3
votes
6answers
2k views

Best resources to learn web security attacks? [closed]

Can anyone suggest good resources to learn about vulnerabilities in and attacks on web sites, in a hands-on way, for someone with limited programming experience?
-1
votes
2answers
3k views

How could the hacker tamper with the 'configuration.php' file in my Joomla web server?

I have a web server hosting Joomla 1.5. I discovered that the Joomla configuration file configuration.php was modified by a hacker. How could he do so? Note that the file has 777 permission. Also, ...
1
vote
2answers
355 views

Really secure webmail

If I'm feeling paranoid about the CCDP (UK) - requiring ISPs to intercept communications across the internet - then what would be the most secure approach to a webmail system? Obviously, there's some ...
0
votes
2answers
400 views

Why was the Hail Mary Cloud named so? [closed]

The Hail Mary Cloud was a botnet that slowly and intelligently attempted to bruteforce SSH logins. Why was it dubbed the Hail Mary Cloud though?
18
votes
12answers
34k views

Public DMZ network architecture

Years ago, when I was a student, a network security professor taught me in a class what a DMZ is. The architecture he used in his slides was similar to this one: Now that I got employed, my boss, a ...
1
vote
2answers
677 views

Appropriate strategy for preventing brute forcing of logins?

I am currently building security into a website. So far, I have the following rules, and am wondering if this seems sufficient. 5 failed login attempts for a particular username will cause that ...
7
votes
3answers
2k views

Does the endianness used with an encryption algorithm affect its security?

I'm implementing the AES block cipher, which reads/writes data in 16 byte blocks. The implementation I'm working with usually read data in the little endian format. But in my platform the endianness ...
1
vote
3answers
288 views

If the encryption algorithm broken or analysed, can an attacker find my password?

If the encryption algorithm broken or analysed, can the attacker know what my password was?
5
votes
1answer
180 views

Notifying Website w/Security Hole

As a hobby, I find security holes ranging from XSS to SQLi to LFI etc in random websites I find. (I don't exploit them). I've decided to to do a little more; I want to create a volunteer group ...
0
votes
1answer
705 views

Which CTF Penetration Test? [duplicate]

Possible Duplicate: What “hacking” competitions/challenges exist? I want to test my penetration test skills.And i solved a few CTF.But it is not enough.I want to solve more ctf ...
3
votes
3answers
460 views

Possible holes in this ASP.NET security design?

So I plan on updating some data via an ASMX web service on a web server via .NET programs running elsewhere. The primary security concern is that this web service needs to spawn a process to handle ...
3
votes
1answer
3k views

Firefox Flash plugin malware?

I am running firefox 11 on ubuntu 10.04 and every time I close the program it continues to run in the background. What worries me even more is that the flash plugin is also running in the background: ...
15
votes
5answers
7k views

SQL field level encryption, how safe is it?

I am considering encrypting my database and/or encrypting only certain columns in a few tables. Is it worth the time? I mean, how much of a burden would it be on someone if they were to get a hold of ...
3
votes
2answers
568 views

How can I assess the strength of user passwords in my office environment?

I want to assure the compliance of password policy in my office. Environment Intro My environment is all windows based (server 2003/2008) user base is not more than 400 employees. Nearly 90% of all ...
2
votes
1answer
128 views

Network abnormally slow during night hours

My network recently the last week as become abnormally slow around 11 pm. Very slow buffering youtube videos during all hours. Ive recently purchased the new router about two months ago but not ...
6
votes
2answers
690 views

The safest way to access GMail on mobile devices

There are three ways to access your GMail account on iPhone or iPad devices: 1. Use safari browser 2. Use Apple's default mail app 3. Use Google's Gmail app What is the safest way to access gmail ...
1
vote
1answer
182 views

What privacy methods exist for P2P transfers?

I love my VPN, it gives me to a certain extent privacy from isp & to what I connect. I also use P2P to get & provide data, but I would like to create a level of privacy. What methods exist ...
7
votes
3answers
1k views

Hashing length for storing password

Does larger hash size improve the security? Is it overkill to use 512 bit hash? If I stored only 256 bits of the PBKDF2-SHA512 derived key, is it less, equal or more safe than 256 bits of ...
2
votes
1answer
213 views

network improvements over ipsec

I have a specific environment in which TCP is not optimal due to its general assumptions, and thus needs to be improved. This small improvement has been done successfully. It operates at various ...
6
votes
2answers
208 views

Security Researchers: How do you choose what services or software you are going to audit next?

Security Researchers: How do you choose what services or software you are going to audit next? I am referring to finding vulnerabilities and developing exploits in various applications. I am ...
6
votes
7answers
21k views

Are services like Hide My Ass and UnoDNS reasonably safe to use?

While in Germany, I want to keep using my Netflix account, watch PBS, CNBC. I have found following services: A VPN: https://hidemyass.com/vpn/promo/1/5/ A DNS: http://www.unotelly.com/unodns/ I an ...
9
votes
4answers
913 views

Is it safe to binary-deserialize user-provided data?

AppHarbor has a blog post containing sample C# code which reads data from an unsigned cookie and passes it through .Net binary serialization. Is that safe? Obviously, the data is completely ...
10
votes
2answers
3k views

Is encrypted email doctor/patient communication required by HIPAA, HITECH or Meaningful Use

I want to point out, from the start, that I know all about the Direct Project and I am huge fan of work to provide easy-to-use standards based secure email for doctor-patient communication. I am not ...
0
votes
1answer
300 views

block changing IP addresses on port 25 SMTP

A script is currently being run against my exchange server attempting to access resources on port 25 SMTP. This is generating event 4776 within Windows event logs. How can I stop this? Would I need to ...
3
votes
5answers
393 views

Laws on Programming Security Tools

I am currently working on some POST GATHER modules for the Metasploit Framework the idea is that after a shell is spawned on the target, it will gather certain files from the target such as chat logs. ...
0
votes
4answers
1k views

Does Facebook merge accounts? In what circumstances? [closed]

I have two different Facebook accounts with two different passwords and two distinct online personalities, one as myself and one as someone else. Since the last one week, to my horror, both accounts ...
2
votes
2answers
767 views

Hacking / Penetration Testing Laws

Is it illegal to post tutorials and articles on hacking related things? In particular in the UK. For example would it be illegal under this law? http://www.legislation.gov.uk/ukpga/1990/18/section/3A ...
20
votes
6answers
3k views

Why do DDoS attacks cost a fortune to stop?

I have read so many stories that a major DDoS attack is causing companies thousands of dollars to mitigate. I have two questions: Is this because they try to keep the servers accessible to real site ...
6
votes
3answers
2k views

Can ssh keyfile security be broken in a few hours if the file is exposed?

At this link there is a claim that if an RSA key has a strong passphrase security might be broken in a few hours if an attacker has the private key. Is there something weak about the security of RSA ...
2
votes
4answers
264 views

What actions should be taken by site according to Data Protection legislations?

Many countries have data protection legislation: Data Protection Directive in EU Data Protection Act 1998 in UK privacy laws in USA Web application may have registration form where fields for ...
56
votes
4answers
18k views

Are all SSL Certificates equal?

After running a few tests from Qualsys' SSL Labs tool, I saw that there were quite significant rating differences between a GoDaddy and VeriSign certificate that I have tested against. Are all SSL ...
0
votes
1answer
799 views

Tracing Proxy Easy or Hard for a Normal Website?

I know a membership website which is getting quite popular among people day by day. Now I see people are making more than one accounts by using proxies. They should allow multiple accounts from the ...
2
votes
2answers
449 views

PHP socket_connect Stack Overflow

In the desciption of the vulnerability: Stack-based buffer overflow in the socket_connect function in ext/sockets/sockets.c in PHP 5.3.3 through 5.3.6 might allow context-dependent attackers to ...
0
votes
3answers
262 views

Does “Start the following program on connection” mean what I think it means?

In the Programs tab of Windows' RDP application, there is a Start the following program on connection option. Does On Connection literally mean on connection? As in will the program I specify be ...
12
votes
4answers
4k views

Legitimately using tools like Havij

I'm a developer, not a security guru. My primary focus is ensuring that I'm not introducing security holes through bad programming. I understand how to code to protect against the OWASP Top 10, as ...
8
votes
4answers
468 views

What steps should one take to provide “reasonable” levels of privacy from a government?

I'm highly uncomfortable with the recent news surrounding government snooping in the UK. If we define a typical user to mean somebody who: Browses web sites such as BBC News and Stack Overflow Uses ...
7
votes
1answer
4k views

What is the purpose of AudienceRestriction in SAML 2.0?

Having read through the core specification for SAML 2.0 section 2.5.1.4 (page 23) I still cannot fully understand the purpose of the AudienceRestriction tag and what problem it is attempting to ...
7
votes
3answers
2k views

Nmap indicates that “telepathstart” and “telepathattack” are listening on ports 5010 and 5011 of my Linux box. What are these?

I have a linux box on my network which, according to Nmap, contains two services called telepathstart and telepathattack listening on ports 5010 and 5011. From the same box, I am receiving inbound ...
3
votes
1answer
390 views

Hybrid key management doing it wrong?

I'm currently working on a project that needs be as secure as possible key-management. My experience with encryption, decryption and key-management are none whatsoever so i did some research on the ...
3
votes
2answers
481 views

What algorithms can be used for device pairing?

I am to implement a system where android devices connect to a central server and have to register with different user accounts, so I have decided to create a pairing dance similar to what can be ...
11
votes
8answers
9k views

Whats the best way to make my internet traffic anonymous?

Recently I have thought more and more about how to make my Internet traffic anonymous. Not for illegal reasons, but just to stop leaving information about me. The methods I know of to anonymize my ...
1
vote
3answers
4k views

Why is system32/ntoskrnl.exe blocking port 80? [closed]

Today I've tried to start the Visual Studio Developer IIS as usual on Port 80, but this time it has quit with an error that port 80 is already in use. With netstat I've found out, that an application ...
6
votes
2answers
563 views

What security measures to have before openly allowing security researchers to hack your site

As some kind of a follow-up from my previous question - which was asked from the security researcher/penetration tester point of view: (Thanks to Rory McCune for pointing this out) There seem to be a ...
1
vote
1answer
988 views

How to generate self-signed certificate for S/MIME with usage 'signing' only, like DOD uses

I'm testing a feature to support S/MIME mail signing and encryption. As far as I know US DOD has quite strict standard on these certificates. So that DoD uses separate authentication, signing, and ...
5
votes
2answers
254 views

What security concerns should one bear in mind when hacking open-invitation websites?

There's a couple other questions already addressing legalities, ethics, and liabilities of hacking websites with open invitations. What are legal/ethical concerns to bear in mind, when hacking ...
1
vote
3answers
7k views

PING BLOCKING: How to do? How to break?

I can access each page of a site through the browser (firefox). I can also see the ip and port address in firebug, but when I open cmd->ping site ->it says "request timeout". I also tried traceroute. ...
1
vote
1answer
4k views

What are the risks of removing ISATAP from the default global block list?

The process of installing Microsofts pseudo VPN called Direct Access requires me to remove the ISATAP name from the default global block list by running this command: dnscmd /config ...
3
votes
4answers
5k views

What is the threat of having the clipboard enabled on Citrix and other rdp?

It is a question I have had for some time which I have never received a solid answer on. It seems most infosec teams prefer to disable clipboard functionality on Citrix and other RDP setups. What is ...
0
votes
1answer
181 views

Best practice for selective opening of ports on network gateway

Our network is currently isolated from the outside by a Linux box, running iptables and Squid to control web access. By default we deny all outgoing traffic from all IP's, to force Web traffic ...
6
votes
3answers
904 views

Have hardware trojans been seen in the wild?

Military and intelligence organizations have spent a lot of resources guarding against the possibility of hardware trojans, unauthorized modifications to hardware circuits that leak information or ...

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