Operating Systems
Apple Releases Multiple Security Updates
March 09, 2012 Added by:Headlines
Apple has released security updates for Apple iOS, Apple TV, and iTunes to address multiple vulnerabilities which may allow an attacker to execute arbitrary code, cause a denial-of-service condition, or bypass security restrictions...
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Out With the New, In With the Old: OS Security Revisited
March 06, 2012 Added by:Ian Tibble
Operating System Security is radically under-appreciated, and this has been the case since the big bang of security practices in the mid-90s. OS security, along with application security, is the front line in the battle against hackers, but this has not been widely realized...
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Gaining Access to a Check Point Appliance
February 07, 2012 Added by:Bill Mathews
On any Linux-based system with an unencrypted hard drive, it is possible to completely overtake a system once you have gained physical access. Often this is easily accomplished with a live CD distribution, such as Backtrack or Ubuntu and some command line tools...
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The Difficult Life of a Mac in the Mixed Environment
February 02, 2012 Added by:Bozidar Spirovski
We are not abandoning the Mac - it is a great tool and an asset in our little lab. But in the current state of things, it takes a lot of effort and compromise to fully migrate to a Mac platform, especially since a multi-environment knowledge is required...
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The Death of Antivirus Software
January 23, 2012 Added by:Danny Lieberman
Who needs an anti-virus? If I have a solid operating system like Ubuntu 11.10, IP tables, good control of the services on my notebook and practice safe email, why should I add additional layers of content security and feed the Symantec stock price?
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Popular Dedicated Linux Distributions and Tools
January 17, 2012 Added by:Bill Gerneglia
There are Linux distributions dedicated to multimedia editing, monitoring, security testing, and basic system administration. Here are some specialized open source Linux distributions that can be used by the IT admins to perform their job with some free sophisticated tools...
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Linux Mint to Take Linux Crown from Ubuntu?
January 15, 2012 Added by:Dan Dieterle
Ubuntu has received some stiff competition from Linux Mint. Distrowatch shows that Linux Mint has been the most popular Linux distribution over the last year, and it comes with the firewall graphical user interface installed...
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Why Manufacturers Should Support Jailbreaking
December 27, 2011 Added by:Electronic Frontier Foundation
When security flaw was discovered when iPhone’s web browser opened PDF files, Apple was slow to patch it. Users who didn’t want to wait for the fix had a better way to protect themselves: jailbreak their phones to install an “unauthorized” patch created by an independent developer...
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Top Ten Mistakes Made By Linux Developers
December 11, 2011 Added by:Danny Lieberman
My colleague, Dr. Joel Isaacson talks about the top ten mistakes made by Linux developers. It’s a great article and great read from one of the top embedded Linux programmers in the world...
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Ubuntu Decreases Security and Calls it a Feature
November 18, 2011 Added by:Dan Dieterle
If you look at the user list there is a new user present – “Guest Session”. There is no security on this account. Just select “Guest Session”, leave the password blank and log in. It is an opening, a small crack. And where there is a crack, there is an opportunity for exploit...
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OS X Lion Captive Portal Hijacking Attack
October 07, 2011 Added by:Tom Eston
OS X Lion's new feature poses a security risk. When an OS X laptop joins a network which contains a captive portal, a window is automatically opened to prompt the user to interact with it. This presents a major security risk if an attacker can control this functionality...
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MAC versus DAC in SELinux
September 25, 2011 Added by:Jamie Adams
This simple real-world example demonstrates how MAC rules supersede DAC settings. I encourage you to read the system documentation and experiment on lab systems. Too often system administrators become frustrated by "AVC Denial" messages and resort to disabling this enhanced security...
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Security-Enhanced Linux Support
September 22, 2011 Added by:Jamie Adams
SELinux is an enhancement to the standard kernel that provides fine-grained security MAC rules. The Targeted policy provides security for commonly used daemons such as httpd, dhcpd, mailman, named, portmap, nscd, ntpd, portmap, mysqld, postgres, squid, syslogd, winbind, and ypbind...
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Signals of PC Failure and Contingency Plans
September 21, 2011 Added by:Robert Siciliano
Has your computer refused to turn on? Or turned on, but only to display a blue screen? The worst is when you’ve been working on a document and your hard drive crashes. If this has yet to happen to you, you’re likely overdue. The following are signs your computer may be close to death...
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Getting Started with the New Red Hat 5 STIG
August 18, 2011 Added by:Jamie Adams
The generic UNIX STIG supported numerous UNIX and Linux distributions but never addressed Red Hat Enterprise Linux 5. For many years, this lack of support was a source of frustration for system administrators. I've completed my initial review and I want to share some of my findings and tips...
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What is a Kernel Level Audit Trail?
July 11, 2011 Added by:Jamie Adams
Few people understand how audit records are generated or the difference between a kernel level audit trail and an application event log. It is critical to configure auditing and logging mechanisms to capture the right data to safeguard the data to prevent it from being modified...
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