4
votes
1answer
2k views

How do I know if a font is malicious?

There are cases of fonts being used for exploiting vulnerabilities {for ex: ThreatPost, SecureList and F-Secure}. My question is if you ever get hands on such a font, how do you know that it is ...
-1
votes
1answer
5k views

Incorrect file permissions for LAMP [closed]

I have installed Apache 2.4.6 on my server and have the following virtual host config: <VirtualHost *:80> ServerAdmin webmaster@localhost ServerName foobar1.com DocumentRoot ...
15
votes
6answers
4k views

Do salts have to be random, or just unique and unknown?

First of all, my motive is to avoid storing the salt in the database as plain text. As far as this question is concerned, the salt is not stored in the database. After discussion in comments and in ...
1
vote
2answers
923 views

VPN and Firefox proxy

What happens if I use VPN and then configure my firefox browser to use SOCKS proxy? Am I then behind both or just proxy?
3
votes
1answer
1k views

Why is OAuth 2.0 being used for mobile devices, and not OpenID?

Microsoft Azure Mobile services exclusively uses OAuth 2.0 for authentication, and many other providers mention the use of OAuth 2.0 specifically when referring to mobile devices. Question What ...
1
vote
3answers
139 views

How does Windows know which part of memory is “intended to hold data only”?

I'm learning about DEP implementations, now I'm trying to figure out how does the OS know which part of memory is intended to hold data only?
1
vote
3answers
943 views

Text changing virus

Can malware change words that I have typed and then saved in the computer'? If so, how likely is this?
-2
votes
2answers
1k views

Why don't we have any popular decentralized chat systems, social networks etc.? [closed]

Let's say two computers have the same decentralized chat program. Each user has to have an ip address and port number to send the message to another person. Each message is encrypted using, let's say, ...
2
votes
1answer
93 views

Web App Protection and Sign On

I have a client that wants to protect access to a web app in case the employee leaves because the app gives access to clients, sales, etc. He wants to "hide" the login credentials to this app and ...
2
votes
0answers
262 views

If my users use Google OAuth for authentication, can I allow 3rd party apps to read data on my site?

Suppose I run a book club, and each of the members sign into my website using an OAuth token from Google, Twitter, Live, or LinkedIn. When the book club becomes popular, we discover that 3rd party ...
3
votes
2answers
845 views

In Visual Studio, what are the risks of simply opening an untrusted project? What are the mitigations?

I'm looking at the source code of some potentially hostile code. As usual, VS 2012 is giving me the security warning: "You should only open projects from a trustworthy source" ... "ask me for every ...
-1
votes
1answer
3k views

Is Opera spying on its users when traffic conpression is enabled?

Correct me if I misunderstand the following quoted paragraphs, but basically to compress something it must be decrypted first. This seems to be the claim of the article but I don't see this as true. ...
2
votes
2answers
683 views

Are Yubi Keys secure “out of the box” when purchased for use with Yubi Cloud?

The YubiKey personalization tool allows someone to configure a YubiKey for HOTP, challenge response, and a variety of other authentication formats. YubiKey offers a number of personalization tools ...
7
votes
2answers
2k views

Possible to use a YubiKey in HSM mode to secure a Windows CA infrastructure?

I'm looking for a low-cost Hardware Security module, and discovered that YubiKey has a HSM mode. I'm not entirely clear if this HSM mode is what I'm thinking, but I'd like to use it as the offline ...
5
votes
2answers
1k views

Why does Google SSL cert change so frequently?

For the last few months I have been using the Firefox addon Certificate Patrol to watch for changes to sites' SSL certs - so as to know if I am being MTIMed, against which SSL otherwise provides no ...
3
votes
5answers
421 views

Are hash functions “strongest link”?

It seems to me that if you were to use multiple hash functions, the "strongest link" would hold up the others. For example: HelloWorld --- md5 --> 68e109f0f40ca72a15e05cc22786f8e6 --- sha256 ...
4
votes
2answers
4k views

Storing the MAC Address of a computer in Active Directory

I’m considering enabling WoL (Wake on LAN) on the workstations on my network. In order to boot a workstation using WoL I require its MAC address. I could store the MAC address in a database, however ...
1
vote
2answers
251 views

Queues for Mobile Web Application Security Architecture?

Dear Security Mavens (of which I am not), Your thoughts & suggestions regarding an application architecture for a mobile web application (e.g., HTML5 with Sencha Touch) are invited & ...
1
vote
1answer
427 views

Selinux: How to log/monitor all accesses to a file?

Does SELinux support monitoring accesses to an object type? I would like to log all instances where sensitive files are accessed.
3
votes
2answers
697 views

Is HTTPS still secured with a known server certificate (private key)?

I see that some product are shipped with a default server certificate. I guess that a lot of these installed products still use the default server certificate in a real environment. If your server ...
5
votes
4answers
1k views

How should a webmaster manage all her passwords and keys?

I have several private keys that I use to ssh into AWS, dreamhost, github, etc. I have passphrases for all of these private keys that are too complex to remember. I have mysql passwords that my ...
0
votes
1answer
398 views

Encrypted data transfer with middle node and asymmetric key

I'm looking forward to pass data from a node A to a node B using asymmetric cryptography, but with one (huge) constraint: When A sends data to B, it is possible that B is offline. I would like to be ...
8
votes
2answers
664 views

Ideal way to store unhashed passwords

I'm dealing with a 3rd party vendor that clearly does not understand security - to access their API from my back-end I have to supply the end user's ID/user/password for the 3rd party service with ...
30
votes
5answers
3k views

How does Tor protect against an attacker just running thousands of nodes?

Does Tor have any protection against an adversary simply running a very large number of nodes? Someone with the necessary resources could just run thousands of relay nodes (including exit nodes). If ...
2
votes
1answer
3k views

Can a file .exe.part already have caused damage?

If on a Windows machine, an antivirus program has found a Win32:Rootkit in a file ...\Temp\...\xy.exe.part, could the file possibly already have caused damage or not given that it seems to be an ...
1
vote
3answers
250 views

How do I mitigate a MITM on https?

I am trying to view a https site (which worked perfectly fine till yesterday) and Chrome is showing me that the site's security certificate is not trusted. I am on a home network. How can I know if ...
39
votes
8answers
2k views

Is the Web browser status bar always trustable?

If I bring the mouse pointer to a link, but not click on it, I can see in the left/bottom corner that it displays the URL of it. Q: Could this URL (in the left/bottom) be different from the one that ...
-2
votes
1answer
137 views

What are the security measures to be taken before launching a site with credit card payments? [closed]

We just completed functionality testing of our new e-commerce site and going to launch.We are accepting credit card payments. I'm really concerned about it's security.What are the precautions to be ...
2
votes
4answers
3k views

Can anyone tell if a wireless router is plugged into an Ethernet port (without actually seeing it)

In a large network if there is an Ethernet port in the wall, is it possible to tell if a switch or wireless adapter is plugged into it? (I'm talking about the cheap home routers - with the built in ...
1
vote
3answers
2k views

What is “download-new.com”?

This strange site came up as the second result in a google search for itunes. http://download-new.com/apple-itunes/ (Although the url in the result read itunes.download-new.com.) Embarrassingly, I ...
3
votes
1answer
711 views

I recently discovered that dsniff had been installed on my computer. What do I do?

I have recently discovered that a co-worker (who has sudo privileges on my machine) has installed dsniff, and it has been there for a while. I have no idea when they ran it (if at all), the only ...
0
votes
2answers
3k views

how to know what hash function have been used

I have a hashed password and the plaintext password and i want to know the exact algorithm that's been used. I have the input and the output of the hash/encription algorithm. How would I know what ...
3
votes
2answers
1k views

Would IT Security professionel people notice a backdoor in Windows 7 or SBS 2011 implemented by Microsoft? [closed]

I guess you have heard of Edward Snowden. Papers around the world published that the NSA invests much time, money and effort for a »full take« of the communication around the world. Given this, it ...
2
votes
2answers
1k views

Is the following password-generator secure?

i use the following password-generator (python) and would like to ask if the generated passwords (usually 32 characters and more) are random enough. def pwgen(l=32): from random import Random ...
3
votes
2answers
988 views

How to store an encryption key on shared hosting?

I am designing a simple online patient management system that is running on shared hosting. According to national regulation sensitive data should be encrypted when used online, so I have encrypted ...
2
votes
3answers
796 views

Password Security and ocl-Hashcat-plus

I recently read the Ars Technical Article about new features in ocl-Hashcat-plus. In light of questions like: Long Passwords: How are they more secure? and XKCD #936: Short complex password, or ...
5
votes
1answer
1k views

How can Stripe be PCI-compliant?

According to the Stripe FAQ, they are PCI-compliant. Also, in their API documentation, one of the parameters to create a new card is the CVC (although, granted, it is optional). So, I assume they ...
1
vote
0answers
58 views

Should we allow JSPs to change on a running application server?

Should we allow JSPs to change on a running application server on a production system? My gut feeling is no. However, I can't seem to find any information to justify it. From a performance end, ...
2
votes
1answer
181 views

how much of a security threat would this be?

If I set up a Domain Controller server to be accessible from the internet via Remote Desktop Connection (through port forwarding in the router), how much of a threat would that be? and if I have a ...
2
votes
1answer
472 views

xmpp ssl cipher negotiation

Does anyone know how ssl ciphers are nogitiated via the xmpp protocol. When I capture packets, I see: <starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/> There is no hello server/client or ...
4
votes
2answers
323 views

question on hashing an aes-encrypted file

I am storing multiple sensitive data on a server that I do not own. The data is encrypted using aes-256 using cbc mode. The keys are only with me, and are stored securely. I am worried about the data ...
3
votes
1answer
5k views

Which part of the eapol packets contain WPA password Hash?

I have captured wifi traffic from a WPA network using Wireshark. I filtered the results for "eapol" packets and noted in the info column there are message type 3 and type 1. I believe this is two ...
2
votes
3answers
233 views

Do I need to be PCI compliant?

We have an internal system and I am trying to determine if the system is in scope for the purposes of PCI-DSS compliance. The system is completely internal, no public access. The system hold user ...
2
votes
1answer
212 views

Sandboxing user input html

I want to render user uploaded HTML (consisting of possibly many files with images, custom css, custom js, all uploaded in a zip file) for preview purpose. The user that submits the html will be the ...
-1
votes
3answers
207 views

There could be still buffer overflows in ex.: C?

I recently read about the $subject. Q: Why does a programming language has built-in trivial insecurity? Or.. it was just in the old times? How could this be?
1
vote
0answers
135 views

IT Security Internship [closed]

I am a student and working in the field of IT Security for 1 and a half year . I want to know about the best IT security companies for Internships and their general requirements in an intern ?
26
votes
8answers
3k views

Why is password hashing considered so important?

After reading this article, I can see the benefits of password hashing as a second layer of defence, in the event of an intruder gaining access to a password database. What I still don't understand is ...
4
votes
1answer
4k views

How do I share my S/MIME public key?

I have setup S/MIME encryption for my email address, and I'd like to allow people to download the public key from my website, rather than having to first receive an email from me. I want the public ...
2
votes
1answer
1k views

How to find the pharmacy hack in a Joomla website?

We've discovered today that our Joomla website has been hacked by a pharmacy trojan. It was difficult to discover because most users don't see it when visiting our website. One user reported about 2 ...
9
votes
2answers
777 views

How do I report a vulnerability to a large organization that doesn't believe it has a problem?

This issue is more political than technical. The organization has a lot of computers that connect via web browser to a central database. Customers are regularly left unattended with physical access ...

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