Yesterday was a big "Patch Tuesday" with 17 new security patches released by Microsoft, 9 of which were listed as "critical". The second Tuesday of each month is known as "Patch Tuesday", and this is when Microsoft regularly releases free security upgrades. As vulnerabilities are discovered, upgrades are made to the software to prevent hackers from exploiting the vulnerabilities. Full details on the April 12, 2011 Microsoft Security Bulletin can be found on the Microsoft web site.
Fifteen of the bulletins address vulnerabilities that allow attackers to remotely execute code - Very Serious!
In Massachusetts, as of March 1, 2010 it's required by law for all computers containing personal information on Massachusetts residents to have up to date security patches.
Recommendation: We strongly advise clients to participate in a managed service program that involves full testing of all updates before installation, with tracking and reporting. For clients who don't choose this option, then enabling automatic updates through Microsoft Windows is advised. In Windows 7, open Windows Update by clicking the Start button , click All Programs, and then click Windows Update. Note that updates can also be manually installed.