All Questions

1
vote
2answers
674 views

What is it common to only say “username or password is incorrect” in case of login errors? [duplicate]

When logging in to a site with wrong user/password credentials, the displayed error is most generally a generic "username or password is incorrect". Looking into some PHP code that handles such login ...
2
votes
1answer
1k views

Android access tokens and access to all google services

My questions is based on the asnwer on that question: Can the Gmail password be recovered from the Android Gmail app? So, as I understand when we setup google account on Android devices, it stores ...
6
votes
3answers
334 views

Phone Privacy for Small Business

I'm a small business operator and I'm looking for ways to provide security and reasonable privacy for my own business communications and communications of customers. All these businesses operate ...
0
votes
1answer
534 views

Exploit Compilation Problem [closed]

I am trying to compile the following exploit: http://www.exploit-db.com/exploits/10613/ But get the following error: local.c:12:22: fatal error: asm/page.h: No such file or directory compilation ...
4
votes
1answer
723 views

SMTP injection, how it is done and what can it cause?

There are a few things that I dont understand about the injection. The injection is something along this line > . MAIL FROM: mail1@gmail.com RCPT TO: mail@gmail.com DATA EMAIL data . Here are ...
-2
votes
1answer
591 views

Is it possible to encrypt WiFi connection?

Is it possible to encrypt (encrypt traffic) WiFi connection from my laptop to my router? If anyone of you did it? How I can do this?
17
votes
5answers
2k views

Security of an initial redirection from http://example.com to https://example.com

Suppose that http://example.com/<foo> systematically redirects to https://example.com/<foo>. I enter http://example.com in my browser's URL bar, and I see a page load and the URL bar now ...
13
votes
6answers
2k views

How secure is redirecting user from http://normal.bank.com to https://secure.bank.com?

I have an application. Which works on http, http://normal.bank.com. But for log-in, performing any action, etc. I am rediecting user to https://secure.bank.com, where user can login and perform ...
0
votes
2answers
376 views

Transmitting malicious code over audio speakers

In a post that reads like science-fiction, a security researcher claims that malicious code was being passed between computers. A few quotes: ... "badBIOS," as Ruiu dubbed the malware, has the ...
1
vote
1answer
1k views

WPA 4 way handshake and authentication

I'm studying how WPA-TKIP works. As I understand, there are two parts to authentication. Using EAP messages the client authenticates itself to the access point or authorization/RADIUS server. I ...
0
votes
1answer
107 views

Which URL is revealed when using wildcard SSL?

Assume there are two servers; server1.com has a standard SSL certificate installed and server2.com has a wildcard SSL certificate (*.server2.com) installed. Next, assume you make from server 1 via ...
0
votes
2answers
67 views

Is there a way to safely exchange two different informations like a sliding door?

In real life it would be like putting two items at the opposite sides of a sliding door, you turn it and they can be exchanged safely. Not only that, if the door is made out of glass, you can pretty ...
22
votes
3answers
3k views

What does the email header-line “message opened by mailclient” mean?

Today a Belgian MP claimed (backed up by a security expert) that her email headers show that her email was read during routing (text in Dutch). The published screenshot of the headers highlights the ...
1
vote
6answers
231 views

Does including the username in a password make it less secure?

Many registration forms prevent you from choosing a password that includes your username. Is it a reasonable restriction from security standpoint? I can see that if your username is "foobar" and ...
9
votes
3answers
3k views

Is HTTPS and Basic Authentication secure enough for banking webservices (RESTful)?

I have been reading about SSL/TLS for the last few days and looks like it has never been practically cracked. Given SSL/TLS is used for all communications between client application and the server, ...
2
votes
4answers
802 views

How can I block bots that consistently hit the same URLs?

I am getting slammed hard by bots, and I am not sure how to stop them without blocking my legitimate traffic. I created some iptables rules that say, if X connections in X seconds, block, but that ...
7
votes
2answers
2k views

How can someone sinkhole domains?

The Wikipedia article about CryptoLocker says: In late-October 2013, security vendor Kaspersky Labs reported that with the help of a researcher, it had created a DNS sinkhole to block some of the ...
3
votes
4answers
466 views

How to tell if a site is securely storing passwords? [closed]

A site I frequent has a policy to make you change your password every 90 days. That's a cool policy, but I stumbled upon an old xkcd and facepalmed myself, because lots of doxing happens on this site. ...
4
votes
2answers
462 views

Smashing the stack if it grows upwards

As we know that on most of the processor architectures, the stack grows downwards. Hence, memory exploits involving smashing of stack and buffer overflow and their explanation make sense. Just ...
3
votes
2answers
2k views

When do you use OpenID vs. OpenID Connect

Can they be used together? ....or are they two separate protocols that may or may not be useful depending on the context? The reason I ask is because I'm trying to implement the following: User ...
1
vote
1answer
1k views

Uploading JSP (Any kind of java code) to Tomcat without manager

I'm new to this site. I have a question concerning the upload of dynamic java code into an application running on Tomcat 7.0.34. I'm doing a penetration testing of a java website and found it's ...
-1
votes
4answers
197 views

Changing private keys [closed]

My question is a bit of weird one and doesn't apply to me so much as I'm just curious. My question is: If a large company (say, Google, Facebook, or a bank) were to have its private key stolen, how ...
3
votes
1answer
298 views

Symmetric encryption with different encryption and decryption keys

In the book, Applied Cryptography by Bruce Scheier, in the foundations chapter he defines symmetric encryption algorithms as algorithms where the encryption key can be calculated from the ...
4
votes
1answer
499 views

PFS on nginx: only RC4 gets used (TLS_ECDHE_RSA_WITH_RC4_128_SHA)

I'm trying to configure my webserver for perfect forward secrecy. I'm using ssl_ciphers ...
4
votes
4answers
1k views

Security provided through MAC filtering: Wired vs. Wireless Networks

My question refers to the following article on Wikipedia: MAC Filtering. The article states: MAC filtering is not effective control in wireless network as attackers can eavesdrop on wireless ...
1
vote
1answer
228 views

Detecting SMIME type using OpenSSL CMS

Is it possible to detect S/MIME content types (enveloped or signed) using OpenSSL CMS API? I would prefer to avoid pre-parsing S/MIME headers and let OpenSSL to detect whether message is signed or ...
1
vote
1answer
457 views

How does nmap determine if it's running HTTP service on a port? Fails here

I'm running apache on 192.168.56.178, which listens on port 80, 8090 and 8095 (configured as <VirtualHost *>). Now If I open my browser and point to any of those 3 ports, e.g ...
3
votes
1answer
118 views

Who watches the watchmen? User empowerment over firewall behaviour on a personal computer

I've been exploring the gamut of free Windows firewall applications recently and have encountered the following problem: The better firewalls are excellent at stopping other apps from phoning home ...
2
votes
1answer
1k views

Is Vimium (Chrome extension) really safe?

I really like the Chrome extension Vimium. It significantly speeds up surfing for power users. However, when you install it, Chrome warns you because this extension injects JS code on every page you ...
7
votes
2answers
219 views

What output can a program, when executed from a command line, output to generate behavior that is a vulnerability on the terminal emulator?

Reading this post, titled "Fixing Unix/Linux/POSIX filenames", I came across a VERY interesting phrase by the author, which says: Oh, and don’t display filenames. Filenames could contain control ...
5
votes
2answers
338 views

Using FileVault on a Mac with existing data

I have recently got a Mac which I have started using already without any encryption while looking for the best solution. I have come to the conclusion that using Mac's own file encryption technology ...
1
vote
1answer
38 views

Is disaster recovery a requirement for any and every application that uses any ePHI?

HIPAA requirements seem to state that a disaster recovery plan is a required implementation, defined within the HIPAA Contingency Plan standard in the Administrative Safeguards section of the HIPAA ...
18
votes
2answers
1k views

Malware that can survive BIOS re-flashing

The well-respected security consultant Dragos Ruiu is reporting that he has been infected with mysterious malware that can survive re-installation of the OS and re-flashing of the OS. In other words, ...
4
votes
3answers
565 views

Is there a hash algorithm that can identify similar files or strings?

Is there a hash algorithm that will help you identify similar files or strings? For example, the hash for ABC and XBC would be similar rather than radically different as is usually the case. I know of ...
0
votes
1answer
64 views

How reliable is virtual hosting?

Web servers such as Apache and nginx support virtual hosting. To the users of websites on a shared server, they will not know that another websites exists on the same server. I have been wondering for ...
-4
votes
2answers
327 views

Defend against HTTP fingerprinting [closed]

I'm looking for ways to defend against common fingerprinting techniques used by hackers to identify what kind of setup my website is running on. I understand this is a complicated topic, and every ...
4
votes
3answers
359 views

Fully encrypted social network theory

I have this idea about building a social network that stores all its data encrypted. The idea is that a member's data is stored on multiple 'base servers' (of the member's choice). Each member has 3 ...
5
votes
3answers
233 views

Can I limit PHP include() to specific directory trees?

I know I can use the php.ini open_basedir directive to limit the directory trees where files can be opened by PHP. But in a directory structure such as this: ├── application │   ├── index.php │   ...
7
votes
3answers
12k views

How secure is WD MyPassport lock

I have a WD My Passport hard drive. There is an option that allows you to lock your hard drive with a password. How secure is this lock? They don't give details about the encryption algorith or the ...
2
votes
1answer
385 views

Why is compression done between hash function and encryption in pgp?

What are services of pgp? How is compression performed between hash function and encryption? How it can be applied in reality?
0
votes
1answer
263 views

How do I determine S/MIME encryption used?

From what I understand it seems that S/MIME uses PKCS #7 which can handle various different types of encryption. How is the choice of encryption method made by the e-mail client and how do I know what ...
1
vote
2answers
227 views

API - Security design issues

I'm building a GUI Desktop application that will communicate with an API(http) in a webserver. In the client side I have a GUI Desktop application and a GSM Modem(hardware). The GUI Desktop ...
0
votes
2answers
1k views

Is it possible to intercept https traffic and see the links?

If a site uses https and transfers the customers credit card and ID in the url. Will an attacker be able to intercept those through a MITM attack? And through Sniffing.? Can the packets be sniffed ...
9
votes
3answers
342 views

Finding out what headers are visible

I would like to find an easy way to find out what headers are visible on my websites. For example PHP version, server etc. I've looked around and can't seem to find a good explanation on the subject ...
1
vote
2answers
441 views

Best practices when classifying log messages severity in an SIEM

When deploying an SIEM solution, what is the best practice when classifying the severity of each event that is being sent from individual devices? I understand that this may be a little bit ...
7
votes
2answers
400 views

Is there a way to notify me when my Android phone connects to an unencrypted GSM network?

As far as I know when a phone connects to a GSM (2G or 3G) network, the connection is encrypted. When I get in range of let's say an IMSI Catcher, I imagine this connection will not be encrypted in ...
2
votes
2answers
1k views

Is $_REQUEST['id'] vulnerable to sql injection

I have the code below in my newsview.php.I want to know why the code below vulnerable to sql injection.I already test the sql injection in the code below. $id = intval($_REQUEST['id']); $result = ...
1
vote
2answers
6k views

Uploading Shell Using SQLI

I found an SQL injection vulnerability in a Wordpress installation inside one of my lab machines and I am trying to leverage it to upload a shell. I can get the admin hash but it seems that it is ...
1
vote
2answers
856 views

What's the limit on the size of the data that public-key cryptos can handle?

Someone mentioned here that asymmetric encryption might not be appropriate for bulk data and gave an example of RSA with 100 bytes. Of course, I understand that it was a rough example. But it made me ...
0
votes
4answers
231 views

How to secure my captcha application?

Hello information security stack exchange! I made a captcha application in PHP. It's certainly not a great idea to do so, but I was bored and I wanted to learn about Bézier curves and Bresenham line ...

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