-1
votes
2answers
286 views

Is AES feasible for secure hashing files? [closed]

There was already a similar topic "Why AES is not used for secure hashing, instead of SHA-x?", but it was not about files specifically, and I, personally, am not convinced by the answers in it. "AES ...
2
votes
4answers
1k views

Tails like OS for Smartphones

In Jacob Applebaum's latest talk at the 30c3 conference, he advised all journalists to use Tails or similar OS for their laptops. Does anyone know of a similar OS or functionality for Smartphones? ...
2
votes
1answer
183 views

After the Cryptoperiod timespan, do we need to encrypt all the data again?

As per PCI-DSS we need to dispose the old keys after the timespan. After the cryptoperiod (lets say one year) time span, do I need to encrypt all (20k card holders) the data once again with the newly ...
1
vote
0answers
115 views

Need help to Webservice in Axis2 with https in java

I have written my webservice with https. but as per requirement i should provide authentication. so thought of going with https ssl. could any one help me with steps like moving http to https and ssl ...
0
votes
2answers
2k views

Is using an SSL Session ID along with a cookie based session verification more secure or not really?

I am using Django which is a web framework for Python. I love it but the session handling is cookie-based. Now over SSL I'm sure it's reasonably "secure" but I don't think there is any kind of fail ...
5
votes
1answer
1k views

Snort alert log simple question

I am analyzing Snort alert log and cannot figure what [1:1071:6] means in 10/12-12:44:28.793118 [**] [1:1071:6] WEB-MISC .htpasswd access [**] [Classification: Web Application Attack] [Priority: 1] ...
4
votes
3answers
497 views

Android and FIPS

I've recently been tasked with a research project to write a "secure messaging application" using "government approved protocols" (the government being the USA). I'm taking this to mean asymmetric ...
4
votes
1answer
647 views

HMAC needed with SSL/AccessToken in place?

Is using an HMAC in web service messages overkill if you are already using SSL and Access Tokens? I’m thinking of further ways to secure a service, and HMAC message signing is one. But it comes with ...
3
votes
2answers
291 views

Valid Characters For Magnetic stripe

We bought some Magnetic stripe cards and I'm writing a program that will get talked to by a mag card reader. What I need help with is that I can't, for the life of me, find out what characters are ...
2
votes
2answers
90 views

How do vulnerability reports work?

I'm really interested in IT security and I would like to know how vulnerability reports work. Is there a central database for those things? I often see CVE-XXX-XXX on disclosures, but I don't ...
1
vote
2answers
597 views

How can I determine the Java version running on a remote server?

Short version How can I determine the Java version a remote server is running if I only have access to the server through port 443? Long version I am validating a pentest run by another group. ...
4
votes
1answer
117 views

How do I sign another person's key and make the signature expire?

I'm using gnupg and I've just seen that people can sign keys with an expiration attached. The expiration of individual signatures can be seen in gpg --list-sigs <KEY> when setting this in your ...
31
votes
8answers
9k views

If I visit a HTTPS website when using Tor, is my IP exposed?

HTTPS is an end-to-end encrypted connection. Given this, does the website I am visiting know my original IP? The website is only available over HTTPS (not unencrypted HTTP).
2
votes
1answer
91 views

Proper way to target spammers on pages such as user registration, password recovery, etc

What is the best way to handle spam on pages like user registration or password recovery? I am not asking about whether to lockout a user for a few minutes or how to put up a captcha. I'm interested ...
2
votes
5answers
5k views

How to validate a client certificate

My understanding is that when using a client certificate for security one issues a private and public key cert (for example X509) of some sort and sends that of to the consumer of the service that one ...
0
votes
1answer
436 views

Server not requesting for certificate in SSL handshake

I have one windows service and web service trying to make a web service call over TLS. I have setup the certificates in MMC and I am able to successfully connect using the web service. However, when ...
2
votes
2answers
1k views

Identify HTTPS vs Application SSL Traffic

Scenario A: A user points his web browser to https://users.server.com. The website completes the SSL handshake and continues with the HTTP protocol inside SSL. Scenario B: (server-side) Now, let's ...
1
vote
4answers
240 views

search CA for someone's public key

do CAs offer service wherein an application can request someone's public key? i am trying to do this but i am unsure if it is correct (suggestions of better ways to do it will be most appreciated): ...
4
votes
3answers
1k views

What is the most secure way to send emails using PGP?

I am a PGP beginner, having just downloaded GPG for OS X. I created my first pub/sec key for my email address and uploaded it to the public key server. GPG has several features available, namely: 1) ...
-2
votes
1answer
306 views

Examples of images causing buffer overflows? [closed]

I remember reading a news article of an incident where a hacker was able to use an image to infect thousands (maybe millions?) of computers. Can anyone provide links to such news articles? I couldn't ...
1
vote
3answers
147 views

Can I trust profile data a 3rd party auth provider send to me?

This question may be related to this one, but I think we need to be sure. My website implement login via OpenID (or Google, or Facebook, etc.). On my website, authorization is based on user email ...
1
vote
4answers
1k views

RatticDB for passwords is not encrypted. Is this good approach?

I am looking for a password application for storing passwords, and RatticDB have a web interface and SSH access is planned, which are exactly the features I am looking for. However, they write that ...
1
vote
1answer
137 views

Sending Salts For Key Generation

I am working on a project that uses a combination of a web based framework (Django) and an installed app (Python) for the purpose of data entry/upload. I will have to send medical records over the web ...
10
votes
4answers
925 views

Forgetting passwords typed in too frequently

It has happened to me several times that I've become so used to typing in a password I can't consciously remember it and it's purely muscle memory. This is particularly true with complex passwords ...
1
vote
2answers
666 views

Can I exploit Windows kernel from user-mode application?

In this document is detailed technique of exploiting Windows kernel. But writer is talking about accessing kernel memory & doing exploit from user-mode application at the same time. Can I do this ...
1
vote
3answers
149 views

How to guarantee privacy on files that I store

I want to create an Android app where users from an office (typical use) can upload scanned documents to the app backend service for later use. e.g. A lawyer want to upload a sentence ...
2
votes
2answers
1k views

Does setting up a DMZ for a home consumer “cloud” appliance make sense?

Some of you may have seen/hard of Western Digital's MyCloud NAS solution for home networks. This comes with a proprietary app suite for mobile devices and workstations alike. This allows the consumer ...
-3
votes
1answer
194 views

Meaning of webpage link containing www23 [closed]

I have come across a number of websites which include links such as www32.example.com and also www2.example.com. Why is there a number in the www part of the link? Are these sites not legitimate? ...
0
votes
1answer
154 views

Sql Injection - Possible exploitations on a real case [duplicate]

This is a snippet of a PHP script: $useragent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : NULL; $query = "SELECT `id` FROM `browser` WHERE name = '".$useragent."' LIMIT ...
1
vote
2answers
270 views

Nested encryption for multiple users

I've developed a web application (developed in .NET MVC 4) which have multiple users with personal login credentials. The web application holds a lot of content uploaded by the users. My client would ...
1
vote
3answers
194 views

Is there a way to get information out of the router [closed]

Is there any way (directly from a computer or device) to see the packets that pass the router from the different devices. Thanks.
0
votes
2answers
64 views

Contents retrieved from a not protected url from content owner's server. Legal? [closed]

Is legal to use contents retrieved from a not protected url (no authentication involved, just a public accessible URL) from the content owner's server? Is legal to distribute urls pointing to that ...
0
votes
2answers
777 views

What information can be gained from an Email Header?

What information is present in an Email Header that can be used to track a sent mail? For example, are some of these present? Web Browser used? Operating system Type of Network (broadband/dial up)? ...
0
votes
1answer
695 views

Intercepting HTTP requests from a Java Application [duplicate]

I was wondering if anyone knew of a way of capturing and modifying the requests sent out by a Java application over HTTP. I can see them in Wireshark, but I also want to be able to modify them in ...
-1
votes
1answer
3k views

Hydra bruteforce is giving wrong passwords. Can't seem to work any help? [closed]

Ok so what im actually trying to do is to bruteforce my own account on some website just to check myself . This is NOT for illegal steps or use , im trying to crack my OWN password , and im trying to ...
2
votes
2answers
189 views

What options are available for implementing DLP? [closed]

What options are available for implementing DLP within an organisation and what are the pros and cons of each?
-1
votes
2answers
432 views

Packet size and flood attacks

Do the attackers use small but a lot packets or big and some? e.g. 2 bytes or 512bytes? Also , can packet size affect the size/speed of the attack? Something more , how do the firewalls block dos ...
2
votes
2answers
562 views

What are good approaches to modify TLS/SSL trafic in order to make a HTTP bot?

If I wanted to make a bot that plays/issues automatic actions/moves in a online browser game, whose communication is realized over HTTP1/1 and WebSocket (https and wws respectively), all TLS ...
-1
votes
2answers
44 views

What kind of dictionaries can be created from a normal dictionary? [closed]

We have many text files with ~all the words from a given language. Does someone know a "full" list of methods a word/dictionary can be remaked? ex.: testword can be converted using leetspeak ...
2
votes
2answers
954 views

What is the ultimate goal of hacking a webserver? [closed]

Recently I noticed a lot of traffic generated by automated bots that were checking for vulnerabilities in my web server. They were mainly looking for ways to hack into plesk/wordpress which I don't ...
0
votes
1answer
304 views

Prevention of netcutter use in the College LAN

I am a student,residing in a hostel,accessing internet,using College LAN,which is protected by Cyberoam Corporate Client authentication,and the bandwidth is equally distributed to all students but a ...
1
vote
4answers
196 views

How to store passphrase in this situation?

How to store a passphrase with a Java application that periodically needs access to its plaintext form? It is a strange situation, but I am wedged in it. If providing a decent security mechanism is ...
4
votes
2answers
836 views

Builder vs. Breaker - Do developers make good pen testers & vice versa

Do developers necessarily make good penetration testers & vice versa? The reason I ask is that I find I have much more of a knack for figuring out how an existing piece of software works and can ...
3
votes
2answers
716 views

Help investigating potential website attack (URL rewriting and ROT-13 obfuscation) [closed]

We're looking for help/advice from website security experts. Our company develops web-based process management software and hosts it for our customers. The software sends emails to users when they ...
1
vote
1answer
612 views

how to pass credentials across applications securely?

To simplify the user experience , if we want to design a system such that the user login password for the desktop account itself can be shared with various applications like chat/email/skype etc. ...
1
vote
3answers
261 views

Hash algorithm without ASIC's

I want to design a new crypto-currency, with an algorithm which is different from SHA-256 or Scrypt. But in order to do this, I need to know the hash algorithm which is the hardest to make ...
-1
votes
1answer
245 views

Main factors that influence information security effectiveness? [closed]

What are the main factors that influence information security effectiveness (besides top management support, employee training and use of security policies)?
2
votes
1answer
875 views

How does Ram Scraper work?

I heard that during Christmas a lot of customer data was stolen using malware attack called Ram Scrapers. What exactly is a Ram Scraper?How would one infect a machine with it?What information can you ...
-3
votes
1answer
146 views

RSA encryption confidentiality [closed]

In this scheme , is confidentiality guaranteed? A sends to B an encrypted file which is encrypted by B's public key. Can you illustrate any variant, still RSA- based but also using symmetric ...
1
vote
3answers
807 views

How do I restrict network access to LAN for visitors

How do I restrict network access to LAN for visitors? In my organization's premises any outside visitor can come and connect to the LAN ports in our meeting rooms. We have seen that they are able to ...

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