Showing posts with label virus. Show all posts
Showing posts with label virus. Show all posts

Tuesday, October 18, 2011

Broken Windows? Ubuntu Linux Saves the Day

Ubuntu Live CD Desktop
Article first published as Broken Windows? Ubuntu Linux Saves the Day on Technorati.

You may have heard about Linux. Perhaps you imagined it as a clunky DOS-like command line system, used by uber-geeks in dark basements and server rooms to perform their geeky techno-magic.

In truth, Linux has matured into an easy to use operating system, complete with a vast eco-system of free software that rivals Windows and Mac in simplicity and beauty. It rarely needs a reboot and viruses are virtually unknown.

Canonical has just released Ubuntu 11.10, it's latest version of the popular Ubuntu Linux distribution. It calls itself 'Linux for Human Beings' and it aims to be one of the most newbie friendly Linuxes. It's innovative 'Unity' GUI (graphical user interface) is designed for simplicity and functionality.

Ubuntu is not shareware or spyware. It is a full-featured system which is provided free of charge through 'Open Source' licensing.

Open Source is a philosophy as much as a license. It gives developers the right to use and build upon the progress of previous developers. Unlike proprietary software, the source code is provided for review, modification and distribution.

This type of collaborative development leads to rapid progress and innovation. Linux runs everything from desktop systems and smart phones to toasters and super-computers.

You don't have to install Ubuntu to try it out on your computer. Many Linux distributions are offered as 'Live CDs/DVDs which run completely off your CD/DVD player. They come with a full library of software pre-installed for everything from a MS Office compatible Office suite to photo editing and email.
 
Linux Mint is based on Ubuntu, but includes popular software, like Flash, Java and proprietary video drivers by default.

Simply download and burn the .iso (disk image) to a CD/DVD. Drop it in your computers' CD/DVD drive and reboot. Most everything works 'out of the box.' Video, sound, wifi, printers and networking. You can explore Linux and enjoy all the free software without risk. Simply eject the disk when your done and the computer reboots as before.

These live CDs are a great tool for malware infected Windows computers. In a pinch, they can provide you with a fully functional and secure system, loaded with the latest software and hardware drivers. Use them to back up files from a dying hard drive or fix a borked master boot record. At least you will have a working system until you can get Windows fixed (again).

Use a Live Linux CD to clean an infected Windows system yourself. Boot using a live CD and simply visit a reputable online virus scanner like TrendMicro, Bitdefender, Kaperskey, or use a free malware detection tool kit like the Kaspersky Rescue Disc.

If you choose to keep Linux on your computer, most Live CDs will walk you through installation, either completely replacing Windows or along side it (called dual-booting).

So head on over and download one of these great free systems. Explore thousands of free software titles from games to utilities.  Keep the live CD handy to rescue malware crippled Windows computers or retrieve data from an unbootable hard drive.

You don't have to be a geek to enjoy the freedom that Linux systems offer. They are simple to use, virtually virus free and solid as a rock.

And while you're at it, take a moment to remember Dennis Ritchie, a father of C and Unix, upon which most modern computing is based. He passed away last week, but these fundamental contributions will live on. RIP and thank you from all of us.

Thursday, October 6, 2011

How Do Viruses Sneak Into Your Computer?

 Article first published as How Do Viruses Sneak Into Your Computer? on Technorati.

contreraspcrepair.com - CC
When was the last time you updated Java, Adobe Reader, Flash or Internet Explorer? These four programs are responsible for 95% of malware infections on Windows computers.

Researchers at the Center for Strategic and International Studies  have monitored over a half million infections over the past three months, utilizing 50 different exploits distributed by 44 different servers. Most malware attempted several different exploitation techniques, searching for known bugs in unpatched software.

The results showed that the vast majority of vulnerabilities in Windows computers were in out-of-date third-party software. The worst offenders were Java, Adobe Reader, Adobe Flash and Internet Explorer.

More disturbing is a whopping 85% of infections were the result of 'drive-by' downloads. These slip into the machine by simply visiting a compromised website or viewing infected .pdf or flash files.

Unsurprisingly, Internet Explorer exploits continue to be common intrusion methods, accounting for 10% of infections, and two-thirds of other infections occurred while using IE.

But don't think your safe just because you are using Firefox, Chrome or Safari. One third of intrusions occurred while using one of these other popular browsers.
Windows XP users accounted for 41% of malware infections, with Vista not far behind at 38%. Windows 7 is better, but still accounts for 16% of exploited machines.

Using a secure browser can help, but the real vulnerabilities exist in add-on programs. Worst is unpatched Java, accounting for 37% of infections. Out-of-date Adobe Reader is not far behind at 32% and old versions of Flash are responsible for about 16%.

Fewer, but still significant numbers of users have been exploited through Quicktime (2%) and disturbingly, Windows Help & Support HCP (3%).

The most important statistic in the study was that almost all exploits (95%) were the result of running out of date versions of one of four specific  programs: Java, Adobe Reader, Adobe Flash or Internet Explorer.

So when was the last time you updated these commonly used browsers or plugins? If your not sure, here are links to their update sites:

Java
Adobe Flash
Adobe Reader
Internet Explorer

UPDATE THESE NOW!

Tuesday, October 4, 2011

Breakthrough Drug May Kill All Viruses

Article first published as Breakthrough Drug May Kill All Viruses on Technorati.

Influenza Virus - cdc.gov
Researchers at MIT have made a remarkable breakthrough. They have developed a new anti-viral drug that appears to kill every virus they have tried it against, without harming healthy cells or the patient.

They have successfully tested it against a wide range of viral ailments including the common cold, polio and Ebola.

The new drug is called DRACO (Double-stranded RNA (dsRNA) Activated Caspase Oligomerizer) and works by inducing infected cells to kill themselves before the virus can spread.

When viruses invade cells they produce long strands of dsRNA (double strand RNA) which are not normally produced in people or animals. These unusual dsRNA strands are only found in virus-infected cells.

MIT researcher Todd Rider had the novel idea to combine two drugs: One identifies and attaches itself to these distinctive dsRNA strands and the other tricks the cell to 'commit suicide' (apoptosis). This is a normally occurring bodily defense against damaged cells which prevents cancers, auto immune and inflammatory diseases. In fact the average adult body destroys more than 50 billion damaged cells each day.

This combination of therapies, identifying infected cells and inducing them to kill themselves has produced a highly effective and wide spectrum drug that should, theoretically, work against all viruses.

So far it has been effective against all fifteen different viruses they have tried it on. Testing on mice showed DRACO totally cleared the H1N1 virus, cause of the 'swine flu' outbreak in 2009.

Rapid deployment of effective anti-viral drugs, even for newly discovered viruses, can be the difference between a catastrophic pandemic, like the 1918 Spanish flu outbreak that killed 50 million worldwide and a minor outbreak, quickly  contained and extinguished.

There are a few anti-viral drugs available today. They tend to be targeted to very specific viruses and are vulnerable to resistance through rapid generic mutations, common in viruses.

Viruses have been linked to serious and chronic medical conditions such as Type 1 diabetes and atherosclerosis, a leading cause of heart attacks.

DRACO may revolutionize medical treatment for viral infections, much as antibiotics led to treatment of routine bacterial infections which were often fatal a century ago. In fact, life expectancy increased by eight years between 1944 and 1972, largely due to the availability of antibiotics.

Finally, real hope exists for the victims of viral infections, from the common cold to AIDS.

Press Announcement is here and technical details can be found here.