0
votes
2answers
495 views

Is there something like a “Windows Sandbox software Wrapper”? [closed]

I am facing the following problematic: I want people to send me softwares they develop, then I want to share them to other people, in sandboxed mode, that is to say with no need to have a sandbox ...
5
votes
3answers
674 views

Why would configuring a Blackberry to turn radio off when charging help with security?

A friend's work Blackberry is configured so that phone and Internet access are disabled while the device is charging. I assumed this was a fault, but apparently it's a deliberate security policy. Has ...
14
votes
4answers
6k views

OS with encrypted RAM?

Are there any applications, JIT frameworks or operating systems that focus on encrypted virtual memory, or perhaps virtual machines that do something similar? I know there are processors (albeit old, ...
5
votes
1answer
525 views

Downloading suspect files into quarantine?

Are there any tools out there or methods available to download a suspect file for analysis without having to worry about being infected?
41
votes
4answers
12k views

Why is the same origin policy so important?

I can't really fully understand what same origin domain means. I know it means that when getting a resource from another domain (say a JS file) it will run from the context of the domain that serves ...
23
votes
2answers
4k views

JavaScript written only with brackets?

I once saw JavaScript code which was only written as multiple brackets (). Does anybody remember this kind of code? There was also an online converter to convert "normal" JS into this style of code. I ...
7
votes
5answers
2k views

Fastest way to “lockdown” CentOS and have network intrusion detection, firewall, etc up and running?

Are there any proven concepts or "installers" to get up and running based on the best practices securing and locking down a CentOS installation? I'm hoping for an automated tool that would scan the ...
2
votes
2answers
292 views

PCI Scanning and authenticated user pages

I've just used a security vendor's automated PCI scanning tool to scan my web server. It only has the ability, out of the box, to scan URLs as an un-authenticated user. This means it is only ...
13
votes
3answers
1k views

What is a good enough salt for a SaltedHash?

Since I'm hashing all passwords with each their own salt, is there a benefit to the salt being really random, or would an incremental counter or a guid be good enough? Also, is there a benefit of ...
13
votes
2answers
3k views

GPG File size with multiple recipients?

If I encrypt a file for multiple users how does the file size change? Does the size of the output double for two users. How about 10 or 100 users?
3
votes
4answers
861 views

Laptop was stolen, they tried to log into my facebook from their location on my laptop

Can I get some advice on what I should do next? Laptop was stolen yesterday and they tried to log in my facebook today like 20 minutes ago.
3
votes
1answer
111 views

What are the implications of omitting the username in Secure Remote Password's verifier?

I consider implementing a Secure Remote Password (SRP-6a) verifier that omits the username from the x key hash. The intention is to allow authentication with multiple alternate user identifiers such ...
4
votes
2answers
763 views

Is there any drawback of using OAuth “pseudoauthentication” as opposed to OpenID?

I have seen posts that insist that OAuth is an orthogonally different thing from OpenID, because OpenID is about authenticating users, while OAuth is about giving access to certain services to a third ...
-2
votes
2answers
144 views

Under what circumstances can two computers receive packets at the same public IP address? [closed]

Under what circumstances could two completely different machines receive packets at the same class C IP address that is not within the IANA-reserved private IPv4 network ranges?
6
votes
7answers
1k views

Should I prevent sending of GET requests for urls that are normally operated with POST request?

There is an url that is normally operated using POST requests (i.e. POST request is sent when user submits form). But attacker can form GET request with parameters that are sent in POST request. This ...
8
votes
3answers
2k views

Am I protected from USB autorun malware on Windows 7?

As far as I know, the autorun.inf problem (the possibility of automatically executing code when a USB stick is plugged in) was solved through Windows Updates for XP, and on 7 it is no longer possible ...
4
votes
4answers
550 views

Is silverlight and Java running on the web browser capable of saving “state” into the user's local machines?

I am aware that even after we have cleared our cache and cookies, websites can still save files/information into our computer using Flash (Flash ever cookies), I was wondering does other plugins like ...
19
votes
3answers
8k views

What vulnerabilities could be caused by a wildcard SSL cert?

In a comment on this answer, AviD says: "There are numerous security issues with wildcard SSL certs." So, what are the problems? I understand that the same private key is being used in multiple ...
2
votes
1answer
742 views

My MP3 file is blocked, but still playable?

My computer is telling me that my MP3 file is blocked: I have no problems playing the song, so I was wondering what exactly does it mean for my MP3 file to be blocked?
8
votes
4answers
264 views

Staying safe, but still connected, at security conferences

If one is to spend some time away from home and work in a hotel environment where neighboring users can at least be presumed to be mischievous (if not actually malicious), what are some measures that ...
6
votes
3answers
1k views

How and when should I use OpenSSL for IT Security? How do I understand the output?

I'm discovering OpenSSL, and already used it to diagnose a faulty SMTP TLS connection, but I'd like to get a better / full understanding of the tool and how to use it. What resources should I use ...
2
votes
3answers
294 views

Remote Connection Tampering

My small high street laptop repair/service/maintenance shop has been up and running for about 3 years. It's doing quite well so I'm looking to expand into other areas of the PC market. One area I ...
8
votes
2answers
789 views

Local File Download vulnerability - What files can be downloaded to potentially compromise a windows system?

On Linux I have a good idea on what files I would like to get ahold of when you are sitting on a regular file download vulnerability. Any file on the entire OS system is accessible for download, which ...
8
votes
1answer
217 views

What practical uses are there for the AD feature of “Confidential Attributes”

Are any applications (off the shelf, or internal) leveraging Active Directory's Confidential Attributes? Would you store sensitive information here such as a private key, or a salt here? I'm ...
4
votes
1answer
52 views

Looking for a taxonomy of anonymization or re-identification properties

We are working with personally identifiable information that needs to be de-identified. Is there an existing hierarchy or taxonomy of different kinds of re-identification properties?
3
votes
1answer
125 views

Data Protection in EU for usage of personal documents

I don't know if this question fits into this forum or not. Is there some template documents that comply with the EU regulations for Data Protection and Privacy that I can reuse / (get them signed by ...
5
votes
2answers
3k views

Preventing Attacks Scanning for PHPMyAdmin etc

I have a Linux web server running Rails and each time I check the Nginx logs I find attempts to access PHPMyAdmin, database and admin directories such as this: 190.196.161.110 - - ...
15
votes
2answers
3k views

What's wrong with storing private keys in the cloud?

I know this sounds like a dumb question, but whats wrong with it? Assuming that all private data is encrypted (by the client) using PBE AES256, then is this scheme more vulerable than storing keys on ...
9
votes
3answers
3k views

How can PGP and openPGP be compatible?

PGP and openPGP use different encryption algorithms. As I understand, PGP uses IDEA to encrypt a message, then RSA to encrypt the IDEA key. If openPGP doesn't use IDEA, how can it read PGP-encrypted ...
3
votes
4answers
498 views

How do I ensure that my computer is 100% worm-free?

Ok say I have a brand new laptop that was is brand new. Is it true to say that as long as I keep the bluetooth turned off, and I am not connected to the internet, and only copy files that are 100% ...
3
votes
0answers
466 views

When to move from Container managed security to alternatives like Apache Shiro, Spring Security? [closed]

I am trying to secure my application which is built using JSF2.0. I am confused about when do people choose to go with security alternatives like Shiro, Spring Security or owasp's esapi leaving ...
26
votes
3answers
2k views

Why was the BEAST attack previously considered implausible?

Can someone explain why the BEAST attack wasn't considered plausible? I saw an article quoting the creator as saying 'It is worth noting that the vulnerability that BEAST exploits has been presented ...
32
votes
2answers
5k views

Why are hand-written signatures still so commonly used?

Why are hand-written signatures still so commonly used? Can they actually prove anything? Two assumptions: If anyone wants to forge my signature I'm sure they will be able to do it. Even my own ...
4
votes
5answers
638 views

Alternatives for DNS resolution

I was told it's a good idea not to use your ISP to resolve DNS, both for privacy issues and because it can be slow. So I wanted to change, but I've read criticism on using OpenDNS (who makes money on ...
2
votes
2answers
264 views

Too many passwords?

Is it necessary to have hard drive and bios passwords if you also have full disk encryption, or maybe at least the hard drive password is unnecessary because there would be two passwords protecting ...
8
votes
1answer
266 views

Cons of disabling live CD in bios

It has been suggested that for security reasons it's a good idea to change the boot order to prevent booting from a live CD or USB. But if you lose the passwords to unlock hard drive and bios, and you ...
4
votes
1answer
186 views

German police malware “Staatstrojaner” general question

In the case of the recent find by CCC, how exactly would the malware used by German police for internet wiretapping work? In default mode, it takes screenshots of active windows, it logs data and ...
5
votes
1answer
928 views

What on earth is this log entry in Apache?

error.log - Apache/2.2.17 (Unix) mod_ssl/2.2.17 OpenSSL/0.9.8g mod_fastcgi/2.4.6 mod_fcgid/2.3.4 [Mon Oct 10 22:35:18 2011] [error] [client 91.212.226.95] (36)File name too long: access to ...
46
votes
5answers
29k views

Does https prevent man in the middle attacks by proxy server?

There is a desktop client A connecting to website W in a https connection A --> W Somehow between A and W, there is a proxy G. A --> G --> W In this case, will G be able to get the ...
1
vote
2answers
1k views

Need example and working Security Token Service (STS)?

Can anyone explain or post any link to a simple example and introduction about the Security Token Service (STS)?
1
vote
4answers
259 views

What configuration will allow another computer in the internet to probe my computer's ports?

I've just tested my computer with Gibson's port scan test: The test results stated that my system is "uncommon". It also said that my computer deliberately chose not to return. But I did not do any ...
3
votes
1answer
374 views

What does it mean when a webpage says refresh is disabled?

https://www.grc.com/x/ne.dll?rh1dkyd2: To safeguard your privacy we have disabled the browser's "reload" or "refresh" facility while you are in sensitive areas of our web site. Reloading pages ...
3
votes
2answers
424 views

What is considered a reasonably high iteration count?

I copy-pasted a function that implements the PBKDF2 hashing algorithm in PHP. The function asks for the amount of time that I would want it to loop in order to produce a hash. Now, I'm wondering, ...
14
votes
9answers
5k views

Encrypting email for gmail

My friend who is an accountant was asking me what the best way to exchange documents with clients. He was trying to tell me that just sending via email was sufficient and I told him he was insane. I ...
6
votes
2answers
793 views

How do experienced users test stateful firewall?

How do experienced users test stateful firewall with TCP/IPv6? My test case includes: echo reply without request tcp ack without syn Are there any more test cases, especially with IPv6?
6
votes
4answers
560 views

Who sells IP reputation data sets?

I know of many companies that will sell ability to lookup IP/URI reputation. Be it DNSBL, json/*, returnpath, threatstop, surbl, ..., will let me perform lookups for a reasonable fee but, in case of ...
3
votes
1answer
888 views

It's really that insecure to have POP3 enabled in my gmail account?

Several people are claiming that you should turn off pop3 in gmail because it allowed bruteforce attacks on the password. Doesn't Google prevent this kind of attacks? What is the truth on this ...
20
votes
4answers
38k views

How to inject executable, malicious code into PDF, JPEG, MP3, etc.?

I wanted to know if its generally possible to inject executable code into files like PDFs or JPEGs etc., or must there be some kind of security hole in the application? And if so, how would one do ...
23
votes
2answers
12k views

What are the risks of self signing a certificate for SSL

Let's say I sign a SSL certificate for myself, and I'm not using a certified CA. What are the risks and/or threats of doing it?
2
votes
2answers
646 views

Using AES with a hex key/iv, what mode of operation is the “most secure”

I realize that is a loaded question, but it is not an unreasonable one. given a hex key/iv, what mode of operation is most secure from offline attacks. I defaulted to aes-128-cbc. Partly because of ...

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