-1
votes
3answers
279 views

2 routers, a desktop and an Android

Router 1 is setup with WPA and a 32-character PSK. A Linux desktop is connected to it via Ethernet. Router 2 has an 8-character PSK and is connected to Router 1 by Ethernet cable. Router 2 is used ...
2
votes
1answer
247 views

What is the most “safest” architecture to run in QEMU? [closed]

Currently OpenBSD supports these architectures ( http://www.openbsd.org/plat.html ): alpha Digital Alpha-based systems amd64 AMD64-based systems armish ARM-based appliances (by Thecus, IO-DATA, ...
1
vote
2answers
572 views

Why is unshadowing needed?

john /etc/shadow look like working, because john will use many-many CPU for it. But why is unshadowing needed? Why isn't it enough to use "john /etc/shadow"? Because of the salting? Can someone ...
2
votes
4answers
177 views

Protecting IP on a remote server

Apologies in advance if this question is a bit vague. I just joined a stock trading group. A guy set up a server for me, and it's racked in their building. I ssh into it, and run my algo remotely ...
8
votes
3answers
13k views

How does “traceroute over TCP” work, what are the risks, and how can it be mitigated?

There is a utility called tcptraceroute, and this enhancement called intrace that is used just like a standard traceroute, but it works over TCP. How is the syn flag in TCP used to achieve ...
3
votes
3answers
148 views

Fake Websites: How to avoid?

So, I'm sure you've heard of gatt.org being the fake website for the WTO. What I'd like to know is, when I'm on the Net, how do I discern the authenticity of the website? I was thinking something like ...
-4
votes
5answers
543 views

Why do most cars use physical keys and no PIN?

Why do car makers rely on physical start keys, which can be stolen by home burglars and then used to start the vehicle? Why don't they use more secure methods such as a personal PIN, or a pin code to ...
5
votes
5answers
617 views

Encrypted disk at risk if laptop stolen while turned on but locked

If I have a laptop with full disk encryption it's turned on, the screen is locked and it gets stolen. How would an attacker get my data? It's not encrypted at the moment because it's turned on but the ...
4
votes
1answer
213 views

Unique SSL keys for load-balanced hosts

Given a setup with multiple SSL-terminating load-balancers in a failover configuration, is it a bad idea to have a unique TLS private key for each one of the hosts? They would all share the same FQDN. ...
2
votes
4answers
258 views

Securing JSON? Is it justifiable to return html code instead of json to prevent copy cat?

In one website I had to manually enter first hand data, which is a really tiresome job. I am concerned if I return such data in json, it would be too easy to parse and incorporate into other's ...
-2
votes
1answer
125 views

Am I covered with GPL If I want to share open source code of project developed in my company? [closed]

I do not know if it's the right place to ask this question. But I find that this site is the closest site in the exchange sites to ask a such question. I m working in a company and in my job contract ...
6
votes
1answer
169 views

Are the Trends of Type II Hypervisors and Newer Applications a Security Issue?

It seems that every time I have a new 'binge' at using the likes of VirtualBox or VMWare (the Type II version), they've introduced even more high-level features, often ones that remove layers between ...
0
votes
1answer
482 views

Elgamal algorithm PHP code [closed]

I was wondering if there is a PHP implementation for Elgamal algorithm for website data security ? I found that for EC, Diffie-Hellman but could not find any about elgamal. Thanks in advance.
3
votes
3answers
279 views

How do open (no password) wireless networks deal with abuse?

Many places today such as restaurants, malls, and other public places have free and open WiFi that does not need a password or login information to access. That means that anyone, even people outside ...
5
votes
3answers
1k views

Are 500 responses or specific error codes more secure for REST services?

I am building a REST API to store security sensitive data for both my client and third-party partners. Each request is validated using an HMAC of certain data which is keyed on a temporary key ...
3
votes
2answers
168 views

Degree of Obfuscation

Let us assume that I have the following code: namespace MobileApp { public class Storage { public Storage() { } public bool Save() { bool ...
1
vote
2answers
395 views

OpenSSL dgst authentication failure

I've tried to replicate the workflow presented on this blog in OpenSSL: http://farid.hajji.name/blog/2009/07/27/public-key-cryptography-with-openssl/ However, authentication seems to fail despite ...
4
votes
2answers
2k views

I am always Hibernating my System, is there any risk for my Encrypted drive with BitLocker?

I am Always Hibernating my Laptop, for faster booting, I encrypted sensitive drive by BitLocker, what if my Laptop stolen and attacker knew that it was in hybernate mode, can he decrypt my hard?
7
votes
2answers
194 views

What security measures does Chrome have in place to sandbox different user accounts?

Google Chrome has a feature that allows different users to use Chrome on the same computer in a completely separate space. The support page is quite light on information. Is there information ...
4
votes
2answers
1k views

possible exploits through avahi daemon

It is always recommended to disable Avahi daemon, for security reasons, when not in use. So, by what ways it is possible to exploit a system which has avahi daemon service running? And how can we ...
81
votes
5answers
3k views

How can I protect myself from this kind of clipboard abuse?

Clipboard abuse from websites Many websites use JavaScript or CSS to stealthily insert or replace text in the user's clipboard whenever they copy information from the page. As far as I know this is ...
4
votes
1answer
112 views

Are there any public examples of an encrypted attribute in a Verisign-issued certificate?

This Credentica- UProve paper describes how Verisign issues (or did issue in the past) certs with encrypted attributes: "VeriSign issues certificates that contain encrypted attributes that can be ...
1
vote
1answer
661 views

Disabling built-in Wi-Fi adapter and protecting Wi-Fi's MAC address on a laptop

I have an XP laptop with Wi-Fi issues - it connects / disconnects intermittently. Anyway, I bought a USB Wi-Fi that works well. My security question are: Is there a way to completely disable the ...
2
votes
3answers
2k views

Is there an alternative to TCP/IP that encrypts end-to-end?

If there was a communication protocol that encrypts at the very low-level, this would solve the problem of wiretapping entirely and for all.
1
vote
1answer
256 views

NTRU java attack implementation

I'm researching NTRU cryptosystem and started research based on source code from sourceforge and bouncy castle(java language). Currently I'm reseacrhing attacks on NTRU, based on CVP and SVP. But I'd ...
102
votes
7answers
5k views

Is it acceptable that a skilled professional pentester deletes or modifies sensitive data in production unintentionally during a pentest?

Today I experienced a situation where a person responsible for the security of a company required a pentesting company to withdraw a clause in the contract that says that: "during the pentest there ...
2
votes
2answers
2k views

Is this a valid Windows update page

In my chrome browser if I google for Windows Update the first hit is windowsupdate.microsoft.com/‎ When I click on it I am redirected to ...
2
votes
2answers
238 views

Time based event, console application on Windows Server — security implications

I'm a software engineer, and I've written several discreet utilities that run at specific times on Windows Server 2008. Generally speaking, they are console applications, need to access SQL Server, ...
6
votes
2answers
676 views

Modern, security-conscious, PHP book?

I posted this on StackOverflow and they redirected me here. Sorry if this isn't the correct area! After creating a simple login system and trying to protect it against things like SQL injection, ...
0
votes
2answers
103 views

How much detail to publicise when a software vendor patches and issues an advisory? [closed]

I am interested to hear what the community's thoughts are on detail provided by a software vendor along with a fix and a security advisory. For example, let's say that some kind of severe ...
3
votes
2answers
349 views

How to intercept url to disallow Forced Browsing in simple Dynamic Web Project?

I found an issue related to Forced Browsing in my web-application.And I was able to verify that my static content(like text document...mainly help documents) can be accessed by simply hitting the URL ...
7
votes
2answers
8k views

Ubuntu LVM Encryption

I recently installed Kubuntu and I noticed the option for having an encrypted LVM. The behavior suggests it's full disk encryption since I need to put in a password before I can boot. This article and ...
2
votes
1answer
1k views

How to show XSS popup without using alert and script keywords?

I have come across a field that is vulnerable to XSS. It accepts and tags however keywords script,alert, msgbox, prompt are blocked. I have tried every encoded version of these keywords but its not ...
1
vote
1answer
356 views

Why do we need to differenciate between External Interactor and a Process?

In MS SDL Threat Modeling, there is an External Interactor and Process. While the meaning clearly shows a difference between them, when threat modeling, one can't really threat model an external ...
4
votes
2answers
291 views

Security of PGP for Long-Term Storage

How secure are PGP/GPG encrypted mails? I realize that it's probably fine for regular e-mail scenarios, but what about the security over longer time periods (>30 years)? Is the 4096 bit limit for ...
3
votes
1answer
1k views

To get security clearance, do I need to be national of the country?

For example, if I want to apply to a job based in UK which requires security clearance, can I only do so if I'm a British national? What if I'm from another country belonging to the EU?
4
votes
4answers
1k views

Are keys or RFID tags more secure access control solutions?

Just musing to myself, what is the preferable access control mechanism in high security environments? Locks and Keys or RFID tags? Going under the assumption that the locks/keys are not knoow to be ...
4
votes
2answers
117 views

Write & “WHERE” Clause Only?

I've had an idea kicking around in my head for a while, and am wondering if there are problems with it or it just has no value. What if a Database server (such as Postgres) had a column that could ...
1
vote
2answers
591 views

Prevent my site to be sniffed and changed by man-in-the-middle-attacks

I want to secure site which is locally used for Prepaid Services, the site has been hacked many times, for the first step, I implemented SSL and its now working fine, however, I want to be sure that ...
14
votes
5answers
2k views

Can I avoid DNS spoofing by typing the IP address?

The question is in the title. I have been reading about DNS spoofing. What if I were to save the IP addresses of websites I consider sensitive and then just enter the IP address when I am using a ...
4
votes
2answers
698 views

Would a massive blacklist of guessable passwords be useful? [duplicate]

Suggestions to make a good password all focus on creating a string that a computer (or more likely, a network of computers with multiple GPUs) can not guess. Putting a password meter for when users ...
1
vote
0answers
38 views

How would you find a complete list of a software's vulnerabilities? [duplicate]

I'm interested in the number of vulnerabilities over time, not in specific information about the vulnerabilities. I also don't expect any list to be completely authoritative. But what list could I ...
1
vote
1answer
169 views

The basics of cryptanalysis [closed]

There are a lot of books on encryption. Is there a must read intro, something like Smashing the Stack for Fun and for profit, that more or less everyone reads?
2
votes
1answer
160 views

Attack on the custom token-based sha256 security scheme

I have token made as sha256("public text" + "secret value"), or any number of such tokens with the same "secret value" but different "public text". sha256 that is used is not salted - so that ...
5
votes
2answers
7k views

Building a web app with encrypted MySQL database entries?

I have some experience in building PHP based websites with MySQL access, storing encrypted user details, but all other fields being plain text. My most recent project will require sensitive data to be ...
3
votes
1answer
1k views

Metasploit Get Shell Through NAT

Ok first of all this is legal and I have it in writing my friend and I are attacking eachother to get better and not break the law. Setup I have a VMWare image running BT5R3. It uses VMWare's NAT ...
1
vote
2answers
473 views

Least insecure way to encrypt a field in the database so that it can still be included in queries

I have a table where all columns need to be encrypted (aside from the PK). This will be achieved using AES at the application level. However there is one particular field that needs to remain ...
2
votes
2answers
78 views

Which signing strategy?

I have a device which should lock and unlock something after receiving a signed server response. So in the best case a loop would lock like this: User locks device User wants to unlock device User ...
4
votes
3answers
365 views

Is it necessary to test all input parameters of a web application when testing its security?

We know that testing input parameters for lack of validation is one part of a black box web vulnerability assessment but, is it necessary to test ALL input parameters (parameters, cookies, HTTP ...
7
votes
1answer
15k views

TLS Handshake gets torn down

I am trying to debug a TLS handshake between two SIP trunk endpoints: .75 and .82. Mutual authentication is being used. .75 sends: Client Hello Certificate, Client Key Exchange Certificate ...

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