-3
votes
1answer
527 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
184 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 ...
2
votes
4answers
2k 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
157 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 ...
12
votes
4answers
1k 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
872 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
163 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
2k 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
302 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
166 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 0,1;"...
1
vote
2answers
342 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
318 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.
1
vote
2answers
74 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 ...
1
vote
2answers
1k 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
1k 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
7k 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
242 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
721 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
776 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 encrypted,...
-1
votes
2answers
48 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
1k 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
448 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
239 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
1k 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 ...
5
votes
2answers
1k 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
1k 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
332 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
431 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
945 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
267 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
2k 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 ...
1
vote
2answers
417 views

Isolating guest networks

I'm setting up a secondary guest wifi on my router and I want to make sure that it's impossible for clients connected to the guest wifi to access my primary network. Initially, I used IP filtering ...
11
votes
2answers
559 views

Forward secrecy for kids

In the Scouts, it is popular to use secret codes to write messages (which are simple ciphers). I want to introduce Forward secrecy to the kids so they can use it with these ciphers. So, if the ...
1
vote
2answers
2k views

Does critical SubjectAltName IP:x.x.x.x on an SSL client certificate limit where the certificate can be used from?

I have a requirement to limit SSL certificates by source IP. Would setting a critical SubjectAltName limit this (server side validation is by OpenSSL via nginx)? If not, how could this be implemented?...
2
votes
1answer
317 views

Use of openssl could be a weak point in an Android App?

I'm reviewing an Android app (consists of Java and C source). There are complicated obfuscation steps in the build process (for content protection). But it uses statically linked openssl library ...
4
votes
2answers
3k views

Forcing IE11 to use perfect forward secrey on AWS ELB

I can connect to my server in practically every browser except for Internet Explorer and I cannot figure out why. I am resolving SSL on AWS Elastic Load Balancer (ELB), which is configured to use the ...
0
votes
1answer
386 views

IDS false positive rates

Are there any industry accepted standards for the false positive rates for a Network IDS based on Snort? Is there a way to check the false positive rates in a deployed IDS? (ideally without looking at ...
-3
votes
1answer
950 views

How can I protect files on my personal home PC for when it is connected to my employers network via VPN? [duplicate]

I think my employer uses Citrix product to supply VPN. I have files in My Documents folder on my home PC that I would not want my employer to be able to access when I am connected over their VPN. I am ...
0
votes
1answer
138 views

How much is ASLR effectiveness impacted by different ABIs?

Linux has multiple x86 ABIs: ia32, x32 and x86_64. ia32 and x32 both use 32 bit addresses for addressing and x86_64 uses 64 bit. Now, the question: Since the size of the memory space should affect ...
0
votes
2answers
417 views

How to use WinObj for detecting security issues?

The description of WinObj says: WinObj is a must-have tool if you are a system administrator concerned about security What kind of security issues can it detect and what is the rough usage?
3
votes
1answer
226 views

Can we build a key exchange protocol without certificates?

Assume that the server and the client both has some secret key K. Is it possible to have a key exchange protocol with authentication between them such that MITM attack cannot hold and if the key is ...
0
votes
1answer
364 views

Using buffer overflow on word with macro injection

I know how a buffer overflow works on a local network against an application running on a TCP port, assuming it doesn't drop the connection, but I would like some advice on an "exploit" I would like ...
8
votes
1answer
1k views

Any MITM tool for forcing weak SSL cipher suite?

Let's say I'm trying to reverse engineering communctions between an Android app and a web server uing HTTPS. At beginning, I tried to do MITM using webmitm and a fake cert. But the app failed to ...
1
vote
1answer
350 views

What is the strength of the key derivation function on Android device encryption?

What is is strength of the key derivation? Specifically, how many milliseconds or microseconds would it take a desktop computer to check a guessed password to see if it is a match? I am aware this ...
10
votes
1answer
429 views

Should Content in <noscript> Blocks Be Escaped

The title pretty much says it all. It seems counter-intuitive to escape inside a <noscript> block because any js that an attacker is able to inject there shouldn't be executed. But, I'm still ...
1
vote
2answers
383 views

Security against IP Spoofing

I am pursuing a college project, in which I am running three fake services on three ports to protect the main service (say running at port 80). The concept is that if the user is malicious, he'll try ...
1
vote
1answer
220 views

SAML2 encryption

I am new to SAML2 and have a question. We have a customer that is saying that they want to encrypt the user data they are sending to us. Here is an overview of how I have this implemented today: User ...
8
votes
3answers
4k views

Is there such a thing as a non-expiring SSL certificate?

Is there such a thing as a non-expiring SSL certificate? Our scenario is that we develop and sell embedded devices (think "internet of things"). These devices have little web servers running on them ...
3
votes
0answers
183 views

Login details security using salt and hash, and a login role in postgresql

I am coding up the security for a website in express.js and postgresql database. Now I have been reading about salting and hashing and I have the code set up with pdkdf2 using the crypto module, but ...
9
votes
4answers
2k views

Reasonable way to store encrypted passwords in a webapp's database, Linux

This question is generally similar to past questions asked here, but I haven't seen one the relates to Linux. Case at hand: a PHP web app has a MySQL backend. As part of its functionality it accesses ...

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