are most appropriate to use for our websites, so that the boxes ...
15
votes
2answers
955 views

RSA key recovery using sound - How does it work?

A very interesting Debian security advisory was released yesterday. Genkin, Shamir and Tromer discovered that RSA key material could be extracted by using the sound generated by the computer ...
1
vote
0answers
511 views

Bypass Nmap Scans Being Blocked [closed]

A friend has set up a VM for me to play with, I am currently stuck on a little problem: On this network he set up, there are 6 machines and a router, 5 servers (plus the router) show up on a typical ...
3
votes
1answer
7k views

Grey vs Green padlock in address bar - technical difference [duplicate]

What is a technical difference between "grey padlock" and "green padlock" in URL bar in browsers? As an example we can take: Green padlock: Bank of America Grey padlock: Google Search Both of ...
33
votes
7answers
2k views

How do I educate others about social engineering?

One of my friends used to boast about how long his passwords are. One day, I decided to play a prank and social-engineered it out of him. I was pretty surprised as to how effortless the entire ...
5
votes
1answer
1k views

Is is typical to create both x509 and OpenPGP key pairs?

I'm looking into increasing my use of signed and encrypted "things" - LibreOffice Documents, Off-the-record chat, PDFs, emails, etc. I'm finding that some things only support x509 format-certificates, ...
229
votes
20answers
44k views

How can someone go off-web, and anonymise themselves after a life online?

With data mining tools like Maltego and other correlation tools for large data sets, if we conduct any transactions online assume that these can all be collated to build a good picture of what we do, ...

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