Security

SQL Injection Attacks by Example

SQL injection is a security vulnerability that occurs in the database layer of an application. Its source is the incorrect escaping of dynamically-generated string literals embedded in SQL statements. It is in fact an instance of a more general class of vulnerabilities that can occur whenever one programming or scripting language is embedded inside another.

Security without Firewalls discussion

You might remember that I wrote an article in late november called Beginners Guide to securing your pc. You might even remember that I suggested that there was no need for a desktop firewall at all. And you might even remember that I got some pretty bad comments about my suggestion in the comments section.

Ultra High Security Password Generator

If you´re ever in the need of a high security password the Ultra High Security Password Generator Website might be exactly what you´ve been looking for. Everytime you visit or refresh the website it will display three randomly generated passwords, one 64 random hexadecimal charakters password, one 63 random printable ASCII chars and finally a 63 random alpha-numeric characters password.

Avoid Web Filters with LogMeIn

LogMeIn is another service that gives you remote control over a computer. It uses a java applet that has to be executed be the computer that should be controlled and a website that gives you control over the computer (or more than one) with the applet. That means you don´t have to install software or use a usb stick to run programs on the other computer, you simply open a website and control the computer at home.

Secure VOIP by encrypting it with ZFone

A new public beta of Zfone has been released a few days ago for windows xp, linux and mac os x. Zfone uses a new protocol called ZRTP, which is better than the other approaches to secure VoIP. "(ZRTP) achieves security without reliance on a PKI (Public Key Infrastructure), key certification, trust models, certificate authorities, or key management complexity that bedevils the email encryption world," Zimmermann explains.

Wireless Security: Attacks and Defenses

The article wireless security attacks and defenses begins with a example how people who are new to the wireless world run their wireless devices carelessly and thus invite others (with more knowledge) to exploit this weakness. Those people run for example wireless routers at factory defaults because they don´t know better, they think the device is safe the way it´s preconfigured.

SQL Injection Walkthrough

You might already know what sql injection means, in case you did not i post the definition of wikipedia:

SQL injection is a security vulnerability that occurs in the database layer of an application. Its source is the incorrect escaping of dynamically-generated string literals embedded in SQL statements. It is in fact an instance of a more general class of vulnerabilities that can occur whenever one programming or scripting language is embedded inside another.

How to check your system for rootkits

Rootkits have been in the press lately and it´s a good idea to be on the safe side and check your system from time to time to make sure it is not infected. I´am going to introduce two freeware utilities that scan your system and reveal rootkits if they are installed and running on your system.

Introduction Series Part 4: Cookies

Many people consider themselves to be very secure when they are surfing the internet and that very well may be true. However, there are some things that are often forgotten about. The one thing is the cookie. This is not speaking about the edible version with chocolate chips, but instead the file that a good many web sites across the internet that put onto your system that tell the site that you have visited before and what you have done.

Introduction Series Part 2: Adware

Adware is another issue that seems to be plaguing the entire world these days and that means that people need to be aware that this is nothing anymore safe then the standard spyware is. There are many that will tell you that adware is nothing more than an advertising venue for online companies but that is false. Through adware these companies are actually collecting data about you so they can target your computer with advertising that will come up in parts as pop up windows or the computer can actually be hijacked and then all of your search options are then transported through the adware so the results that they want to bring to you can be filtered.

How to scan your Linux-Distro for Root Kits

Ghacks is running on a linux rootserver. It should be fairly secure but there is always a chance that someone might get access to it and comprimise the system. One of the biggest threats is the installation of a root kit which will be used to access the system at a later time and clean tracks of logins that might have occured.

Microsoft expands anti-piracy program

Microsoft Windows users who are living in the U.S., U.K., Malaysia, Australia or New Zealand have to deal with Microsofts next step in their fight against piracy. A user who opted for automatic security updates will recieve the new anti-piracy tool which will install and ask for a reboot. After that reboot the license of your windows operating system is checked. You might see the following message:

Defeating Hardware Keyloggers

You probably read my article about the bank heist in London where the robbers used a hardware keylogger to recieve sensitive information that allowed them to perform wireless transfers. The bank made the decision to super glue every cable to the back of the personal computer making it impossible to add the keylooger between the keyboard and the computer

Password Security: What Users Know and What They Actually Do

The study "password security: what users know and what they actually do" was conducted by the department of psychology from the Wichita State University. The study investigated the common password generation practices of online users. All participiants took part in a survey querying (1) the types and number of different password protected accounts maintained; (2) actual practices used in generating, storing and using passwords; (3) practices believed they should use in generating and storing passwords; and (4) general demographic information.

Hardware Keylogger

This little device has apparently been used to pull of one of the greatest bank heist in history. You attach this device to the keyboard cable at the back of the pc and it´s able to record 130000 keystrokes. The bank robbers installed this device inside the bank and got access to Sumitomo Bank's wire transfer capability. With all the information at their hand they proceeded to transfer more than 400 million $ to various foreign accounts.

How secure is my bank's website?

I don´t know a single large bank that does not offer its customers a way to use a website to do their transactions. There is unfortunatly no single standard set for bank websites and many companies tend to misjudge the importance of a secure website. The Secure Web Bank website did take a look at websites from US, Canadian and European institutes and check wether those provided a SSL Login page and Two Factor Auth for their customers.

True Crypt 4.2 released

You might know that I´am using True Crypt for some months now to encrypt and decrypt my entire removable hard disk that has 300 Gb capacity. All happens in realtime and I can´t see and witness any slowdowns so far. I´am able to download content to the drive with 14.2 Mbps and its working like every other hard disk. Yesterday a new True Crypt version was released and it has some amazing new features, let us take a look at some of them:

HTML Page Crashes Windows

Ok this seems to be serious. If you open a webpage that contains a certain html code your windows will crash. The html is looking like this:

Tracing a Hacker

Tracing a Hacker is a article aimed at beginners that want to learn the basics of finding out if there is someone connected to their system who should not be connected to it. It gives a rough introduction to some basic concepts like tcp/ip, ports and how hackers find their targets. This is a good read if you don´t know what they are about. After that Omar starts of by explaining the netstat command which lists all the sources that are connected or currently connecting to your computer. If you are running p2p software this can be a lot of connections. I suggest you start of by disabling most tools that you might be running while on the internet. So, no p2p, no messengers aso.

Charon 0.6 released

This is the follow up to the proxy filtering program Calamity. It provides a fully customisable way of filtering out unwanted proxies via control files, a proxy tester to check anonymity - and a fully functional search engine crawler to find lists of posted proxies. Included within the kit is a php checker which can be uploaded to your own webspace to spread the processor load and bandwidth of the actual testing. This is fully integrated into Charon where it will simply send your pages lists of proxies and harvest the results

Microsoft Windows Malicious Software Removal Tool

250 web proxies

Lots of people are demanding more proxy sites because many have already been banned by their school or workplace. It´s not easy to find new ones but maybe the list from econsulting might help you. They have a list of 250 web proxies that might not be banned. I think it´s worth a try if you are that desperate.

Home Network Router Security Secrets

Todays world is becoming a wireless one. If you signup for a new internet provider you have most of the time the choice of a modem that uses cables and one that is wireless. Now, most people tend to chose the wireless one because their homes don´t look that messy after all, cables everywhere seems to turn certain people off quite a bit.

Setting up your own proxy server

Lot´s of people complain that webproxys are not working at their works / schools computer because they have been banned by administrators. A way around this would be to setup your very own proxy server that is being hosted a) by a free webhosting service that supports either php or cgi or b) your own website that is being hosted by a webhosting company.

IE Proxy Changer Program

I don´t think a lot of my visitors are still using the Microsoft Internet Explorer but there are some that do. My first advice would be to change the browser immediatly to firefox or opera, for those who are to lazy or have other reason to keep the insecure browser the IE Proxy Changer is a nice little addition to the internet explorer.

Password Recovery Speeds

Altiris Software Virtualization Solution 2.0

How to surf anonymously on the Internet

The question that many people ask is why would someone want to surf anonymously in the first place. Why would someone who does not do something illegal want to surf anonymously at all ? I can think of lots of reasons, here are a few:

10 Best Security Live CD Distros (Pen-Test, Forensics & Recovery)

A new Proxylist

Windows Worms Door Cleaner

Securing Your Web Browser

Dvd Rootkit on the way

Some weeks ago Sony made the attempt to protect the music from some of the cd´s they distribute by adding a rootkit software which would be installed if the user wanted to play the cd on his personal computer. The technique had its flaws and was only working on windows but it still ment that a rootkit was installed on the pc and other scripts could use this rootkit for malicious purposes. After a large outcry from the web community Sony decided to pull the cd´s from the shelves and offer a tool to uninstall the rootkit. (which you would only get through a long process)

Google copies your hard drive content

Building a better Password

Most people tend to use passwords that they can rememeber easily. If you take a deeper look many use the same password for most of their password protected activities which is a high security risk. Break one, get access to all.

11 things to do after a hack

Lets assume your system has been hacked. What steps would you undertake after the hacking attempt ? The article written at techtarget.com tries to answer the question and presents a checklist of things to do after being someone hacked into your system. Its more of a checklist for corporate networks than for individual computers but it would not hurt to take a look and probably get some new ideas that you did not think about.

Home PC Firewall Guide

How to detect and remove spyware

This guide will provide you with the means to detect and remove spyware that is installed on your system. Before we start we should define the term spyware. There are different categories of spyware, like adware and malware, that make it difficulty for the user to distinguish between them and select the right tool for their removal.

How to Secure your Wireless Network

A friend of mine moved to a new house and had to change his internet provider as well. The room with the computer and the one with the phone line were not close to each other and he decided to buy a wireless lan router and use it to connect to the internet.

We had to do a scan of the surroundings of course and found lots of unsecured wireless lan networks. I don´t know why people keep these unsecured, maybe its laziness, maybe they simply don´t know the risks involved. Its like leaving your doors open when you leave your house. Lots of things can happen..

Securing your PC with True Crypt

Only a few days ago I wrote a first small article about true crypt and recommended it. Back then I bought a usb 2.0 hard drive with 300 GB capacity and encrypted its entire partition with true crypt. This was done to test the programs functionality but also to see if it would slow down my main computer (athlon 64 3000+, 1 gb ram).

To my great suprise it did not slow down the pc and I decided to expand the encryption to cover all my hard drives. Let me tell you why and how i did this and why you should also be considering this.