-1
votes
1answer
431 views

Man in the middle attack [duplicate]

How data can be modified in a man in the middle attack? is there any video demonstrating that,any how to guide,i need practical material ,i have used cain and abel,ettercap but now i am strucked i ...
0
votes
1answer
172 views

how secure is an iPhone 4S+ with iOS 6+ in 2013?

I was searching for the current status of iPhone security: there are many discussions on the subject but a lot of them are mostly hand-waving or related to old bugs/iOS weaknesses. How secure an ...
2
votes
1answer
2k views

Why: Default salt and cipher seed value at Cake PHP Framework?

I am wondering, why in cake php framework, they include default values for this variable: salt cipher seed I found these default values while doing application review (white box approach). And I ...
1
vote
2answers
378 views

Storing Seed for TOTP

We have a public website for employees which has access to some sensitive company information. To make the login process more secure we want to implement TOTP. The setup and implementation has been ...
0
votes
2answers
713 views

E-Commerce website with REST backend : do I have to secure Backend URLs accessed by Front end public pages?

I have an e-commerce website with a REST backend and a Single page JS as front end. I intend to secure my REST backend with OAuth2. I don't want to oblige the user to authenticate when he first comes ...
10
votes
6answers
6k views

Practical and Secure use of KeePass

Currently I'm using KeePass as my sensitive data manager. I use just a main password to encrypt the database, but it is not very secure: 9 characters, lower letters and numbers mix with no meaning. ...
1
vote
1answer
92 views

Securing WebHosting Shell Access

If I provide SSH access to users who has paid webhosting service, what security measures should be applied ? What I can think of: SSH keys RSA of 4096 size (shall be secure for a while) Apache ...
1
vote
2answers
307 views

Could a user never store a password if a username/email hash was used instead?

So I was just thinking about token_authenticatable setup from devise (rails gem), and this thought occurred to me: Could we strengthen web security by hashing username/password with javascript before ...
18
votes
3answers
882 views

Any comments or advice on OWASP-2013 top 10 number A9

In this iteration of the OWASP top 10 application security vulnerabilities list (https://www.owasp.org/index.php/Category:OWASP_Top_Ten_Project), a new category 'A9 Using Components with Known ...
1
vote
1answer
271 views

Functional Specification for Common Criteria EAL 1 evaluation

I want to write a functional specification for CC EAL1 evaluation, There is an example in CC part 3 document but it is not enough complete, Are there any template or sample of a functional ...
-3
votes
2answers
926 views

How to tell what encryption is being used [closed]

How do you tell encryption algorithm used by reading its output? Here is the one I am trying to figure out Åbd$ý ...
3
votes
2answers
2k views

Using multiple keyfiles in truecrypt

I have a truecrypt container who's main password is 20+ characters long. I don't know if the keyfiles are still necessary for further improving the security. But anyway, I have folder of some .jpeg ...
3
votes
3answers
1k views

Ethics question, post-publication of 'DIY hack' that implies security hack

I've read this post at length, but I believe this question is subtly different. Consider this scenario: a municipal, non-profit organization has a website with authentication (username, password). ...
0
votes
3answers
1k views

Elaborate Hacking attempt detected - now what?

I am in the process of developing a php/mysql based web application. I took the complicated route and rather than to use a framework or anything I built the entire foundation of my app from scratch. ...
6
votes
2answers
1k views

How does dnsleaktest.com find my DNS provider

Can't see how they find this over the web. I'm on Windows, its in my network config. It changes when I use a VPN provider, but not when I use a local socks proxy connected to a remote server over ...
3
votes
3answers
977 views

Attack on Tor with stolen private keys of main nodes

What could attacker do with stolen private keys of main nodes? Tor is based on 10 main nodes: moria1, tor26, dizum, Tonga, etc. IP Addresses of this nodes hard-coded into client. ./src/or/config.c: ...
-2
votes
2answers
445 views

gmail account hacking [closed]

I keep getting messages that my sign in to my gmail account has failed. I am not trying to get into my account. I did go in and change my password this morning because of that. What do I do now? I ...
0
votes
1answer
570 views

Challenge, Authentication and session key

I programmed an application on Linux using C, I added an authentication and cryptography layer that's going like this : 1 -client sends connection request. -server send a random challenge to client. ...
5
votes
3answers
4k views

SSL VPN Detection and possible to block

Is it possible to determine the difference between a VPN on port 443 compared to standard SSL traffic? In order to access SSL websites you need port 443 open but if you setup a VPN Service on port ...
4
votes
2answers
1k views

Work on fuzzing of PDF file format

What work has been done on fuzzing of the PDF file format? I'm looking for work that focuses specifically on PDF, and is aware of the PDF file format. Has there been past work that builds ...
0
votes
1answer
826 views

Hide a machine on LAN [closed]

Is there any way to hide a computer on LAN? For example maybe with a firewall, when someone is going to ping a machine, it won't answer. In other words the machine must answer to router only. I am ...
3
votes
1answer
212 views

Offloading private key operations to a trusted device

If I have a cryptosystem built around PGP/GnuPG, I can keep my secrets safe by using an OpenPGP smart card and storing my private keys there. If I'm instead using DJB's NaCl, is there any sort of ...
1
vote
1answer
5k views

John the ripper passwd file format with salt not working

I'm trying test password strength in one of our e-commerce sites. I'm using john the ripper to brute-force a password file. The algorithm used by PHP is: $hash = md5($salt . $pass) No other ...
2
votes
4answers
525 views

Biometric non revocable major flaw

The major problem with biometric methods of identification is that they are impossible to revoke. Once my fingerprint, under whichever form, is stolen, I can't put it on a worldwide revocation list, ...
5
votes
1answer
250 views

What can be done to bridge the Air Gap, except autorun?

What can be done to bridge the Air Gap, except autorun? Is there any hardware butterflies that can attack physically isolated Unix/Linux machine in common usb drives, like VSC (Vendor Specific ...
5
votes
3answers
326 views

Special form of file system to prevent recovering after secure wipe data

I'm looking for file system with reasonably error corrections, but rugged against forensic after wipe. Say, encrypted container via loop mounted like ext4 - journal file system. This is good ...
8
votes
2answers
284 views

What's ownership concept for?

I fail to grasp the necessity of using concept of owner (ownership) and find clear explanation of its necessity. What cannot be done without concept of owner(ownership) in filesystem/database object ...
0
votes
3answers
2k views

Reaver returns different WPS PSK and AP SSID each time it finds correct PIN

I am testing a router for vulnerability, and I've noticed an interesting anomaly. It isn't the first time I noticed it, either. When entering the right PIN, Reaver will return with a different PSK and ...
4
votes
1answer
6k views

How safe is the new iOS Keychain that stores credit card numbers?

iOS7 includes iCloud Keychain which syncs your stored passwords across devices. Not only that but it also syncs credit card numbers. The only information I can find about encryption is that they are ...
1
vote
2answers
2k views

Encryption - which are/aren't NSA backdoored [closed]

I prefer bcrypt because it uses a lot of "power" to decrypt. But which encryption can i use that is most likely safe for NSA (which knows a lot of backdoors) and is relatively slow to decrypt. I ...
1
vote
1answer
387 views

PHP gethostbyname security implications

I'm working on a PHP application. There is a requirement to find IP's by hostname and i have to resort to gethostbynamel for that. Looks like there is no other way. I was wondering if there are any ...
1
vote
1answer
510 views

What is this QR code authentication scheme called?

What is this pattern for mobile authentication called? It's more convenient than entering complex password on mobile phone, and I wanted to read about it more A user is authenticated within webapp ...
0
votes
1answer
179 views

Can the random keys generated during handshake be guessed

During the handshaking of an SSL connection, the server sends its public key, the client generates a random password, encrypts it with the pk, and sends it back, then the server decrypts it and all is ...
1
vote
2answers
510 views

How to uniquely identify / tag client devices to whitelist VPN access?

I'm just wondering if there is any way to uniquely identify or tag client devices like laptops and towers in order to whitelist them for vpn access. (Note: This is a thought-experiment at the moment, ...
6
votes
2answers
3k views

How can I measure (and increase) entropy on Mac OS X?

I'd like to generate a bunch of keys for long term storage on my MacBook. What's a good way to: measure the amount of entropy and ensure it is sufficient before each key is generated, and ...
1
vote
1answer
463 views

Does RSA encryption always pad small amounts of data to some larger size?

If I encrypt 160 bits (20 bytes) of data using an RSA 1024 private key, will the result always be 128 bytes? This seems to be the case in my experiements, but I want to be sure. For example, ...
1
vote
3answers
277 views

USGCB on a non-networked computer

We will be getting some data that needs to be kept in accordance with USGCB regulations. Our intent was to keep it secure by storing and using it on a non-networked computer, but the regulations seem ...
4
votes
2answers
974 views

Is OATH TOTP and / or Google Authenticator vulnerable if an attacker has (N) previous codes?

I'm not much of a ipsec initiate, so this is a bit over my head ... but I'm always willing to learn more. Are there any known attacks against OATH TOTP (Google Authenticator's / Authy's algorithm) if ...
1
vote
1answer
482 views

Security implications of hosting third-party Javascript [duplicate]

A client of ours wants us to host a blob of Javascript for their custom-branded version of our website. It is hosted on a subdomain of our site (customer.example.com), but uses the same cookie domain ...
6
votes
2answers
5k views

How effective is the iOS “Send All Traffic to VPN” setting at deterring Wifi-based attacks?

iOS version 5 and newer has a setting for VPNs to "Send All Traffic" over that VPN. I think that sending all data to a trusted VPN target would ensure privacy of all communication sent over that WiFi ...
6
votes
1answer
234 views

How is using acces() opening a security hole?

The man page for access(2) tells : Warning: Using access() to check if a user is authorized to, for example, open a file before actually doing so using open(2) creates a security hole, because the ...
-10
votes
2answers
7k views

Remotely destroy all the data from a laptop having windows? [closed]

How can i remotely destroy all the data from a laptop having windows 7 as the OS? Is there a way to do that?
0
votes
2answers
393 views

In a SAML2 FSSO Web Browser profile (HTTP POST), should the IdP analyse the AuthnRequest before asking the user to authenticate? [closed]

Context: SAML2 Web Browser SSO profile. (HTTP POST binding). Federated SSO. If the IdP gets an <AuthnRequest> from the SP, should / must / can the IdP do the user authentication first, or ...
6
votes
2answers
3k views

Should AES always give the same output?

I'm having trouble understanding AES and would like to know if encrypting the same text with the same key two times in a row should give the same output. Is there any salt or something that would ...
0
votes
1answer
7k views

Show another number when calling mobile phone [duplicate]

Nowadays I heard that some cheaters make mobile calls to steal banking & other private information.They show private numbers like 911 to their victims. Is it possible show different number to ...
10
votes
3answers
2k views

Requirement to send username and password in distinct email messages

I have an application that sends username and a password by email (random temporary password, mandatory change on first login). A big customer has this policy of "never send username and password in ...
3
votes
1answer
151 views

How can I migrate from filter-on-output to filter-on-input?

I recently joined a company with a million+ lines-of-code PHP app. The security approach to XSS appears to be to filter output whenever the dev thought of it. Not surprisingly, they didn't catch ...
7
votes
2answers
2k views

Are RESTful sites safe against CSRF attacks?

I am having a debate with a coworker about whether our site is vulnerable to CSRF attacks. He is saying that since we are using RESTful AJAX requests for everything that CSRF is not possible. Say a ...
6
votes
2answers
3k views

Does a DDoS attack have other purposes beyond a lack of availability? [duplicate]

I'm currently researching DDoS attacks for an article I'm writing and apart from the obvious lack of availability of the target host and their services, is there anything else a DDoS can help ...
9
votes
5answers
10k views

How To Protect Tomcat 7 Against Slowloris Attack

I'm using Apache Tomcat 7 to run my webapp on Linux. I scanned it by Acunetix and it's telling me that my webapp is vulnerable to "Slow HTTP Denial of Service Attack". How can I protect it? Acunetix ...

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