Archive for the 'Uncategorized' Category

New Word zero-day vulnerability used in attacks

Saturday, December 9th, 2006

A security deficiency still left unfixed from different Word versions is exploited in computer attacks, has informed us Microsoft.

The attacks are “limited”, according to the company, which announced that is working out a patch to fix the vulnerability.

The vulnerability is similar with previous zero-day deficiencies that affected Office applications in the last few months. An attacker could change a Word file in such a way that could take control over a vulnerable system when the document is open.

An attacker could exploit the deficiency by hosting a web site with a malicious file or sending an e-mail with the file as attachment. In all of this cases, the victim must open the file to compromise his system.

Security experts say that low scale attacks are the most dangerous. Worms, viruses and trojans with large spreading don’t usually raise big problems, as they can be blocked. For companies however, trojans “with target” have developed into a nightmare scenario, as these are very hard to trace.

The most recently Office vulnerabilities affect Word 2000, Word 2002, Word 2003, Microsoft Word Viewer 2003, Word 2004 for Mac, Word 2004 v. X for Mac and Works 2004, 2005 and 2006, announced Microsoft. The company advised the users not to open Word files that come from unreliable sources.

Is your pc ready for Vista?

Saturday, December 9th, 2006

With a major release, Microsoft’s new operating system is promising a lot. But with what cost?

Microsoft has labeled computers in Vista Capable and Vista Premium Ready. According to the official website, “Vista capable” will be able to run the os, but advanced features such as the new Windows Aero user experience may require advanced hardware. Here are the requirements:

  • A modern processor (at least 800MHz).
  • 512 MB of system memory.
  • A graphics processor that is DirectX 9 capable.

Premium Ready PCs will deliver a better Vista experience, running all included features:

  • 1 GHz 32-bit (x86) or 64-bit (x64) processor.
  • 1 GB of system memory.
  • Support for DirectX 9 graphics with a WDDM driver, 128 MB of graphics memory (minimum), Pixel Shader 2.0 and 32 bits per pixel.
  • 40 GB of hard drive capacity with 15 GB free space.
  • DVD-ROM Drive.
  • Audio output capability.
  • Internet access capability.

Microsoft has done a lot of changes in the way the hardware is used, adopting the system to the new available hardware. Thus, Vista is no longer using the CPU to display bitmaps on the screen, but is now taking advantage of the Gpu to render vectors. That is because all computers nowadays come with a dedicated graphics card.

Windows XP was designed in a time when memory was expensive and processors relatively slow, but with the development of multi-core processors, Vista’s target is to perform better on these cpus. Right now, very little of Windows Xp is threaded.

Although Vista takes advantage of all the wonderful technology out there, it seems we are back to the same situation we were when Windows XP was launched: current systems run it, but future ones will run it well.

My advice is this: if your computer is more than one year old, stick to Xp until you are ready to buy new hardware. This way, you’ll enjoy your new operating system.

Reflections of a PC guru - Windows Vista with one week to go

Thursday, November 23rd, 2006

Dear readers

Welcome to my first blog post.  I would like to wish all our clients and friends, a Happy Thanksgiving in the United States.

  

With the year quickly coming to an end, I thought I would take this opportunity to review the fast changing technology and PC landscape.

Earlier this year, the Personal Computer (PC) as we know it celebrated its 25 year.  In August 1981, IBM released its new computer, dubbed the IBM PC. ‘PC’ stood for ‘personal computer’ making the company responsible for popularizing the ‘PC’

The earlier PC running Microsoft-DOS (MS-DOS) were humble in origins compared to today’s PCs with a 4.77 MHz Intel 8088 microprocessor with 16K of memory, one or two 160K floppy disk drives and an optional color monitor.

What made the IBM PC different from other vendors at the time was that it was built from off the shelf parts and had an open architecture which still prevails today.

The first IBM PCs told for around $1,500, which is equivalent to around $4,000. Compare this today, where we can pick up laptops anyway from around $500 to $1,000. Indeed the PC industry has come along way from MS-Doc to the early release of Windows 3.1, through to Windows 95 to XP.

In about a week from now, Microsoft will be launching its much anticipated new operating system, Vista.

Initially, Vista, will only ship to businesses with a consumer offering expected early next year.  The unlike previous versions of Windows, Vista will be available in a number of flavors, all the way from a basic package called Windows Home Basic  ($199) to Windows Vista Ultimate $399) which adds every available feature, including media Center, tablet input, advanced backup and a series of exclusive extras.

Vista also features Internet Explorer 7, Windows Media Player 11, Windows Defender, and Windows Desktop Search. While each new operating system from Windows has introduced new features, Vista is not expected to break new ground. Many of the features in Vista are already in XP. If you regularly download patches from Microsoft security center, you will already have one most secure PC around

Therefore this begs the question, is it a necessary or compelling upgrade. I will review this in the next series of blogposts; all the way from what you need if you are going to switch from Windows XP and what kind of system you need, and how to install it