On Monday, Microsoft issued an Out of Band Security Update for Windows 7, Vista, and Windows XP (SP3) to stop the spread of a vicious new worm taking advantage of a vulnerability in Windows LNK (shortcut) files. The vulnerability is already being used by malware. The update (KB2286198) will automatically install if you have Windows Update enabled. If you don't currently use Automatic Updates, you need to install the patch without delay.

Yesterday, Microsoft took the unusual step of releasing two emergency updates, one for a Critical Vulnerability in Internet Explorer and another for Visual Studio. It is rare for Microsoft to deviate from it's monthly patch schedule, which should give you an idea of how important this particular update is. Normally, patches are issued once a month (on the second Tuesday).

Just as it's important to visit Windows Updates on a regular basis or have Automatic Updates enabled, it's also necessary to run the latest versions of software to ensure that your PC is protected. Of particular importance is always running the latest versions of Flash Player, Java, Adobe Reader and QuickTime. They have all experienced vulnerabilities in the past that have allowed PCs to become compromised while running the vulnerable versions.

Microsoft has just patched a Critical Vulnerability in Internet Explorer. It is important that users apply the patch immediately. This vulnerability is being actively exploited to download a password stealing Trojan onto PCs as unsuspecting users browse compromised websites with Internet Explorer.

Go to Windows Update today to install the update.

Microsoft has a released a Critical Security update for Windows XP, Windows 2000, and Windows Server 2003 (for Windows Vista and Server 2008, it's rated Important). Microsoft is advising Windows users to apply the update immediately.

The vulnerability can allow a malicious remote user to gain access to your computer.

Windows XP SP3 is currently available via Windows Update and Windows Download. It is expected to become available via Automatic Updates between June and July. SP3 includes more than 1,000 fixes. An update of that magnitude should only be done after creating a backup of your computer, just in case something goes wrong. I successfully upgraded all four of our PCs…