security

Rootkit Hunter: Scan For Rootkits In Linux

A rootkit is a software system that consists of one or more programs designed to obscure the fact that a system has been compromised. An attacker may use a rootkit to replace vital system executables, which may then be used to hide processes and files the attacker has installed, along with the presence of the rootkit.

Restrict (Lock) Your Ubuntu Desktop With Lockdown Editor

Gnome system restrictions utility Lockdown Editor lets you create a profile that limits a user to a set of application that a system administrator allows. It has a nice, logically structured GUI that allows administrators to choose and click checkboxes on the options that you want to deny for user access.

New security hole in VLC video player

A new critical security hole has been found in the VLC player from the VideoLan project, while there is still no public fix for the previous security hole found two weeks ago.

Ubuntu security notice - kernel vulnerabilities found in all supported releases

There’s an important security notice from the Ubuntu folks.  A kernel vulnerability was found.  It’s pretty much only vulnerable to local attacks but it’s always a good idea to update your boxes to the latest versions of the kernel (as noted in the below announcement) so that you reduce your vulnerability to threats.

Security Features of Firefox 3.0

Lets take a look at the security features of the newly released Firefox 3.0. Since it's release on Tuesday I have been testing it out to see how the new security enhancements work and help in increase user browsing security. One of the exciting improvements for me was how Firefox handles SSL secured web sites while browsing the Internet. There are also many other security features that this article will look at. For example, improved plugin and addon security.

Tips for maintaining a secure Ubuntu system

There are a few basic steps to maintaining a secure Ubuntu system:

Practical Linux home security

Most all modern home computer users are switched on to the fact they have to protect their computer from nasties: anti-virus, anti-spam, firewalls have all entered the common vernacular. If you don’t use 'that' operating system from Redmond though does this still apply? And what packages should you use?

Virus Protection With avast! Linux Home Edition On Ubuntu Gutsy Gibbon

This tutorial shows how you can install and use avast! Linux Home Edition on an Ubuntu Gutsy Gibbon desktop. Although there aren't many Linux viruses out there, this can be useful if you often exchange files with Windows users - it can help you to not pass on any Windows viruses (that don't do any harm to Linux systems) to Windows users. avast! Linux Home Edition is free for private and non-commercial use.

Linux Anti-Virus Programs Explained

From Techthrob.com:

There has been a lot of debate recently over whether or not it's a good idea to run an anti-virus program if you're using Linux. Reading the forums, I see a lot of misunderstandings, particularly around what exactly it is that these anti-virus programs do and whether or not they're necessary. I hope to clear up some of the confusion regarding the anti-virus situation on Linux.

Mozilla raises Firefox security bar

Firefox 3.0's new anti-malware blocker, a tool that prevents some malicious pages from loading, is the browser upgrade's most important new security feature, Mozilla Corp.'s head of engineering said today.

Howto: Delete Files Permanently and Securely in Linux

From Techthrob.com:

We all know that when you simply delete a file, it's possible to recover it later. Sometimes this is useful, if you accidentally delete something important; but usually this is a problem, and you really want that file gone forever. This howto explains how to delete a file in linux securely and permanently, so it can never be recovered.

Read More at Techthrob.com

Securing Linux laptops

Laptop and notebooks are being stolen at an ever-increasing rate. In 2004, Safeware Insurance which sells computer insurance, estimated 600,000 laptop and notebooks a year were being stolen. In 2006 an estimated 750,000 were being swiped, according to Absolute Software a company that makes computer tracking products -- and does not support Linux.

Lynis - Security and system auditing tool

Lynis is an auditing tool which tests and gathers information from Unix based systems. The audience for this tool are security and system auditors, network specialists and system maintainers.

Firefox 3 security looks promising, testers say

Mozilla promises big security strides in the upcoming release of Firefox 3, including access to a Google's database of malware-laced Web sites and a warning system that will alert users who are about to visit them. IT security professionals who have experimented with the latest beta say tweaks are needed but that the overall changes look promising.

How to: simple security with Easy Crypt

Add some secret ninja power to your Ubuntu system today with Easy Crypt. With only a right click you can open or close a ‘top secret’ file, protected by military grade encryption (AES 512-bit Whirlpool). Easy Crypt is a cute little menu which brings the power of TrueCrypt to your system tray. No terminal commands necessary.

Ten Firefox extensions to keep your browsing private and secure

Most people lock their doors and windows, use a paper shredder to protect themselves from identity theft, and install antivirus software on their computers. Yet they routinely surf the Internet without giving a second thought to whether their browser is secure and their personal information safe. Unfortunately, it's easy for someone with nefarious intentions to use a Web site to glean data from -- or introduce spyware to -- your computer. Even worse, sometimes all you have to do is randomly click on a site to have your data probed in a most unwelcome way.

Power-ups for Firefox: Add-ons bring added security and comfort

One big helper for surfing comfort and speed is provided through an add-on called Adblock Plus. As the name suggests, it eliminates ad banners. During installation, the user can subscribe to filter lists that are then automatically updated to recognize and block new domain addresses used to transport ads. The add-on also appends a "Block" tab onto Java and Flash animations and surfaces. One click and that particular object will never appear again.

OSX Tiger vs. Vista vs. Ubuntu Security: a 15 Point Report Card

When shopping for a new computer, your mind is probably spinning with considerations: price, reliability, speed, software capabilities, security, and other specs. Perhaps the hardest part is choosing an operating system on which everything will run. To get a good idea of what capabilities Apple’s OSX Tiger/Leopard, Windows Vista, and Ubuntu Linux have to offer, check out our 15 point report card that compares the levels of protection you’ll get with each of them.

Ubuntu, security & freedom. Can they still live together?

There is a long and somewhat heated argument taking place in the Ubuntu forums over a post by Ian Jackson in the Ubuntu Developers mail list, which is a wrapup of a discussion held on the irc #ubuntu-devel channel. The post advocates a change in the Ubuntu security policy by making it more difficult for new users to install untrusted 3rd party software.

Test Your Port Security

Have fun with your Ubuntu System and have the folks at GRC.com run the Shields Up port scan tests aginst your IP address and feel really good about yourself for running Linux.

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